80 FR 67621 - Special Conditions: TIMCO Aerosystems, Boeing Model 777-300ER Series Airplanes; Dynamic Test Requirements for Single-Occupant, Oblique (Side-Facing) Seats with Airbag Devices
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 80, Issue 212 (November 3, 2015)
Federal Aviation Administration
Federal Register Volume 80, Issue 212 (November 3, 2015)
| Page Range | 67621-67623 | |
| FR Document | 2015-27936 |
[Federal Register Volume 80, Number 212 (Tuesday, November 3, 2015)] [Rules and Regulations] [Pages 67621-67623] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2015-27936] ======================================================================== Rules and Regulations Federal Register ________________________________________________________________________ This section of the FEDERAL REGISTER contains regulatory documents having general applicability and legal effect, most of which are keyed to and codified in the Code of Federal Regulations, which is published under 50 titles pursuant to 44 U.S.C. 1510. The Code of Federal Regulations is sold by the Superintendent of Documents. Prices of new books are listed in the first FEDERAL REGISTER issue of each week. ======================================================================== Federal Register / Vol. 80, No. 212 / Tuesday, November 3, 2015 / Rules and Regulations [[Page 67621]] DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 25 [Docket No. FAA-2015-2123; Special Conditions No. 25-604-SC] Special Conditions: TIMCO Aerosystems, Boeing Model 777-300ER Series Airplanes; Dynamic Test Requirements for Single-Occupant, Oblique (Side-Facing) Seats with Airbag Devices AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final special conditions; request for comments. ----------------------------------------------------------------------- SUMMARY: These special conditions are issued for Boeing Model 777-300ER series airplanes. This airplane, as modified by TIMCO Aerosystems, will have novel or unusual design features associated with oblique-angled, single-occupant seats equipped with airbag systems. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for these design features. These special conditions contain the additional safety standards the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards. DATES: The effective date of these special conditions is November 3, 2015. We must receive your comments by December 18, 2015. ADDRESSES: Send comments identified by docket number FAA-2015-2123 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: John Shelden, Airframe and Cabin Safety, ANM-115, Transport Airplane Directorate, Aircraft Certification Service, 1601 Lind Avenue SW., Renton, Washington 98057-3356; telephone 425-227-2785; facsimile 425-227-1149. SUPPLEMENTARY INFORMATION: The FAA has determined that notice of, and opportunity for, prior public comment on these special conditions are impracticable because these procedures would significantly delay issuance of the design approval and thus delivery of the affected airplane. In addition, the substance of these special conditions has been subject to the public-comment process in several prior instances with no substantive comments received. The FAA therefore finds that good cause exists for making these special conditions effective upon issuance. 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 August 20, 2014, through FAA project no. ST14746AT-T, certification plan no. 13T422R006, TIMCO Aerosystems applied for a supplemental type certificate to allow the installation of oblique passenger seats, positioned at 30 degrees to the vertical plane of the airplane longitudinal centerline, and to include inflatable lap belts, in Boeing Model 777-300ER airplanes. The Boeing Model 777-300ER airplane is a wide-body, swept-wing, conventional-tail, twin-engine, turbofan-powered transport airplane, with seating capacity for 550 passengers and 11 crew members. TIMCO Aerosystems proposes the installation of oblique (side- facing) B/E Aerospace Super Diamond Business Class (B/C) seats. These seats will include airbag devices for occupant restraint and injury protection. Type Certification Basis Under the provisions of Sec. 21.101, TIMCO Aerosystems must show that the 777-300ER, as changed, continues to meet the applicable provisions of the regulations listed in type certificate no. T00001SE, or the applicable regulations in effect on the date of application for the change, except for earlier amendments as agreed upon by the FAA. The regulations listed in the type certificate are commonly referred to as the ``original type-certification basis.'' The regulations listed in type certificate no. T00001SE are as follows: The type-certification basis for the Model 777-300ER airplane is 14 CFR part 25, effective February 1, 1965, as amended by Amendments 25-1 through 25-98, including special conditions 25-295-SC and 25-187A-SC. In addition, the certification basis includes certain special conditions, exemptions, or later [[Page 67622]] amended sections of the applicable part that are not relevant to these proposed 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 Boeing Model 777-300ER 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 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 Boeing Model 777-300ER airplane 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 Boeing Model 777-300ER airplane will incorporate the following novel or unusual design features: Installation of B/E Aerospace Super Diamond Business Class (B/C) seats manufactured by B/E Aerospace in ``J'' class, to be installed at an angle of 30 degrees to the airplane centerline. These seats will include airbag devices for occupant restraint and injury protection. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for occupants of seats installed in the proposed configuration. The seating configuration TIMCO Aerosystems proposes is novel and unusual due to the seat installation at 30 degrees to the airplane centerline, the airbag-system installation, and the seat/occupant interface with the surrounding furniture that introduces occupant alignment and loading concerns. Ongoing research is progressing to establish acceptable occupant- injury limits. Until those limits become available, the FAA proposes a set of interim limits based on the current literature available, current National Highway Traffic Safety Administration (NHTSA) regulations, and preliminary test data from the research program. The existing regulations do not provide adequate or appropriate safety standards for occupants of oblique-angled seats with airbag systems. To provide a level of safety that is equivalent to that afforded occupants of forward- and aft-facing seats, additional airworthiness standards, in the form of special conditions, are necessary. These special conditions supplement part 25 and, more specifically, supplement Sec. Sec. 25.562 and 25.785. The requirements contained in these special conditions consist of both test conditions and injury pass/fail criteria. Discussion Amendment 25-15 to part 25, dated October 24, 1967, introduced the subject of side-facing seats, and a requirement that each occupant in a side-facing seat must be protected from head injury by a safety belt and a cushioned rest that will support the arms, shoulders, head, and spine. Subsequently, Amendment 25-20, dated April 23, 1969, clarified the definition of side-facing seats to require that each occupant of a seat, positioned at more than an 18-degree angle to the vertical plane of the airplane longitudinal centerline, must be protected from head injury by a safety belt and an energy-absorbing rest that will support the arms, shoulders, head, and spine; or by a safety belt and shoulder harness that will prevent the head from contacting any injurious object. The FAA concluded that an 18-degree angle would provide an adequate level of safety based on tests that were performed at that time, and thus adopted that standard. Part 25 was amended June 16, 1988, by Amendment 25-64, to revise the emergency-landing conditions that must be considered in the design of the airplane. Amendment 25-64 revised the static-load conditions in 14 CFR 25.561, and added the new Sec. 25.562 that requires dynamic testing for all seats approved for occupancy during takeoff and landing. The intent of Amendment 25-64 is to provide an improved level of safety for occupants on transport-category airplanes. Because most seating is forward-facing on transport-category airplanes, the pass/ fail criteria developed in Amendment 25-64 focused primarily on these seats. As a result, the FAA issued Policy Memorandums ANM-03-115-30 and PS-ANM-100-2000-00123 to provide the additional guidance necessary to demonstrate the level of safety required by the regulations for side- facing seats, and their mounting plates and adapters. Special conditions 25-295-SC were issued on August 9, 2005, for the Boeing Model 777, with injury criteria for seats installed at an oblique angle; however, those injury criteria were developed for a seat configuration that provided body support for the occupant, and do not directly address the complex occupant-loading conditions introduced by the oblique seat configuration that is the subject of these new special conditions. To reflect current research findings, the FAA developed a methodology to address all fully side-facing seats (i.e., seats positioned in the airplane with the occupant facing 90 degrees to the vertical plane of the airplane centerline), and has documented those requirements in a set of new special conditions. The FAA issued Policy Statement PS-ANM-25-03-R1 to define revised injury criteria associated with neck and leg injuries as they relate to fully side-facing seats, i.e., seats installed 90 degrees to the airplane centerline. That policy statement does not address oblique seat installations. Some of those criteria are applicable to oblique seats but others are not, because the motion of an occupant in an oblique seat is different from the motion of an occupant in a fully side-facing seat during emergency- landing conditions. Most recently, on September, 30, 2015, the FAA issued special conditions 25-594-SC and 25-596-SC, applicable to the Boeing 747-8 and 777-200, for oblique seats. These new special conditions are identical to both of those special conditions. No public comments were received for those special conditions. Applicability As discussed above, these special conditions are applicable to the Boeing Model 777-300ER airplane. Should TIMCO apply at a later date for a supplemental type certificate to modify any other model included on type certificate no. T00001SE, to incorporate the same novel or unusual design feature, these special conditions would apply to the other model as well. Conclusion This action affects only certain novel or unusual design features on one model of airplane. 