82_FR_14170 82 FR 14119 - Special Conditions: Avionics Design Services Ltd., Textron Model 550/S550/560/560XL Airplanes; Rechargeable Lithium Batteries and Battery Systems

82 FR 14119 - Special Conditions: Avionics Design Services Ltd., Textron Model 550/S550/560/560XL Airplanes; Rechargeable Lithium Batteries and Battery Systems

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 82, Issue 51 (March 17, 2017)

Page Range14119-14122
FR Document2017-05334

These special conditions are issued for the Textron Model 550/ S550/560/560XL airplanes. These airplanes, as modified by Avionics Design Services Ltd., will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for transport-category airplanes. This design feature is rechargeable lithium batteries and battery systems installed in the airplanes. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.

Federal Register, Volume 82 Issue 51 (Friday, March 17, 2017)
[Federal Register Volume 82, Number 51 (Friday, March 17, 2017)]
[Rules and Regulations]
[Pages 14119-14122]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2017-05334]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 25

[Docket No. FAA-2016-9401; Special Conditions No. 25-651-SC]


Special Conditions: Avionics Design Services Ltd., Textron Model 
550/S550/560/560XL Airplanes; Rechargeable Lithium Batteries and 
Battery Systems

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final special conditions; request for comments.

-----------------------------------------------------------------------

SUMMARY: These special conditions are issued for the Textron Model 550/
S550/560/560XL airplanes. These airplanes, as modified by Avionics 
Design Services Ltd., will have a novel or unusual design feature when 
compared to the state of technology envisioned in the airworthiness 
standards for transport-category airplanes. This design feature is 
rechargeable lithium batteries and battery systems installed in the 
airplanes. The applicable airworthiness regulations do not contain 
adequate or appropriate safety standards for this design feature. These 
special conditions contain the additional safety standards that the 
Administrator considers necessary to establish a level of safety 
equivalent to that established by the existing airworthiness standards.

DATES: This action is effective on Textron on March 17, 2017. We must 
receive your comments by May 1, 2017.

ADDRESSES: Send comments identified by docket number FAA-2016-9401 
using any of the following methods:
    [squ] Federal eRegulations Portal: Go to http://www.regulations.gov/and follow

[[Page 14120]]

the online instructions for sending your comments electronically.
    [squ] Mail: Send comments to Docket Operations, M-30, U.S. 
Department of Transportation (DOT), 1200 New Jersey Avenue SE., Room 
W12-140, West Building Ground Floor, Washington, DC, 20590-0001.
    [squ] Hand Delivery or Courier: Take comments to Docket Operations 
in Room W12-140 of the West Building Ground Floor at 1200 New Jersey 
Avenue SE., Washington, DC, between 9 a.m. and 5 p.m., Monday through 
Friday, except Federal holidays.
    [squ] Fax: Fax comments to Docket Operations at 202-493-2251.
    Privacy: The FAA will post all comments it receives, without 
change, to http://www.regulations.gov/, including any personal 
information the commenter provides. Using the search function of the 
docket Web site, anyone can find and read the electronic form of all 
comments received into any FAA docket, including the name of the 
individual sending the comment (or signing the comment for an 
association, business, labor union, etc.). DOT's complete Privacy Act 
Statement can be found in the Federal Register published on April 11, 
2000 (65 FR 19477-19478), as well as at http://DocketsInfo.dot.gov/.
    Docket: Background documents or comments received may be read at 
http://www.regulations.gov/ at any time. Follow the online instructions 
for accessing the docket or go to Docket Operations in Room W12-140 of 
the West Building Ground Floor at 1200 New Jersey Avenue SE., 
Washington, DC, between 9 a.m. and 5 p.m., Monday through Friday, 
except Federal holidays.

FOR FURTHER INFORMATION CONTACT: Nazih Khaouly, FAA, Airplane and 
Flightcrew Interface Branch, ANM-111, Transport Airplane Directorate, 
Aircraft Certification Service, 1601 Lind Avenue SW., Renton, 
Washington 98057-3356; telephone 425-227-2432; facsimile 425-227-1320.

SUPPLEMENTARY INFORMATION: 
    The substance of these special conditions has been subject to the 
notice and comment period in several prior instances and has been 
derived without substantive change from those previously issued. It is 
unlikely that prior public comment would result in a significant change 
from the substance contained herein. Therefore, because a delay would 
significantly affect the certification of the airplane, the FAA has 
determined that prior public notice and comment are unnecessary and 
impracticable, and good cause exists for making these special 
conditions effective upon publication in the Federal Register.

Comments Invited

    We invite interested people to take part in this rulemaking by 
sending written comments, data, or views. The most helpful comments 
reference a specific portion of the special conditions, explain the 
reason for any recommended change, and include supporting data.
    We will consider all comments we receive by the closing date for 
comments. We may change these special conditions based on the comments 
we receive.

Background

    On July 9, 2015, Avionics Design Services Ltd. applied for a 
supplemental type certificate for rechargeable lithium batteries and 
battery systems installed in Textron Model 550/S550/560/560XL 
airplanes. These airplanes are twin-engine, transport-category business 
jets with a maximum capacity of 8 (Models 550 and 560) or 9 (Models 
S550 and 560XL) passengers, and maximum takeoff weights of 15,100 lbs. 
(Models 550 and S550), 16,300 lbs. (Model 560), and 20,200 lbs. (Model 
560XL).

