82 FR 24225 - Special Conditions: Textron Aviation Inc., Model 680 Airplane; Non-Rechargeable Lithium Battery Installations
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 82, Issue 101 (May 26, 2017)
Federal Aviation Administration
Federal Register Volume 82, Issue 101 (May 26, 2017)
| Page Range | 24225-24227 | |
| FR Document | 2017-10841 |
[Federal Register Volume 82, Number 101 (Friday, May 26, 2017)] [Rules and Regulations] [Pages 24225-24227] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2017-10841] [[Page 24225]] ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 25 [Docket No. FAA-2017-0376; Special Conditions No. 25-680-SC] Special Conditions: Textron Aviation Inc., Model 680 Airplane; Non-Rechargeable Lithium Battery Installations AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final special conditions; request for comment. ----------------------------------------------------------------------- SUMMARY: These special conditions are issued for non-rechargeable lithium battery installations on the Textron Aviation Inc. (Textron) Model 680 airplane. Non-rechargeable lithium batteries are a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for transport category 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 May 26, 2017. We must receive your comments by July 10, 2017. ADDRESSES: Send comments identified by docket number FAA-2017-0376 using any of the following methods:Federal eRegulations Portal: Go to http://www.regulations.gov/ and follow the online instructions for sending your comments electronically. 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. 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. 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, Airplane and Flight Crew Interface Branch, ANM-111, Transport Airplane Directorate, Aircraft Certification Service, 1601 Lind Avenue SW., Renton, Washington, 98057-3356; telephone 425-227-2432; facsimile 425-227-1149. SUPPLEMENTARY INFORMATION: Future Requests for Installation of Non-Rechargeable Lithium Batteries The FAA anticipates that non-rechargeable lithium batteries will be installed in most makes and models of transport category airplanes. We intend to require special conditions for certification projects involving non-rechargeable lithium battery installations to address certain safety issues until we can revise the airworthiness requirements. Applying special conditions to these installations across the range of transport category airplanes will ensure regulatory consistency. Typically, the FAA issues special conditions after receiving an application for type certificate approval of a novel or unusual design feature. However, the FAA has found that the presence of non- rechargeable lithium batteries in certification projects is not always immediately identifiable, since the battery itself may not be the focus of the project. Meanwhile, the inclusion of these batteries has become virtually ubiquitous on in-production transport category airplanes, which shows that there will be a need for these special conditions. Also, delaying the issuance of special conditions until after each design application is received could lead to costly certification delays. Therefore the FAA finds it necessary to issue special conditions applicable to these battery installations on particular makes and models of aircraft. On April 22, 2016, the FAA published special conditions no. 25-612- SC in the Federal Register (81 FR 23573) applicable to Gulfstream Aerospace Corporation for the GVI airplane. Those were the first special conditions the FAA issued for non-rechargeable lithium battery installations. We explained in that document our decision to make those special conditions effective one year after publication in the Federal Register, which is April 22, 2017. In those special conditions, the FAA stated its intention to apply non-rechargeable lithium battery special conditions to design changes on other makes and models applied for after this same date. Section 1205 of the FAA Reauthorization Act of 1996 requires the FAA to consider the extent to which Alaska is not served by transportation modes other than aviation and to establish appropriate regulatory distinctions when modifying airworthiness regulations that affect intrastate aviation in Alaska. In consideration of this requirement and the overall impact on safety, the FAA does not intend to require non-rechargeable lithium battery special conditions for design changes that only replace a 121.5 megahertz (MHz) emergency locator transmitter (ELT) with a 406 MHz ELT that meets Technical Standard Order C126b, or later revision, on transport airplanes operating only in Alaska. This will support our efforts of encouraging operators in Alaska to upgrade to a 406 MHz ELT. These ELTs provide significantly improved accuracy for lifesaving services to locate an accident site in Alaskan terrain. The FAA considers that the safety benefits from upgrading to a 406 MHz ELT for Alaskan operations will outweigh the battery fire risk. Comments Invited The substance of these special conditions has been subjected to the notice and comment period in 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, 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. We invite interested people to take part in this rulemaking by sending [[Page 24226]] 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 Textron holds type certificate no. T00012WI, which provides the certification basis for the Model 680 airplane. The Model 680 is a twin engine, transport category airplane with a passenger seating capacity of 