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 [[Page 67623]] 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 0 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 Boeing Model 777-300ER airplane as modified by TIMCO Aerosystems. Side-Facing Seats Special Conditions In addition to the requirements of Sec. 25.562: 1. Head-Injury Criteria Compliance with Sec. 25.562(c)(5) is required, except that, if the anthropomorphic test device (ATD) has no apparent contact with the seat/structure but has contact with an airbag, a head-injury criterion (HIC) unlimited score in excess of 1000 is acceptable, provided the HIC15 score (calculated in accordance with 49 CFR 571.208) for that contact is less than 700. 2. Body-to-Wall/Furnishing Contact If a seat is installed aft of structure (e.g., an interior wall or furnishing) that does not provide a homogenous contact surface for the expected range of occupants and yaw angles, then additional analysis and/or test(s) may be required to demonstrate that the injury criteria are met for the area that an occupant could contact. For example, if different yaw angles could result in different airbag performance, then additional analysis or separate test(s) may be necessary to evaluate performance. 3. Neck Injury Criteria The seating system must protect the occupant from experiencing serious neck injury. The assessment of neck injury must be conducted with the airbag device activated, unless there is reason to also consider that the neck-injury potential would be higher for impacts below the airbag-device deployment threshold. a. The Nij (calculated in accordance with 49 CFR 571.208) must be below 1.0, where Nij =Fz / Fzc + My /Myc , and Nij critical values are: i. Fzc = 1530 lb for tension ii. Fzc = 1385 lb for compression iii. Myc = 229 lb-ft in flexion iv. Myc = 100 lb-ft in extension b. In addition, peak upper-neck Fz must be below 937 lb of tension and 899 lb of compression. c. Rotation of the head about its vertical axis, relative to the torso, is limited to 105 degrees in either direction from forward- facing. d. The neck must not impact any surface that would produce concentrated loading on the neck. 4. Spine and Torso Injury Criteria a. The shoulders must remain aligned with the hips throughout the impact sequence, or support for the upper torso must be provided to prevent forward or lateral flailing beyond 45 degrees from the vertical during significant spinal loading. Alternatively, the lumbar spine tension (Fz ) cannot exceed 1200 lb. b. Significant concentrated loading on the occupant's spine, in the area between the pelvis and shoulders during impact, including rebound, is not acceptable. During this type of contact, the interval for any rearward (X-direction) acceleration exceeding 20g must be less than 3 milliseconds as measured by the thoracic instrumentation specified in 49 CFR part 572, subpart E, filtered in accordance with SAE International (SAE) J211-1. c. Occupant must not interact with the armrest or other seat components in any manner significantly different than would be expected for a forward-facing seat installation. 5. Longitudinal test(s), conducted to measure the injury criteria above, must be performed with the FAA Hybrid III ATD, as described in SAE 1999-01-1609. The test(s) must be conducted with an undeformed floor, at the most-critical yaw case(s) for injury, and with all lateral structural supports (armrests/walls) installed. Note: TIMCO Aerosystems must demonstrate that the installation of seats via plinths or pallets meets all applicable requirements. Compliance with the guidance contained in FAA Policy Memorandum PS- ANM-100-2000-00123, dated February 2, 2000, titled ``Guidance for Demonstrating Compliance with Seat Dynamic Testing for Plinths and Pallets,'' is acceptable to the FAA. Inflatable Lap Belt Special Conditions If inflatable lap belts are installed on single-place side-facing seats, the lap belts must meet Special Conditions no. 25-187A-SC. Issued in Renton, Washington, on October 28, 2015. Michael Kaszycki, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2015-27936 Filed 11-2-15; 8:45 am] BILLING CODE 4910-13-P
![67621
Rules and Regulations Federal Register
Vol. 80, No. 212
Tuesday, November 3, 2015
This section of the FEDERAL REGISTER Building Ground Floor, Washington, DC Comments Invited
contains regulatory documents having general 20590–0001.
applicability and legal effect, most of which
We invite interested people to take
Hand Delivery or Courier: Take part in this rulemaking by sending
are keyed to and codified in the Code of comments to Docket Operations in
Federal Regulations, which is published under written comments, data, or views. The
Room W12–140 of the West Building most helpful comments reference a
50 titles pursuant to 44 U.S.C. 1510.