Type Certification Basis

    Under the provisions of Title 14, Code of Federal Regulations (14 
CFR) 21.101, Avionics Design Services Ltd. must show that the Textron 
Model 550/S550/560/560XL airplanes, as changed, continue to meet the 
applicable provisions of the regulations listed in Type Certificate No. 
A22CE, or the applicable regulations in effect on the date of 
application for the change, except for earlier amendments as agreed 
upon by the FAA.
    If the Administrator finds that the applicable airworthiness 
regulations (i.e., 14 CFR part 25) do not contain adequate or 
appropriate safety standards for the Textron Model 550/S550/560/560XL 
airplanes, as modified by Avionics Design Services Ltd., because of a 
novel or unusual design feature, special conditions are prescribed 
under the provisions of Sec.  21.16.
    Special conditions are initially applicable to the model for which 
they are issued. Should the applicant apply for a supplemental type 
certificate to modify any other model included on the same type 
certificate to incorporate the same novel or unusual design feature, 
these special conditions would also apply to the other model under 
Sec.  21.101.
    In addition to the applicable airworthiness regulations and special 
conditions, the Model 550/S550/560/560XL airplanes, as modified by 
Avionics Design Services Ltd., must comply with the fuel-vent and 
exhaust-emission requirements of 14 CFR part 34, and the noise-
certification requirements of 14 CFR part 36.
    The FAA issues special conditions, as defined in 14 CFR 11.19, in 
accordance with Sec.  11.38, and they become part of the type 
certification basis under Sec.  21.101.

Novel or Unusual Design Features

    The Textron Model 550/S550/560/560XL airplanes, as modified by 
Avionics Design Services Ltd., will incorporate the following novel or 
unusual design feature:
    Installed rechargeable lithium batteries and battery systems.
    Rechargeable lithium batteries are a novel or unusual design 
feature in transport-category airplanes. This type of battery has 
certain failure, operational, and maintenance characteristics that 
differ significantly from those of the nickel-cadmium and lead-acid 
rechargeable batteries currently approved for installation on 
transport-category airplanes.

Discussion

    Rechargeable lithium batteries are novel and unusual with respect 
to the state of technology considered when these requirements were 
codified. These batteries introduce higher energy levels into airplane 
systems through new chemical compositions in various battery-cell sizes 
and construction. Interconnection of these cells in battery packs 
introduces failure modes that require unique design considerations, 
such as provisions for thermal management.
    Recent events involving rechargeable and non-rechargeable lithium 
batteries prompted the FAA to initiate a broad evaluation of these 
energy-storage technologies. In January 2013, two independent events 
involving rechargeable lithium-ion batteries demonstrated unanticipated 
failure modes. These events are described in a National Transportation 
Safety Board letter to the FAA, dated May 22, 2014, which is available 
at: http://www.ntsb.gov/doclib/recletters/2014/A-14-032-036.pdf.
    On July 12, 2013, an event involving a non-rechargeable lithium 
battery in an emergency-locator transmitter installation demonstrated 
unanticipated failure modes. This event is described in Air Accident 
Investigations Branch Bulletin S5/2013, available at: http://www.aaib.gov.uk/cms_resources.cfm?file=/S5-2013%20ET-AOP.pdf.

[[Page 14121]]

    Some other known uses of rechargeable and non-rechargeable lithium 
batteries on airplanes include:
    [squ] Flight deck and avionics systems such as displays, global-
positioning systems, cockpit voice recorders, flight-data recorders, 
underwater-locator beacons, navigation computers, integrated avionics 
computers, satellite network/communication systems, communication-
management units, and remote-monitor electronic line replaceable units 
(LRU);
    [squ] Cabin safety, entertainment and communications equipment 
including life rafts, escape slides, seatbelt air bags, cabin-
management systems, Ethernet switches, routers and media servers, 
wireless systems, internet and in-flight entertainment systems, 
satellite televisions, and remote controls and handsets; and,
    [squ] Systems in cargo areas including door controls, sensors, 
video surveillance equipment and security systems.
    Some known potential hazards and failure modes associated with 
rechargeable lithium batteries are:
    [squ] Internal failures. In general, these batteries are 
significantly more susceptible to internal failures that can result in 
self-sustaining increases in temperature and pressure (i.e., thermal 
runaway) than their nickel-cadmium or lead-acid counterparts. The 
metallic lithium can ignite, resulting in a self-sustaining fire or 
explosion.
    [squ] Fast or imbalanced discharging. Fast discharging, or an 
imbalanced discharge of one cell of a multi-cell battery, may create an 
overheating condition that results in an uncontrollable venting 
condition which, in turn, leads to a thermal event or an explosion.
    [squ] Flammability. Unlike nickel-cadmium and lead-acid batteries, 
these batteries use higher energy and current in an electrochemical 
system that can be configured to maximize energy storage of lithium, 
and use liquid electrolytes that can be extremely flammable. The 
electrolyte, as well as the electrodes, can serve as a source of fuel 
for an external fire if the battery casing is breached.
    These special conditions contain the additional safety standards 
that the Administrator considers necessary to establish a level of 
safety equivalent to that established by the existing airworthiness 
standards.

Applicability

    As discussed above, these special conditions are applicable to the 
Textron Model 550/S550/560/560XL airplanes as modified by Avionics 
Design Services Ltd. Should Avionics Design Services Ltd. apply at a 
later date for a supplemental type certificate to modify any other 
model included on Type Certificate No. A22CE to incorporate the same 
novel or unusual design feature, these special conditions would apply 
to that model as well.

Conclusion

    This action affects only a certain novel or unusual design feature 
on one model series of airplanes. It is not a rule of general 
applicability and affects only the applicant who applied to the FAA for 
approval of these features on the airplane.
    The substance of these special conditions has been subjected to the 
notice and comment period in several prior instances and has been 
derived without substantive change from those previously issued. It is 
unlikely that prior public comment would result in a significant change 
from the substance contained herein. Therefore, because a delay would 
significantly affect the certification of the airplane, the FAA has 
determined that prior public notice and comment are unnecessary and 
impracticable, and good cause exists for adopting these special 
conditions upon publication in the Federal Register. The FAA is 
requesting comments to allow interested persons to submit views that 
may not have been submitted in response to the prior opportunities for 
comment described above.