12 and a maximum takeoff weight of 30,300 to 30,775 pounds, depending on the specific design. The FAA is issuing these special conditions for non-rechargeable lithium battery installations on the Model 680 airplane. The current battery requirements in title 14, Code of Federal Regulations (14 CFR) part 25 are inadequate for addressing an airplane with non-rechargeable lithium batteries. Type Certification Basis Under the provisions of 14 CFR 21.101, Textron must show that the Model 680 airplane meets the applicable provisions of the regulations listed in type certificate no. T00012WI or the applicable regulations in effect on the date of application for the change, except for earlier amendments as agreed upon by the FAA. In addition, the certification basis includes certain special conditions, exemptions, or later amended sections that are not relevant to these special conditions. 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 Model 680 airplane 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 airplane model for which they are issued. Should the type certificate for that model be amended later to include any other model that incorporates the same novel or unusual design feature, or should any other model already included on the same type certificate be modified 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 680 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 Feature The novel or unusual design feature is the installation of non- rechargeable lithium batteries. For the purpose of these special conditions, we refer to a battery and battery system as a battery. A battery system consists of the battery and any protective, monitoring, and alerting circuitry or hardware inside or outside of the battery. It also includes vents (where necessary) and packaging. Discussion The FAA derived the current regulations governing installation of batteries in transport category airplanes from Civil Air Regulations (CAR) 4b.625(d) as part of the recodification of CAR 4b that established 14 CFR part 25 in February 1965. This recodification basically reworded the CAR 4b battery requirements, which are currently in Sec. 25.1353(b)(1) through (4). Non-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 revealed unanticipated failure modes. A National Transportation Safety Board (NTSB) letter to the FAA, dated May 22, 2014, which is available at http://www.ntsb.gov, filename A-14-032-036.pdf, describes these events. On July 12, 2013, an event involving a non-rechargeable lithium battery in an emergency locator transmitter installation demonstrated unanticipated failure modes. The United Kingdom's Air Accidents Investigation Branch Bulletin S5/2013 describes this event. Some known uses of rechargeable and non-rechargeable lithium batteries on airplanes include: 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 and communication systems, communication management units, and remote-monitor electronic line-replaceable units; Cabin safety, entertainment, and communications equipment, including emergency locator transmitters, 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, remotes, and handsets; Systems in cargo areas including door controls, sensors, video surveillance equipment, and security systems. Some known potential hazards and failure modes associated with non- rechargeable lithium batteries are: 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. 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. Flammability: Unlike nickel-cadmium and lead-acid batteries, lithium batteries use higher energy and current in an electrochemical system that can be configured to maximize energy storage of lithium. They also 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. Special condition no. 1 of these special conditions requires that each individual cell within a non-rechargeable lithium battery be designed to maintain safe temperatures and pressures. Special condition no. 2 addresses these same issues but for the entire battery. Special condition no. 2 requires the battery be designed to prevent propagation of a thermal event, such as self-sustained, uncontrollable [[Page 24227]] increases in temperature or pressure from one cell to adjacent cells. Special conditions nos. 1 and 2 are intended to ensure that the non-rechargeable lithium battery and its cells are designed to eliminate the potential for uncontrollable failures. However, a certain number of failures will occur due to various factors beyond the control of the battery designer. Therefore, other special conditions are intended to protect the airplane and its occupants if failure occurs. Special conditions 3, 7, and 8 are self-explanatory. Special condition no. 4 makes it clear that the flammable fluid fire protection requirements of Sec. 25.863 apply to non-rechargeable lithium battery installations. Section 25.863 is applicable to areas of the airplane that could be exposed to flammable fluid leakage from airplane systems. Non-rechargeable lithium batteries contain an electrolyte that is a flammable fluid. Special condition no. 5 requires that each non-rechargeable lithium battery installation not damage surrounding structure or adjacent systems, equipment, or electrical wiring from corrosive fluids or gases that may escape in such a way as to cause a major or more severe failure condition. While special condition no. 5 addresses corrosive fluids and gases, special condition no. 6 addresses heat. Special condition no. 6 requires that each non-rechargeable lithium battery installation have provisions to prevent any hazardous effect on airplane structure or systems caused by the maximum amount of heat the battery installation can generate due to any failure of it or its individual cells. The means of meeting special conditions nos. 5 and 6 may be the same, but the requirements are independent and address different hazards. These special conditions apply to all non-rechargeable lithium battery installations in lieu of Sec. 25.1353(b)(1) through (4) at Amendment 25-123 or Sec. 25.1353(c)(1) through (4) at earlier amendments. Those regulations remain in effect for other battery installations. 