Ground Floor at 1200 New Jersey specific portion of the special
The Code of Federal Regulations is sold by Avenue SE., Washington, DC, between 9 conditions, explain the reason for any
the Superintendent of Documents. Prices of a.m. and 5 p.m., Monday through recommended change, and include
new books are listed in the first FEDERAL Friday, except Federal holidays. supporting data.
REGISTER issue of each week. Fax: Fax comments to Docket We will consider all comments we
Operations at 202–493–2251. receive by the closing date for
Privacy: The FAA will post all
comments. We may change these special
DEPARTMENT OF TRANSPORTATION comments it receives, without change,
conditions based on the comments we
to http://www.regulations.gov/,
Federal Aviation Administration receive.
including any personal information the
commenter provides. Using the search Background
14 CFR Part 25 function of the docket Web site, anyone On August 20, 2014, through FAA
[Docket No. FAA–2015–2123; Special can find and read the electronic form of project no. ST14746AT–T, certification
Conditions No. 25–604–SC] all comments received into any FAA plan no. 13T422R006, TIMCO
docket, including the name of the Aerosystems applied for a supplemental
Special Conditions: TIMCO individual sending the comment (or type certificate to allow the installation
Aerosystems, Boeing Model 777– signing the comment for an association, of oblique passenger seats, positioned at
300ER Series Airplanes; Dynamic Test business, labor union, etc.). DOT’s 30 degrees to the vertical plane of the
Requirements for Single-Occupant, complete Privacy Act Statement can airplane longitudinal centerline, and to
Oblique (Side-Facing) Seats with be found in the Federal Register include inflatable lap belts, in Boeing
Airbag Devices published on April 11, 2000 (65 FR Model 777–300ER airplanes. The Boeing
AGENCY: Federal Aviation 19477–19478), as well as at http:// Model 777–300ER airplane is a wide-
Administration (FAA), DOT. DocketsInfo.dot.gov/. body, swept-wing, conventional-tail,
Docket: Background documents or twin-engine, turbofan-powered
ACTION: Final special conditions; request
comments received may be read at transport airplane, with seating capacity
for comments.
http://www.regulations.gov/ at any time. for 550 passengers and 11 crew
SUMMARY: These special conditions are Follow the online instructions for members.
issued for Boeing Model 777–300ER accessing the docket or go to Docket TIMCO Aerosystems proposes the
series airplanes. This airplane, as Operations in Room W12–140 of the installation of oblique (side-facing) B/E
modified by TIMCO Aerosystems, will West Building Ground Floor at 1200 Aerospace Super Diamond Business
have novel or unusual design features New Jersey Avenue SE., Washington, Class (B/C) seats. These seats will
associated with oblique-angled, single- DC, between 9 a.m. and 5 p.m., Monday include airbag devices for occupant
occupant seats equipped with airbag through Friday, except Federal holidays. restraint and injury protection.
systems. The applicable airworthiness FOR FURTHER INFORMATION CONTACT: John
regulations do not contain adequate or Shelden, Airframe and Cabin Safety, Type Certification Basis
appropriate safety standards for these ANM–115, Transport Airplane Under the provisions of § 21.101,
design features. These special Directorate, Aircraft Certification TIMCO Aerosystems must show that the
conditions contain the additional safety Service, 1601 Lind Avenue SW., 777–300ER, as changed, continues to
standards the Administrator considers Renton, Washington 98057–3356; meet the applicable provisions of the
necessary to establish a level of safety telephone 425–227–2785; facsimile regulations listed in type certificate no.