List of Subjects in 14 CFR Part 25

    Aircraft, Aviation safety, Reporting and recordkeeping 
requirements.

    The authority citation for these special conditions is as follows:

    Authority: 49 U.S.C. 106(g), 40113, 44701, 44702, 44704.

The Special Conditions

    Accordingly, pursuant to the authority delegated to me by the 
Administrator, the following special conditions are issued as part of 
the type certification basis for Textron Model 550/S550/560/560XL 
airplanes modified by Avionics Design Services Ltd.
    Each rechargeable lithium battery installation must:
    1. Be designed so that safe cell temperatures and pressures are 
maintained under all foreseeable operating conditions to preclude fire 
and explosion.
    2. Be designed to preclude the occurrence of self-sustaining, 
uncontrolled increases in temperature or pressure.
    3. Not emit explosive or toxic gases in normal operation, or as a 
result of its failure, that may accumulate in hazardous quantities 
within the airplane.
    4. Meet the requirements of Title 14, Code of Federal Regulations 
25.863.
    5. Not damage surrounding structure or adjacent systems, equipment, 
or electrical wiring from corrosive fluids or gases that may escape.
    6. Have provisions to prevent any hazardous effect on airplane 
structure or systems caused by the maximum amount of heat the 
installation can generate due to any failure of it or its individual 
cells.
    7. Be capable of automatically controlling the charge rate of each 
cell to prevent cell imbalance, back charging, overcharging, 
overheating, and uncontrollable temperature and pressure.
    8. Have a means to be automatically disconnected from its charging 
source in the event of an over-temperature condition, cell failure, or 
battery failure.
    9. Have a failure sensing and warning system to alert the 
flightcrew if the installation's failure affects safe operation of the 
airplane.
    10. If its function is required for safe operation of the airplane, 
the installment must have a monitoring and warning feature that alerts 
the flightcrew when its charge state falls below acceptable levels.

    Note 1: A battery system consists of the battery, battery 
charger, and any protective, monitoring, and alerting circuitry or 
hardware inside or outside of the battery. It also includes vents 
(where necessary) and packaging. For the purpose of these special 
conditions, a battery and battery system are referred to as a 
battery.


    Note 2: These special conditions apply to all rechargeable 
lithium battery installations in lieu of Title 14, Code of Federal 
Regulations 25.1353(c)(1) through (c)(4) at Amendment 25-42. Section 
25.1353(c)(1) through (c)(4) at Amendment 25-42 remains in effect 
for other battery installations.


    Note 3: Section 25.863 is applicable to areas of the airplane 
that could be exposed to flammable fluid leakage from airplane 
systems. Rechargeable lithium batteries contain electrolyte that is 
a flammable fluid. The FAA includes special condition 4 to make it 
clear to applicants that the flammable-fluid fire-protection 
requirements of Sec.  25.863 apply to rechargeable lithium battery 
installations.


    Note 4: Special conditions 7 and 8 require rechargeable lithium 
batteries to have ``automatic'' means, for charge rate and 
disconnect, due to the fast-acting nature of lithium battery 
chemical reactions. Manual intervention would not be timely or 
effective in mitigating the hazards associated with these batteries.



[[Page 14122]]


    Issued in Renton, Washington, on February 23, 2017.
Michael Kaszycki,
Assistant Manager, Transport Airplane Directorate, Aircraft 
Certification Service.
[FR Doc. 2017-05334 Filed 3-16-17; 8:45 am]
 BILLING CODE 4910-13-P



                                                                    Federal Register / Vol. 82, No. 51 / Friday, March 17, 2017 / Rules and Regulations                                               14119