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 These special conditions are applicable to the Model 680 airplane. Should Textron apply at a later date for a change to the type certificate to include another model incorporating the same novel or unusual design feature, these special conditions would apply to that model as well. These special conditions are only applicable to design changes applied for after the effective date. These special conditions are not applicable to changes to previously certified non-rechargeable lithium battery installations where the only change is either cosmetic or to relocate the installation to improve the safety of the airplane and occupants. Previously certified non-rechargeable lithium battery installations, as used in this paragraph, are those installations approved for certification projects applied for on or before the effective date of these special conditions. A cosmetic change is a change in appearance only, and does not change any function or safety characteristic of the battery installation. These special conditions are also not applicable to unchanged, previously certified non-rechargeable lithium battery installations that are affected by a change in a manner that improves the safety of its installation. The FAA determined that these exclusions are in the public interest because the need to meet all of the special conditions might otherwise deter these design changes that improve safety. Conclusion This action affects only a certain novel or unusual design feature on one model of airplane. It is not a rule of general applicability. The substance of these special conditions has been subjected to the notice and comment period in 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, 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 record keeping 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 the Textron Model 680 airplane. Non-Rechargeable Lithium Battery Installations In lieu of Sec. 25.1353(b)(1) through (4) at Amendment 25-123 or Sec. 25.1353(c)(1) through (4) at earlier amendments, each non- rechargeable lithium battery installation must: 1. Be designed to maintain safe cell temperatures and pressures under all foreseeable operating conditions to prevent fire and explosion. 2. Be designed to prevent the occurrence of self-sustaining, uncontrollable increases in temperature or pressure. 3. Not emit explosive or toxic gases, either in normal operation or as a result of its failure, that may accumulate in hazardous quantities within the airplane. 4. Meet the requirements of Sec. 25.863. 5. Not damage surrounding structure or adjacent systems, equipment, or electrical wiring from corrosive fluids or gases that may escape in such a way as to cause a major or more severe failure condition. 6. Have provisions to prevent any hazardous effect on airplane structure or systems caused by the maximum amount of heat it can generate due to any failure of it or its individual cells. 7. Have a failure sensing and warning system to alert the flightcrew if its failure affects safe operation of the airplane. 8. Have a means for the flightcrew or maintenance personnel to determine the battery charge state if the battery's function is required for safe operation of the airplane. Note: A battery system consists of the battery 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. Issued in Renton, Washington, on May 17, 2017. Michael Kaszycki, Assistant Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2017-10841 Filed 5-25-17; 8:45 am] BILLING CODE 4910-13-P
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DEPARTMENT OF TRANSPORTATION docket, including the name of the Federal Register (81 FR 23573)
individual sending the comment (or applicable to Gulfstream Aerospace
Federal Aviation Administration signing the comment for an association, Corporation for the GVI airplane. Those
business, labor union, etc.). DOT’s were the first special conditions the
14 CFR Part 25 complete Privacy Act Statement can be FAA issued for non-rechargeable
[Docket No. FAA–2017–0376; Special found in the Federal Register published lithium battery installations. We
Conditions No. 25–680–SC] on April 11, 2000 (65 FR 19477– explained in that document our
19478), as well as at http://DocketsInfo. decision to make those special
Special Conditions: Textron Aviation dot.gov/. conditions effective one year after
Inc., Model 680 Airplane; Non- Docket: Background documents or publication in the Federal Register,
Rechargeable Lithium Battery comments received may be read at which is April 22, 2017. In those special
Installations http://www.regulations.gov/ at any time. conditions, the FAA stated its intention
Follow the online instructions for to apply non-rechargeable lithium
AGENCY: Federal Aviation accessing the docket or go to Docket battery special conditions to design
Administration (FAA), DOT. Operations in Room W12–140 of the changes on other makes and models
ACTION: Final special conditions; request West Building Ground Floor at 1200 applied for after this same date.