equivalent to that established by the 425–227–1149. T00001SE, or the applicable regulations
existing airworthiness standards. SUPPLEMENTARY INFORMATION: The FAA in effect on the date of application for
DATES: The effective date of these has determined that notice of, and the change, except for earlier
special conditions is November 3, 2015. opportunity for, prior public comment amendments as agreed upon by the
We must receive your comments by on these special conditions are FAA. The regulations listed in the type
December 18, 2015. impracticable because these procedures certificate are commonly referred to as
ADDRESSES: Send comments identified would significantly delay issuance of the ‘‘original type-certification basis.’’
by docket number FAA–2015–2123 the design approval and thus delivery of The regulations listed in type certificate
using any of the following methods: the affected airplane. no. T00001SE are as follows:
Federal eRegulations Portal: Go to In addition, the substance of these The type-certification basis for the
mstockstill on DSK4VPTVN1PROD with RULES
http://www.regulations.gov/ and follow special conditions has been subject to Model 777–300ER airplane is 14 CFR
the online instructions for sending your the public-comment process in several part 25, effective February 1, 1965, as
comments electronically. prior instances with no substantive amended by Amendments 25–1 through
Mail: Send comments to Docket comments received. The FAA therefore 25–98, including special conditions 25–
Operations, M–30, U.S. Department of finds that good cause exists for making 295–SC and 25–187A–SC. In addition,
Transportation (DOT), 1200 New Jersey these special conditions effective upon the certification basis includes certain
Avenue SE., Room W12–140, West issuance. special conditions, exemptions, or later
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![Federal Register / Vol. 80, No. 212 / Tuesday, November 3, 2015 / Rules and Regulations 67623
contained herein. Therefore, because a reason to also consider that the neck- Inflatable Lap Belt Special Conditions
delay would significantly affect the injury potential would be higher for If inflatable lap belts are installed on
certification of the airplane, the FAA impacts below the airbag-device single-place side-facing seats, the lap
has determined that prior public notice deployment threshold. belts must meet Special Conditions no.
and comment are unnecessary and a. The Nij (calculated in accordance
25–187A–SC.
impracticable, and good cause exists for with 49 CFR 571.208) must be below
adopting these special conditions upon 1.0, where Nij =Fz/Fzc + My/Myc, and Nij Issued in Renton, Washington, on October
publication in the Federal Register. The critical values are: 28, 2015.
FAA is requesting comments to allow Michael Kaszycki,
i. Fzc = 1530 lb for tension
interested persons to submit views that ii. Fzc = 1385 lb for compression Acting Manager, Transport Airplane
may not have been submitted in iii. Myc = 229 lb-ft in flexion Directorate, Aircraft Certification Service.
response to the prior opportunities for iv. Myc = 100 lb-ft in extension [FR Doc. 2015–27936 Filed 11–2–15; 8:45 am]
comment described above. b. In addition, peak upper-neck Fz BILLING CODE 4910–13–P
List of Subjects in 14 CFR Part 25 must be below 937 lb of tension and 899
lb of compression.
Aircraft, Aviation safety, Reporting c. Rotation of the head about its DEPARTMENT OF TRANSPORTATION
and recordkeeping requirements. vertical axis, relative to the torso, is
The authority citation for these Federal Aviation Administration
limited to 105 degrees in either
special conditions is as follows: direction from forward-facing. 14 CFR Part 25
Authority: 49 U.S.C. 106(g), 40113, 44701, d. The neck must not impact any
44702, 44704. surface that would produce
[Docket No. FAA–2015–3368; Special
The Special Conditions concentrated loading on the neck. Conditions No. 25–603–SC]
■ Accordingly, pursuant to the authority 4. Spine and Torso Injury Criteria
Special Conditions: Embraer Model
delegated to me by the Administrator, a. The shoulders must remain aligned EMB–545 and EMB–550 Airplanes;
the following special conditions are with the hips throughout the impact Occupant Protection For Side-Facing
issued as part of the type certification sequence, or support for the upper torso Seats Forward of Aft-Facing Seats
basis for the Boeing Model 777–300ER must be provided to prevent forward or
airplane as modified by TIMCO lateral flailing beyond 45 degrees from AGENCY: Federal Aviation
Aerosystems. the vertical during significant spinal Administration (FAA), DOT.
loading. Alternatively, the lumbar spine ACTION: Final special conditions; request
Side-Facing Seats Special Conditions tension (Fz) cannot exceed 1200 lb. for comments.