                                                another model incorporating the same                    load factor that is automatically applied             would require airplane flight-manual
                                                novel or unusual design feature, these                  by the system with the pilot’s pitch                  instructions to indicate reduced
                                                special conditions would apply to that                  control neutral. Power, as specified in               maximum operating speeds, as
                                                model as well.                                          § 25.175(b)(1)(iv), is assumed until                  described in special condition 4, above.
                                                                                                        recovery is initiated, at which time                  In addition, the flight-deck display of
                                                Conclusion
                                                                                                        power reduction and the use of pilot-                 the reduced operating speeds, as well as
                                                  This action affects only certain novel                controlled drag devices may be used.                  the overspeed warning for exceeding
                                                or unusual design features on one model                    b. From a speed below VC/MC, with                  those speeds, must be equivalent to that
                                                of airplane. It is not a rule of general                power to maintain stabilized level flight             of the normal airplane with the high-
                                                applicability.                                          at this speed, the airplane is upset so as            speed-protection system operative. Also,
                                                  The substance of these special                        to accelerate through VC/MC at a flight               the applicant must show that no
                                                conditions has been subjected to the                    path 15 degrees below the initial path                additional hazards are introduced with
                                                notice and comment period in several                    (or at the steepest nose-down attitude                the high-speed-protection system
                                                prior instances and has been derived                    that the system will permit with full                 inoperative.
                                                without substantive change from those                   control authority if less than 15                        Issued in Renton, Washington, on February
                                                previously issued. It is unlikely that                  degrees). The pilot’s controls may be in              7, 2017.
                                                prior public comment would result in a                  the neutral position after reaching VC/               Michael Kaszycki,
                                                significant change from the substance                   MC and before recovery is initiated.                  Assistant Manager, Transport Airplane
                                                contained herein. Therefore, because a                  Recovery may be initiated three seconds               Directorate, Aircraft Certification Service.
                                                delay would significantly affect the                    after operation of the high-speed                     [FR Doc. 2017–05329 Filed 3–16–17; 8:45 am]
                                                certification of the airplane, the FAA                  warning system by application of a load
                                                                                                                                                              BILLING CODE 4910–13–P
                                                has determined that prior public notice                 of 1.5 g (0.5 g acceleration increment),
                                                and comment are unnecessary and                         or such greater load factor that is
                                                impracticable, and good cause exists for                automatically applied by the system                   DEPARTMENT OF TRANSPORTATION
                                                adopting these special conditions upon                  with the pilot’s pitch control neutral.
                                                publication in the Federal Register. The                Power may be reduced simultaneously.                  Federal Aviation Administration
                                                FAA is requesting comments to allow                     All other means of decelerating the
                                                interested persons to submit views that                 airplane, the use of which is authorized              14 CFR Part 25
                                                may not have been submitted in                          up to the highest speed reached in the
                                                                                                        maneuver, may be used. The interval                   [Docket No. FAA–2016–9401; Special
                                                response to the prior opportunities for
                                                                                                                                                              Conditions No. 25–651–SC]
                                                comment described above.                                between successive pilot actions must
                                                                                                        not be less than one second.                          Special Conditions: Avionics Design
                                                List of Subjects in 14 CFR Part 25                         2. The applicant must also                         Services Ltd., Textron Model 550/S550/
                                                  Aircraft, Aviation safety, Reporting                  demonstrate that the speed margin,                    560/560XL Airplanes; Rechargeable
                                                and recordkeeping requirements.                         established as above, will not be                     Lithium Batteries and Battery Systems
                                                  The authority citation for these                      exceeded in inadvertent or gust-induced
                                                special conditions is as follows:                       upsets resulting in initiation of the dive            AGENCY:  Federal Aviation
                                                  Authority: 49 U.S.C. 106(g), 40113, 44701,            from non-symmetric attitudes, unless                  Administration (FAA), DOT.
                                                44702, 44704.                                           the airplane is protected, by the flight-             ACTION: Final special conditions; request
                                                                                                        control laws, from getting into non-                  for comments.
                                                The Special Conditions                                  symmetric upset conditions. The upset
                                                   Accordingly, pursuant to the                         maneuvers described in Advisory                       SUMMARY:    These special conditions are
                                                authority delegated to me by the                        Circular 25–7C, ‘‘Flight Test Guide for               issued for the Textron Model 550/S550/
                                                Administrator, the following special                    Certification of Transport Category                   560/560XL airplanes. These airplanes,
                                                conditions are issued as part of the type               Airplanes,’’ section 8, paragraph 32,                 as modified by Avionics Design Services
                                                certification basis for Embraer Model                   sub-paragraphs c(3)(a) and (b), may be                Ltd., will have a novel or unusual
                                                ERJ 190–300 airplanes.                                  used to comply with this requirement.                 design feature when compared to the
                                                   1. In lieu of compliance with                           3. The probability of any failure of the           state of technology envisioned in the
                                                § 25.335(b)(1), if the flight-control                   high-speed-protection system that                     airworthiness standards for transport-
                                                system includes functions that act                      would result in an airspeed exceeding                 category airplanes. This design feature
                                                automatically to initiate recovery before               those determined by special conditions                is rechargeable lithium batteries and
                                                the end of the 20-second period                         1 and 2, above, must be less than 10¥5                battery systems installed in the
                                                specified in § 25.335(b)(1), VD/MD must                 per flight hour.                                      airplanes. The applicable airworthiness
                                                be determined from the greater of the                      4. Failures of the system must be                  regulations do not contain adequate or
                                                speeds resulting from special conditions                annunciated to the pilots. Airplane                   appropriate safety standards for this
                                                1(a) and 1(b), below. The speed increase                flight-manual instructions must be                    design feature. These special conditions
                                                occurring in these maneuvers may be                     provided that reduce the maximum                      contain the additional safety standards
                                                calculated if reliable or conservative                  operating speeds, VMO/MMO. With the                   that the Administrator considers
                                                aerodynamic data are used.                              system failed, the operating speed must               necessary to establish a level of safety
                                                   a. From an initial condition of                      be reduced to a value that maintains a                equivalent to that established by the
                                                stabilized flight at VC/MC, the airplane                speed margin between VMO/MMO and                      existing airworthiness standards.
                                                is upset so as to take up a new flight                  VD/MD, and that is consistent with                    DATES: This action is effective on
mstockstill on DSK3G9T082PROD with RULES




                                                path 7.5 degrees below the initial path.                showing compliance with § 25.335(b)                   Textron on March 17, 2017. We must
                                                Control application, up to full authority,              without the benefit of the high-speed-                receive your comments by May 1, 2017.
                                                is made to try to maintain this new                     protection system.                                    ADDRESSES: Send comments identified
                                                flight path. Twenty seconds after                          5. Dispatch of the airplane with the               by docket number FAA–2016–9401
                                                initiating the upset, manual recovery is                high-speed-protection system                          using any of the following methods:
                                                made at a load factor of 1.5 g (0.5 g                   inoperative could be allowed under an                    b Federal eRegulations Portal: Go to
                                                acceleration increment), or such greater                approved minimum equipment list that                  http://www.regulations.gov/and follow


                                           VerDate Sep<11>2014   19:31 Mar 16, 2017   Jkt 241001   PO 00000   Frm 00009   Fmt 4700   Sfmt 4700   E:\FR\FM\17MRR1.SGM   17MRR1