for comment. New Jersey Avenue SE., Washington, Section 1205 of the FAA
DC, between 9 a.m. and 5 p.m., Monday Reauthorization Act of 1996 requires the
SUMMARY: These special conditions are through Friday, except Federal holidays. FAA to consider the extent to which
issued for non-rechargeable lithium Alaska is not served by transportation
FOR FURTHER INFORMATION CONTACT:
battery installations on the Textron modes other than aviation and to
Nazih Khaouly, Airplane and Flight
Aviation Inc. (Textron) Model 680 establish appropriate regulatory
Crew Interface Branch, ANM–111,
airplane. Non-rechargeable lithium distinctions when modifying
Transport Airplane Directorate, Aircraft
batteries are a novel or unusual design airworthiness regulations that affect
Certification Service, 1601 Lind Avenue
feature when compared to the state of intrastate aviation in Alaska. In
SW., Renton, Washington, 98057–3356;
technology envisioned in the consideration of this requirement and
telephone 425–227–2432; facsimile
airworthiness standards for transport the overall impact on safety, the FAA
425–227–1149.
category airplanes. The applicable does not intend to require non-
SUPPLEMENTARY INFORMATION:
airworthiness regulations do not contain rechargeable lithium battery special
adequate or appropriate safety standards Future Requests for Installation of Non- conditions for design changes that only
for this design feature. These special Rechargeable Lithium Batteries replace a 121.5 megahertz (MHz)
conditions contain the additional safety The FAA anticipates that non- emergency locator transmitter (ELT)
standards that the Administrator rechargeable lithium batteries will be with a 406 MHz ELT that meets
considers necessary to establish a level installed in most makes and models of Technical Standard Order C126b, or
of safety equivalent to that established transport category airplanes. We intend later revision, on transport airplanes
by the existing airworthiness standards. to require special conditions for operating only in Alaska. This will
DATES: This action is effective on certification projects involving non- support our efforts of encouraging
Textron on May 26, 2017. We must rechargeable lithium battery operators in Alaska to upgrade to a 406
receive your comments by July 10, 2017. installations to address certain safety MHz ELT. These ELTs provide
ADDRESSES: Send comments identified issues until we can revise the significantly improved accuracy for
by docket number FAA–2017–0376 airworthiness requirements. Applying lifesaving services to locate an accident
using any of the following methods: special conditions to these installations site in Alaskan terrain. The FAA
• Federal eRegulations Portal: Go to across the range of transport category considers that the safety benefits from
http://www.regulations.gov/ and follow airplanes will ensure regulatory upgrading to a 406 MHz ELT for
the online instructions for sending your consistency. Alaskan operations will outweigh the
comments electronically. Typically, the FAA issues special battery fire risk.