In addition to the requirements of b. Significant concentrated loading on
§ 25.562: the occupant’s spine, in the area SUMMARY: These special conditions are
between the pelvis and shoulders issued for Embraer Model EMB–545 and
1. Head-Injury Criteria
during impact, including rebound, is EMB–550 airplanes. These airplanes
Compliance with § 25.562(c)(5) is not acceptable. During this type of will have a novel or unusual design
required, except that, if the contact, the interval for any rearward feature associated with a seat
anthropomorphic test device (ATD) has (X-direction) acceleration exceeding 20g configuration of side-facing seats
no apparent contact with the seat/ must be less than 3 milliseconds as positioned forward of aft-facing seats,
structure but has contact with an airbag, measured by the thoracic and with a structural armrest between
a head-injury criterion (HIC) unlimited instrumentation specified in 49 CFR the side-facing and aft-facing seats. The
score in excess of 1000 is acceptable, part 572, subpart E, filtered in applicable airworthiness regulations do
provided the HIC15 score (calculated in accordance with SAE International not contain adequate or appropriate
accordance with 49 CFR 571.208) for (SAE) J211–1. safety standards for this design feature.
that contact is less than 700. c. Occupant must not interact with These special conditions contain the
2. Body-to-Wall/Furnishing Contact the armrest or other seat components in additional safety standards that the
any manner significantly different than Administrator considers necessary to
If a seat is installed aft of structure would be expected for a forward-facing establish a level of safety equivalent to
(e.g., an interior wall or furnishing) that seat installation. that established by the existing
does not provide a homogenous contact 5. Longitudinal test(s), conducted to airworthiness standards.
surface for the expected range of measure the injury criteria above, must DATES: The effective date of these
occupants and yaw angles, then be performed with the FAA Hybrid III
additional analysis and/or test(s) may be special conditions is November 3, 2015.
ATD, as described in SAE 1999–01– We must receive your comments by
required to demonstrate that the injury 1609. The test(s) must be conducted
criteria are met for the area that an December 18, 2015.
with an undeformed floor, at the most- ADDRESSES: Send comments identified
occupant could contact. For example, if critical yaw case(s) for injury, and with
different yaw angles could result in by docket number FAA–2015–3368
all lateral structural supports (armrests/ using any of the following methods:
different airbag performance, then walls) installed.
additional analysis or separate test(s) • Federal eRegulations Portal: Go to
may be necessary to evaluate Note: TIMCO Aerosystems must http://www.regulations.gov/and follow
performance. demonstrate that the installation of seats via the online instructions for sending your
mstockstill on DSK4VPTVN1PROD with RULES
plinths or pallets meets all applicable comments electronically.
3. Neck Injury Criteria requirements. Compliance with the guidance • Mail: Send comments to Docket
contained in FAA Policy Memorandum PS–
The seating system must protect the ANM–100–2000–00123, dated February 2,
Operations, M–30, U.S. Department of
occupant from experiencing serious 2000, titled ‘‘Guidance for Demonstrating Transportation (DOT), 1200 New Jersey
neck injury. The assessment of neck Compliance with Seat Dynamic Testing for Avenue SE., Room W12–140, West
injury must be conducted with the Plinths and Pallets,’’ is acceptable to the Building Ground Floor, Washington, DC
airbag device activated, unless there is FAA. 20590–0001.
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Document Created: 2018-03-01 11:32:19
Document Modified: 2018-03-01 11:32:19
| 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 comments. | |
| Dates | The effective date of these special conditions is November 3, 2015. We must receive your comments by December 18, 2015. | |
| Contact | John Shelden, Airframe and Cabin Safety, ANM-115, Transport Airplane Directorate, Aircraft Certification Service, 1601 Lind Avenue SW., Renton, Washington 98057-3356; telephone 425-227-2785; facsimile 425-227-1149. | |
| FR Citation | 80 FR 67621 | |
| CFR Associated | Aircraft; Aviation Safety and Reporting and Recordkeeping Requirements |
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