                                                14120               Federal Register / Vol. 82, No. 51 / Friday, March 17, 2017 / Rules and Regulations

                                                the online instructions for sending your                effective upon publication in the                     Avionics Design Services Ltd., must
                                                comments electronically.                                Federal Register.                                     comply with the fuel-vent and exhaust-
                                                   b Mail: Send comments to Docket                                                                            emission requirements of 14 CFR part
                                                                                                        Comments Invited
                                                Operations, M–30, U.S. Department of                                                                          34, and the noise-certification
                                                Transportation (DOT), 1200 New Jersey                     We invite interested people to take                 requirements of 14 CFR part 36.
                                                Avenue SE., Room W12–140, West                          part in this rulemaking by sending                      The FAA issues special conditions, as
                                                Building Ground Floor, Washington,                      written comments, data, or views. The                 defined in 14 CFR 11.19, in accordance
                                                DC, 20590–0001.                                         most helpful comments reference a                     with § 11.38, and they become part of
                                                   b Hand Delivery or Courier: Take                     specific portion of the special                       the type certification basis under
                                                comments to Docket Operations in                        conditions, explain the reason for any                § 21.101.
                                                Room W12–140 of the West Building                       recommended change, and include
                                                Ground Floor at 1200 New Jersey                         supporting data.                                      Novel or Unusual Design Features
                                                Avenue SE., Washington, DC, between 9                     We will consider all comments we
                                                                                                                                                                 The Textron Model 550/S550/560/
                                                a.m. and 5 p.m., Monday through                         receive by the closing date for
                                                                                                                                                              560XL airplanes, as modified by
                                                Friday, except Federal holidays.                        comments. We may change these special
                                                                                                                                                              Avionics Design Services Ltd., will
                                                   b Fax: Fax comments to Docket                        conditions based on the comments we
                                                                                                                                                              incorporate the following novel or
                                                Operations at 202–493–2251.                             receive.
                                                                                                                                                              unusual design feature:
                                                   Privacy: The FAA will post all                       Background
                                                comments it receives, without change,                                                                            Installed rechargeable lithium
                                                to http://www.regulations.gov/,                           On July 9, 2015, Avionics Design                    batteries and battery systems.
                                                including any personal information the                  Services Ltd. applied for a supplemental                 Rechargeable lithium batteries are a
                                                commenter provides. Using the search                    type certificate for rechargeable lithium             novel or unusual design feature in
                                                function of the docket Web site, anyone                 batteries and battery systems installed               transport-category airplanes. This type
                                                can find and read the electronic form of                in Textron Model 550/S550/560/560XL                   of battery has certain failure,
                                                all comments received into any FAA                      airplanes. These airplanes are twin-                  operational, and maintenance
                                                docket, including the name of the                       engine, transport-category business jets              characteristics that differ significantly
                                                individual sending the comment (or                      with a maximum capacity of 8 (Models                  from those of the nickel-cadmium and
                                                signing the comment for an association,                 550 and 560) or 9 (Models S550 and                    lead-acid rechargeable batteries
                                                business, labor union, etc.). DOT’s                     560XL) passengers, and maximum                        currently approved for installation on
                                                complete Privacy Act Statement can be                   takeoff weights of 15,100 lbs. (Models                transport-category airplanes.
                                                found in the Federal Register published                 550 and S550), 16,300 lbs. (Model 560),
                                                                                                        and 20,200 lbs. (Model 560XL).                        Discussion
                                                on April 11, 2000 (65 FR 19477–19478),
                                                as well as at http://DocketsInfo.                       Type Certification Basis                                 Rechargeable lithium batteries are
                                                dot.gov/.                                                                                                     novel and unusual with respect to the
                                                                                                           Under the provisions of Title 14, Code             state of technology considered when
                                                   Docket: Background documents or
                                                                                                        of Federal Regulations (14 CFR) 21.101,               these requirements were codified. These
                                                comments received may be read at
                                                                                                        Avionics Design Services Ltd. must                    batteries introduce higher energy levels
                                                http://www.regulations.gov/ at any time.
                                                                                                        show that the Textron Model 550/S550/                 into airplane systems through new
                                                Follow the online instructions for
                                                                                                        560/560XL airplanes, as changed,                      chemical compositions in various
                                                accessing the docket or go to Docket
                                                                                                        continue to meet the applicable                       battery-cell sizes and construction.
                                                Operations in Room W12–140 of the
                                                                                                        provisions of the regulations listed in               Interconnection of these cells in battery
                                                West Building Ground Floor at 1200
                                                                                                        Type Certificate No. A22CE, or the                    packs introduces failure modes that
                                                New Jersey Avenue SE., Washington,
                                                                                                        applicable regulations in effect on the               require unique design considerations,
                                                DC, between 9 a.m. and 5 p.m., Monday
                                                                                                        date of application for the change,                   such as provisions for thermal
                                                through Friday, except Federal holidays.
                                                                                                        except for earlier amendments as agreed               management.
                                                FOR FURTHER INFORMATION CONTACT:                        upon by the FAA.
                                                Nazih Khaouly, FAA, Airplane and                           If the Administrator finds that the                   Recent events involving rechargeable
                                                Flightcrew Interface Branch, ANM–111,                   applicable airworthiness regulations                  and non-rechargeable lithium batteries
                                                Transport Airplane Directorate, Aircraft                (i.e., 14 CFR part 25) do not contain                 prompted the FAA to initiate a broad
                                                Certification Service, 1601 Lind Avenue                 adequate or appropriate safety standards              evaluation of these energy-storage
                                                SW., Renton, Washington 98057–3356;                     for the Textron Model 550/S550/560/                   technologies. In January 2013, two
                                                telephone 425–227–2432; facsimile                       560XL airplanes, as modified by                       independent events involving
                                                425–227–1320.                                           Avionics Design Services Ltd., because                rechargeable lithium-ion batteries
                                                SUPPLEMENTARY INFORMATION:                              of a novel or unusual design feature,                 demonstrated unanticipated failure
                                                  The substance of these special                        special conditions are prescribed under               modes. These events are described in a
                                                conditions has been subject to the notice               the provisions of § 21.16.                            National Transportation Safety Board
                                                and comment period in several prior                        Special conditions are initially                   letter to the FAA, dated May 22, 2014,
                                                instances and has been derived without                  applicable to the model for which they                which is available at: http://www.ntsb.
                                                substantive change from those                           are issued. Should the applicant apply                gov/doclib/recletters/2014/A-14-032-
                                                previously issued. It is unlikely that                  for a supplemental type certificate to                036.pdf.
                                                prior public comment would result in a                  modify any other model included on the                   On July 12, 2013, an event involving
                                                significant change from the substance                   same type certificate to incorporate the              a non-rechargeable lithium battery in an
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                                                contained herein. Therefore, because a                  same novel or unusual design feature,                 emergency-locator transmitter
                                                delay would significantly affect the                    these special conditions would also                   installation demonstrated unanticipated
                                                certification of the airplane, the FAA                  apply to the other model under § 21.101.              failure modes. This event is described in
                                                has determined that prior public notice                    In addition to the applicable                      Air Accident Investigations Branch
                                                and comment are unnecessary and                         airworthiness regulations and special                 Bulletin S5/2013, available at: http://
                                                impracticable, and good cause exists for                conditions, the Model 550/S550/560/                   www.aaib.gov.uk/cms_resources.cfm
                                                making these special conditions                         560XL airplanes, as modified by                       ?file=/S5-2013%20ET-AOP.pdf.