• Mail: Send comments to Docket conditions after receiving an application
Comments Invited
Operations, M–30, U.S. Department of for type certificate approval of a novel
Transportation (DOT), 1200 New Jersey or unusual design feature. However, the The substance of these special
Avenue SE., Room W12–140, West FAA has found that the presence of non- conditions has been subjected to the
Building Ground Floor, Washington, DC rechargeable lithium batteries in notice and comment period in prior
20590–0001. certification projects is not always instances and has been derived without
• Hand Delivery or Courier: Take immediately identifiable, since the substantive change from those
comments to Docket Operations in battery itself may not be the focus of the previously issued. It is unlikely that
Room W12–140 of the West Building project. Meanwhile, the inclusion of prior public comment would result in a
Ground Floor at 1200 New Jersey these batteries has become virtually significant change from the substance
Avenue SE., Washington, DC, between 9 ubiquitous on in-production transport contained herein. Therefore, the FAA
a.m. and 5 p.m., Monday through category airplanes, which shows that has determined that prior public notice
Friday, except Federal holidays. there will be a need for these special and comment are unnecessary and
• Fax: Fax comments to Docket conditions. Also, delaying the issuance impracticable, and good cause exists for
Operations at 202–493–2251. of special conditions until after each adopting these special conditions upon
Privacy: The FAA will post all design application is received could publication in the Federal Register. The
mstockstill on DSK30JT082PROD with RULES
comments it receives, without change, lead to costly certification delays. FAA is requesting comments to allow
to http://www.regulations.gov/, Therefore the FAA finds it necessary to interested persons to submit views that
including any personal information the issue special conditions applicable to may not have been submitted in
commenter provides. Using the search these battery installations on particular response to the prior opportunities for
function of the docket Web site, anyone makes and models of aircraft. comment described above.
can find and read the electronic form of On April 22, 2016, the FAA published We invite interested people to take
all comments received into any FAA special conditions no. 25–612–SC in the part in this rulemaking by sending
VerDate Sep<11>2014 19:00 May 25, 2017 Jkt 241001 PO 00000 Frm 00015 Fmt 4700 Sfmt 4700 E:\FR\FM\26MYR1.SGM 26MYR1](https://thefederalregister.org/doc/82_FR_24326/page/1.svg)
![Federal Register / Vol. 82, No. 101 / Friday, May 26, 2017 / Rules and Regulations 24227
increases in temperature or pressure these special conditions would apply to The Special Conditions
from one cell to adjacent cells. that model as well.
Special conditions nos. 1 and 2 are Accordingly, pursuant to the
These special conditions are only authority delegated to me by the
intended to ensure that the non- applicable to design changes applied for
rechargeable lithium battery and its Administrator, the following special
after the effective date. conditions are issued as part of the type
cells are designed to eliminate the
potential for uncontrollable failures. These special conditions are not certification basis for the Textron Model
However, a certain number of failures applicable to changes to previously 680 airplane.
will occur due to various factors beyond certified non-rechargeable lithium
battery installations where the only Non-Rechargeable Lithium Battery
the control of the battery designer. Installations
Therefore, other special conditions are change is either cosmetic or to relocate
intended to protect the airplane and its the installation to improve the safety of In lieu of § 25.1353(b)(1) through (4)
occupants if failure occurs. the airplane and occupants. Previously at Amendment 25–123 or § 25.1353(c)(1)
Special conditions 3, 7, and 8 are self- certified non-rechargeable lithium through (4) at earlier amendments, each
explanatory. battery installations, as used in this non-rechargeable lithium battery
Special condition no. 4 makes it clear paragraph, are those installations installation must:
that the flammable fluid fire protection approved for certification projects
requirements of § 25.863 apply to non- applied for on or before the effective 1. Be designed to maintain safe cell
rechargeable lithium battery date of these special conditions. A temperatures and pressures under all
installations. Section 25.863 is cosmetic change is a change in foreseeable operating conditions to
applicable to areas of the airplane that appearance only, and does not change prevent fire and explosion.
could be exposed to flammable fluid any function or safety characteristic of 2. Be designed to prevent the
leakage from airplane systems. Non- the battery installation. These special occurrence of self-sustaining,
rechargeable lithium batteries contain conditions are also not applicable to uncontrollable increases in temperature
an electrolyte that is a flammable fluid. unchanged, previously certified non- or pressure.