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                                                                    Federal Register / Vol. 82, No. 51 / Friday, March 17, 2017 / Rules and Regulations                                             14121

                                                   Some other known uses of                             Ltd. apply at a later date for a                      hazardous quantities within the
                                                rechargeable and non-rechargeable                       supplemental type certificate to modify               airplane.
                                                lithium batteries on airplanes include:                 any other model included on Type                         4. Meet the requirements of Title 14,
                                                   b Flight deck and avionics systems                   Certificate No. A22CE to incorporate the              Code of Federal Regulations 25.863.
                                                such as displays, global-positioning                    same novel or unusual design feature,
                                                systems, cockpit voice recorders, flight-               these special conditions would apply to                  5. Not damage surrounding structure
                                                data recorders, underwater-locator                      that model as well.                                   or adjacent systems, equipment, or
                                                beacons, navigation computers,                                                                                electrical wiring from corrosive fluids or
                                                                                                        Conclusion                                            gases that may escape.
                                                integrated avionics computers, satellite
                                                network/communication systems,                            This action affects only a certain                     6. Have provisions to prevent any
                                                communication-management units, and                     novel or unusual design feature on one                hazardous effect on airplane structure or
                                                remote-monitor electronic line                          model series of airplanes. It is not a rule           systems caused by the maximum
                                                replaceable units (LRU);                                of general applicability and affects only             amount of heat the installation can
                                                   b Cabin safety, entertainment and                    the applicant who applied to the FAA                  generate due to any failure of it or its
                                                communications equipment including                      for approval of these features on the                 individual cells.
                                                life rafts, escape slides, seatbelt air bags,           airplane.                                                7. Be capable of automatically
                                                cabin-management systems, Ethernet                        The substance of these special                      controlling the charge rate of each cell
                                                switches, routers and media servers,                    conditions has been subjected to the                  to prevent cell imbalance, back
                                                wireless systems, internet and in-flight                notice and comment period in several                  charging, overcharging, overheating, and
                                                entertainment systems, satellite                        prior instances and has been derived                  uncontrollable temperature and
                                                televisions, and remote controls and                    without substantive change from those                 pressure.
                                                handsets; and,                                          previously issued. It is unlikely that
                                                                                                                                                                 8. Have a means to be automatically
                                                   b Systems in cargo areas including                   prior public comment would result in a
                                                                                                        significant change from the substance                 disconnected from its charging source in
                                                door controls, sensors, video
                                                                                                        contained herein. Therefore, because a                the event of an over-temperature
                                                surveillance equipment and security
                                                                                                        delay would significantly affect the                  condition, cell failure, or battery failure.
                                                systems.
                                                   Some known potential hazards and                     certification of the airplane, the FAA                   9. Have a failure sensing and warning
                                                failure modes associated with                           has determined that prior public notice               system to alert the flightcrew if the
                                                rechargeable lithium batteries are:                     and comment are unnecessary and                       installation’s failure affects safe
                                                   b Internal failures. In general, these               impracticable, and good cause exists for              operation of the airplane.
                                                batteries are significantly more                        adopting these special conditions upon                   10. If its function is required for safe
                                                susceptible to internal failures that can               publication in the Federal Register. The              operation of the airplane, the
                                                result in self-sustaining increases in                  FAA is requesting comments to allow                   installment must have a monitoring and
                                                temperature and pressure (i.e., thermal                 interested persons to submit views that               warning feature that alerts the
                                                runaway) than their nickel-cadmium or                   may not have been submitted in                        flightcrew when its charge state falls
                                                lead-acid counterparts. The metallic                    response to the prior opportunities for               below acceptable levels.
                                                lithium can ignite, resulting in a self-                comment described above.                                Note 1: A battery system consists of the
                                                sustaining fire or explosion.                                                                                 battery, battery charger, and any protective,
                                                   b Fast or imbalanced discharging.                    List of Subjects in 14 CFR Part 25
                                                                                                                                                              monitoring, and alerting circuitry or
                                                Fast discharging, or an imbalanced                        Aircraft, Aviation safety, Reporting                hardware inside or outside of the battery. It
                                                discharge of one cell of a multi-cell                   and recordkeeping requirements.                       also includes vents (where necessary) and
                                                battery, may create an overheating                        The authority citation for these                    packaging. For the purpose of these special
                                                condition that results in an                            special conditions is as follows:                     conditions, a battery and battery system are
                                                uncontrollable venting condition which,                                                                       referred to as a battery.
                                                                                                          Authority: 49 U.S.C. 106(g), 40113, 44701,
                                                in turn, leads to a thermal event or an                 44702, 44704.                                            Note 2: These special conditions apply to
                                                explosion.                                                                                                    all rechargeable lithium battery installations
                                                   b Flammability. Unlike nickel-                       The Special Conditions
                                                                                                                                                              in lieu of Title 14, Code of Federal
                                                cadmium and lead-acid batteries, these                     Accordingly, pursuant to the                       Regulations 25.1353(c)(1) through (c)(4) at
                                                batteries use higher energy and current                 authority delegated to me by the                      Amendment 25–42. Section 25.1353(c)(1)
                                                in an electrochemical system that can be                Administrator, the following special                  through (c)(4) at Amendment 25–42 remains
                                                configured to maximize energy storage                   conditions are issued as part of the type             in effect for other battery installations.
                                                of lithium, and use liquid electrolytes                 certification basis for Textron Model
                                                that can be extremely flammable. The                                                                             Note 3: Section 25.863 is applicable to
                                                                                                        550/S550/560/560XL airplanes
                                                                                                                                                              areas of the airplane that could be exposed
                                                electrolyte, as well as the electrodes, can             modified by Avionics Design Services                  to flammable fluid leakage from airplane
                                                serve as a source of fuel for an external               Ltd.                                                  systems. Rechargeable lithium batteries
                                                fire if the battery casing is breached.                    Each rechargeable lithium battery                  contain electrolyte that is a flammable fluid.
                                                   These special conditions contain the                 installation must:                                    The FAA includes special condition 4 to
                                                additional safety standards that the                       1. Be designed so that safe cell                   make it clear to applicants that the
                                                Administrator considers necessary to                    temperatures and pressures are                        flammable-fluid fire-protection requirements
                                                establish a level of safety equivalent to               maintained under all foreseeable                      of § 25.863 apply to rechargeable lithium
                                                that established by the existing                        operating conditions to preclude fire                 battery installations.
                                                airworthiness standards.                                and explosion.
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                                                                                                           2. Be designed to preclude the                        Note 4: Special conditions 7 and 8 require
                                                Applicability                                           occurrence of self-sustaining,
                                                                                                                                                              rechargeable lithium batteries to have
                                                                                                                                                              ‘‘automatic’’ means, for charge rate and
                                                  As discussed above, these special                     uncontrolled increases in temperature                 disconnect, due to the fast-acting nature of
                                                conditions are applicable to the Textron                or pressure.                                          lithium battery chemical reactions. Manual
                                                Model 550/S550/560/560XL airplanes                         3. Not emit explosive or toxic gases in            intervention would not be timely or effective
                                                as modified by Avionics Design Services                 normal operation, or as a result of its               in mitigating the hazards associated with
                                                Ltd. Should Avionics Design Services                    failure, that may accumulate in                       these batteries.



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                                                14122               Federal Register / Vol. 82, No. 51 / Friday, March 17, 2017 / Rules and Regulations

                                                  Issued in Renton, Washington, on February             Doc. 2014–04559 Filed 2–28–14; 8:45                   telephone 425–227–2785; facsimile
                                                23, 2017.                                               a.m.] published on March 3, 2014 (79                  425–227–1320.
                                                Michael Kaszycki,                                       FR 11679), make the following                         SUPPLEMENTARY INFORMATION:
                                                Assistant Manager, Transport Airplane                   correction:
                                                Directorate, Aircraft Certification Service.               On page 11679, column 3, in the first              Background
                                                [FR Doc. 2017–05334 Filed 3–16–17; 8:45 am]             and second paragraphs of the                             On June 26, 2015, Aerocon applied for
                                                BILLING CODE 4910–13–P                                  Background section; and on page 11680,                a supplemental type certificate to install
                                                                                                        column 1, in the first paragraph of the               an access hatch between the cabin and
                                                                                                        Type Certification Basis section, change              Class C cargo compartment in the
                                                DEPARTMENT OF TRANSPORTATION                            ‘‘A57NM’’ to ‘‘A56NM.’’                               Boeing Model 777–200 airplane. This
                                                                                                          Issued in Renton, Washington on February            airplane is a twin-engine, transport-
                                                Federal Aviation Administration                                                                               category airplane with a VIP interior
                                                                                                        10, 2017.
                                                                                                        Michael Kaszycki,                                     configuration. The Model 777–200 has a
                                                14 CFR Part 25                                                                                                maximum passenger capacity of 440,
                                                                                                        Assistant Manager, Transport Airplane
                                                [Docket No. FAA–2014–0078; Special                      Directorate, Aircraft Certification Service.          and a maximum takeoff weight of
                                                Conditions No. 25–543–SC]                               [FR Doc. 2017–05328 Filed 3–16–17; 8:45 am]           535,000 pounds.
                                                Special Conditions: Embraer S.A.                        BILLING CODE 4910–13–P                                Type Certification Basis
                                                Model ERJ–170 Airplanes; Seats With                                                                              Under the provisions of Title 14, Code
                                                Large, Non-Traditional, Non-Metallic                                                                          of Federal Regulations (14 CFR) 21.101,
                                                                                                        DEPARTMENT OF TRANSPORTATION
                                                Panels                                                                                                        Aerocon must show that the Boeing
                                                AGENCY:  Federal Aviation                               Federal Aviation Administration                       Model 777–200 airplane, as changed,
                                                Administration (FAA), DOT.                                                                                    continues to meet the applicable
                                                ACTION: Final special conditions; request
                                                                                                        14 CFR Part 25                                        provisions of the regulations listed in
                                                for comments; correction.                                                                                     Type Certificate No. T00001SE, or the
                                                                                                        [Docket No. FAA–2016–8247; Special
                                                                                                        Conditions No. 25–652–SC]                             applicable regulations in effect on the
                                                SUMMARY:    This document corrects an                                                                         date of application for the change,
                                                error that appeared in Federal Docket                   Special Conditions: Aerocon                           except for earlier amendments as agreed
                                                no. FAA–2014–0078, Special                              Engineering Company, Boeing Model                     upon by the FAA.
                                                Conditions no. 25–543–SC, which was                     777–200 Airplane; Access Hatch                           If the Administrator finds that the
                                                published in the Federal Register on                    Installed Between the Cabin and the                   applicable airworthiness regulations
                                                March 3, 2014 (79 FR 11679). The error                  Class C Cargo Compartment To Allow                    (i.e., 14 CFR part 25) do not contain
                                                is in the type-certificate number                       In-Flight Access to the Cargo                         adequate or appropriate safety standards
                                                referenced in the Background and Type                   Compartment                                           for the Boeing Model 777–200 airplane,
                                                Certification Basis sections of the                                                                           as changed, because of a novel or
                                                special conditions. It is being corrected               AGENCY:  Federal Aviation                             unusual design feature, special
                                                herein.                                                 Administration (FAA), DOT.                            conditions are prescribed under the
                                                DATES: The effective date of this                       ACTION: Final special conditions.                     provisions of § 21.16.
                                                correction is March 17, 2017                                                                                     Special conditions are initially