Special condition no. 5 requires that rechargeable lithium battery 3. Not emit explosive or toxic gases,
each non-rechargeable lithium battery installations that are affected by a either in normal operation or as a result
installation not damage surrounding change in a manner that improves the of its failure, that may accumulate in
structure or adjacent systems, safety of its installation. The FAA hazardous quantities within the
equipment, or electrical wiring from determined that these exclusions are in airplane.
corrosive fluids or gases that may escape the public interest because the need to
in such a way as to cause a major or meet all of the special conditions might 4. Meet the requirements of § 25.863.
more severe failure condition. otherwise deter these design changes 5. Not damage surrounding structure
While special condition no. 5 that improve safety. or adjacent systems, equipment, or
addresses corrosive fluids and gases, electrical wiring from corrosive fluids or
special condition no. 6 addresses heat. Conclusion gases that may escape in such a way as
Special condition no. 6 requires that This action affects only a certain to cause a major or more severe failure
each non-rechargeable lithium battery novel or unusual design feature on one condition.
installation have provisions to prevent model of airplane. It is not a rule of 6. Have provisions to prevent any
any hazardous effect on airplane general applicability. hazardous effect on airplane structure or
structure or systems caused by the systems caused by the maximum
maximum amount of heat the battery The substance of these special
conditions has been subjected to the amount of heat it can generate due to
installation can generate due to any any failure of it or its individual cells.
failure of it or its individual cells. The notice and comment period in prior
means of meeting special conditions instances and has been derived without 7. Have a failure sensing and warning
nos. 5 and 6 may be the same, but the substantive change from those system to alert the flightcrew if its
requirements are independent and previously issued. It is unlikely that failure affects safe operation of the
address different hazards. prior public comment would result in a airplane.
These special conditions apply to all significant change from the substance 8. Have a means for the flightcrew or
non-rechargeable lithium battery contained herein. Therefore, the FAA maintenance personnel to determine the
installations in lieu of § 25.1353(b)(1) has determined that prior public notice battery charge state if the battery’s
through (4) at Amendment 25–123 or and comment are unnecessary and function is required for safe operation of
§ 25.1353(c)(1) through (4) at earlier impracticable, and good cause exists for the airplane.
amendments. Those regulations remain adopting these special conditions upon
publication in the Federal Register. The Note: A battery system consists of the
in effect for other battery installations. battery and any protective, monitoring, and
These special conditions contain the FAA is requesting comments to allow
alerting circuitry or hardware inside or
additional safety standards that the interested persons to submit views that outside of the battery. It also includes vents
Administrator considers necessary to may not have been submitted in (where necessary) and packaging. For the
establish a level of safety equivalent to response to the prior opportunities for purpose of these special conditions, a
that established by the existing comment described above. ‘‘battery’’ and ‘‘battery system’’ are referred to
airworthiness standards. as a battery.
List of Subjects in 14 CFR Part 25
Applicability
mstockstill on DSK30JT082PROD with RULES
Issued in Renton, Washington, on May 17,
Aircraft, Aviation safety, Reporting 2017.
These special conditions are and record keeping requirements.
applicable to the Model 680 airplane. Michael Kaszycki,
Should Textron apply at a later date for The authority citation for these Assistant Manager, Transport Airplane
a change to the type certificate to special conditions is as follows: Directorate, Aircraft Certification Service.
include another model incorporating the Authority: 49 U.S.C. 106(g), 40113, 44701, [FR Doc. 2017–10841 Filed 5–25–17; 8:45 am]
same novel or unusual design feature, 44702, 44704. BILLING CODE 4910–13–P
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Document Created: 2017-05-26 02:24:26
Document Modified: 2017-05-26 02:24:26
| Category | Regulatory Information | |
| Collection | Federal Register | |
| sudoc Class | AE 2.7: GS 4.107: AE 2.106: | |
| Publisher | Office of the Federal Register, National Archives and Records Administration | |
| Section | Rules and Regulations | |
| Action | Final special conditions; request for comment. | |
| Dates | This action is effective on Textron on May 26, 2017. We must receive your comments by July 10, 2017. | |
| Contact | Nazih Khaouly, Airplane and Flight Crew Interface Branch, ANM-111, Transport Airplane Directorate, Aircraft Certification Service, 1601 Lind Avenue SW., Renton, Washington, 98057-3356; telephone 425-227-2432; facsimile 425-227-1149. | |
| FR Citation | 82 FR 24225 | |
| CFR Associated | Aircraft; Aviation Safety and Reporting and Record Keeping Requirements |
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