                                                                                                        SUMMARY:    These special conditions are              applicable to the model for which they
                                                FOR FURTHER INFORMATION CONTACT:                        issued for the Boeing Model 777–200
                                                Jayson Claar, FAA, Airframe and Cabin                                                                         are issued. Should the applicant apply
                                                                                                        airplane. This airplane, as modified by               for a supplemental type certificate to
                                                Safety Branch, ANM–111, Transport                       Aerocon Engineering Company
                                                Airplane Directorate, Aircraft                                                                                modify any other model included on the
                                                                                                        (Aerocon), will have a novel or unusual               same type certificate to incorporate the
                                                Certification Service, 1601 Lind Avenue                 design feature when compared to the
                                                SW., Renton, Washington 98057–3356;                                                                           same novel or unusual design feature,
                                                                                                        state of technology envisioned in the                 these special conditions would also
                                                telephone 425–227–2194; facsimile                       airworthiness standards for transport-
                                                425–227–1149.                                                                                                 apply to the other model under § 21.101.
                                                                                                        category airplanes. This design feature                  In addition to the applicable
                                                SUPPLEMENTARY INFORMATION:                              is an access hatch, installed between the             airworthiness regulations and special
                                                Background                                              cabin and the Class C cargo                           conditions, the Boeing Model 777–200
                                                                                                        compartment, to allow in-flight access                airplane, as modified by Aerocon, must
                                                   Special Conditions no. 25–543–SC                     to the Class C cargo compartment. The
                                                was published in the Federal Register                                                                         comply with the fuel-vent and exhaust-
                                                                                                        applicable airworthiness regulations do               emission requirements of 14 CFR part
                                                on March 3, 2014 (79 FR 11679). The                     not contain adequate or appropriate
                                                document issued special conditions                                                                            34, and the noise-certification
                                                                                                        safety standards for this design feature.             requirements of 14 CFR part 36.
                                                pertaining to seats with large, non-                    These special conditions contain the
                                                traditional, non-metallic panels.                                                                                The FAA issues special conditions, as
                                                                                                        additional safety standards that the
                                                   As published, the document                                                                                 defined in 14 CFR 11.19, in accordance
                                                                                                        Administrator considers necessary to
                                                contained four errors, each referring to                                                                      with § 11.38, and they become part of
                                                                                                        establish a level of safety equivalent to
                                                the type-certificate number for the                                                                           the type certification basis under
                                                                                                        that established by the existing
                                                Embraer S.A. Model ERJ–170 airplane.                                                                          § 21.101.
                                                                                                        airworthiness standards.
                                                   Because no other part of the                                                                               Novel or Unusual Design Features
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                                                regulatory information has been                         DATES: Effective April 17, 2017.
                                                changed, the special conditions                         FOR FURTHER INFORMATION CONTACT: John                   The Boeing Model 777–200 airplane,
                                                document is not being re-published.                     Shelden, FAA, Airframe and Cabin                      as modified by Aerocon, will
                                                                                                        Safety Branch, ANM–115, Transport                     incorporate the following novel or
                                                Correction                                              Airplane Directorate, Aircraft                        unusual design feature: An access hatch
                                                  In the Final Special Conditions,                      Certification Service, 1601 Lind Avenue               installed between the cabin and the
                                                Request for Comments document [FR                       SW., Renton, Washington 98057–3356;                   Class C cargo compartment, to allow in-


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Document Created: 2017-03-17 02:48:46
Document Modified: 2017-03-17 02:48:46
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionRules and Regulations
ActionFinal special conditions; request for comments.
DatesThis action is effective on Textron on March 17, 2017. We must receive your comments by May 1, 2017.
ContactNazih Khaouly, FAA, Airplane and Flightcrew Interface Branch, ANM-111, Transport Airplane Directorate, Aircraft Certification Service, 1601 Lind Avenue SW., Renton, Washington 98057-3356; telephone 425-227-2432; facsimile 425-227-1320.
FR Citation82 FR 14119 
CFR AssociatedAircraft; Aviation Safety and Reporting and Recordkeeping Requirements

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