Special Conditions: Dassault Aviation Model Falcon 6X Airplanes; Non-Rechargeable Lithium-Ion Battery Installations, 13127-13129 [2022-04935]
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Federal Register / Vol. 87, No. 46 / Wednesday, March 9, 2022 / Rules and Regulations
38. In § 785.10, revise paragraphs (a)
introductory text, (a)(1), (2), and (5), and
(b) to read as follows:
DEPARTMENT OF TRANSPORTATION
§ 785.10
14 CFR Part 25
■
Penalty for non-compliance.
(a) The Administrator is authorized to
withdraw the certification of a State’s
Certified Mediation Program, terminate
or suspend the grant to the State’s
Certified Mediation Program, require a
return of unspent grant funds, a
reimbursement of grant funds on
account of expenditures that are not
allowed, and may impose any other
penalties or sanctions authorized by law
if the Administrator determines that:
(1) The State’s Certified Mediation
Program, at any time, does not meet the
requirements in this part for
certification;
(2) The State’s Certified Mediation
Program is not being operated in a
manner consistent with the features of
the program as certified by FSA, with
the regulations in this part, or the grant
agreement;
*
*
*
*
*
(5) Reports submitted by a State on its
Certified Mediation Program as required
by § 785.8 are false, contain
misrepresentations or material
omissions, or are otherwise misleading.
(b) In the event that FSA gives notice
to the State of its intent to enforce any
withdrawal of certification or other
penalty for non-compliance, USDA
agencies will cease to participate in any
mediation conducted by the State’s
Certified Mediation Program
immediately upon delivery of such
notice to the State.
§ 785.11
[Amended]
39. In § 785.11, remove the words
‘‘State mediation program’’ and adding
‘‘State’s Certified Mediation Program’’
in their place wherever they appear.
■
§ 785.12
[Amended]
40. In § 785.12, remove the cross
reference ‘‘parts 15, 15b and 1901,
subpart E, of’’ and adding ‘‘parts 15 and
15b of’’ in their place.
■
Zach Ducheneaux,
Administrator, Farm Service Agency.
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Federal Aviation Administration
[Docket No. FAA–2017–1141; Special
Conditions No. 25–710A–SC]
Special Conditions: Dassault Aviation
Model Falcon 6X Airplanes; NonRechargeable Lithium-Ion Battery
Installations
Federal Aviation
Administration (FAA), DOT.
ACTION: Final special conditions,
amendment.
AGENCY:
These amended special
conditions are issued for nonrechargeable lithium-ion battery
installations on the Dassault Aviation
(Dassault) Model Falcon 6X airplane.
Non-rechargeable lithium-ion batteries
are a novel or unusual design feature
when compared to the state of
technology envisioned in the
airworthiness standards for transportcategory 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
Dassault on March 9, 2022.
FOR FURTHER INFORMATION CONTACT:
Nazih Khaouly, AIR–623, Aircraft
Systems Section, Technical Innovation
Policy Branch, Policy and Innovation
Division, Federal Aviation
Administration, 2200 S 216th Street,
Des Moines, Washington, 98198;
telephone and fax 206–231–3171, email
nazih.khaouly@faa.gov.
SUPPLEMENTARY INFORMATION:
SUMMARY:
Background
On July 1, 2012, Dassault applied for
special conditions for non-rechargeable
lithium-ion batteries installed in the
Model Falcon 5X airplane. Special
conditions were issued for that design
on January 16, 2018 (83 FR 2032).
However, Dassault has decided not to
release an airplane under the model
designation Falcon 5X, instead choosing
to change that model designation to
Falcon 6X.
In February of 2018, due to engine
supplier issues, Dassault extended the
type certificate application date for its
Model Falcon 5X airplane under new
Model Falcon 6X. This amendment to
the original special conditions reflects
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13127
the model-name change. This airplane is
a twin-engine business jet with seating
for 19 passengers and a maximum
takeoff weight of 77,460 pounds. The
Dassault Model Falcon 6X airplane
design remains unchanged from the
Model Falcon 5X in all material respects
other than different engines.
The FAA is issuing these special
conditions for non-rechargeable lithiumion battery installations on the Dassault
Model Falcon 6X airplane. The FAA’s
design standards in title 14, Code of
Federal Regulations (14 CFR) part 25 are
inadequate for addressing an airplane
with non-rechargeable lithium-ion
batteries.
Type Certification Basis
Under the provisions of 14 CFR 21.17,
Dassault must show that the Model
Falcon 6X airplane meets the applicable
provisions of part 25, as amended by
Amendments 25–1 through 25–146.
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 Dassault Model Falcon 6X
airplane because of a novel or unusual
design feature, special conditions are
prescribed under the provisions of
§ 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, these special conditions
would also apply to the other model
under § 21.101.
In addition to the applicable
airworthiness regulations and special
conditions, the Dassault Model Falcon
6X airplane must comply with the fuelvent and exhaust-emission requirements
of 14 CFR part 34, and the noisecertification requirements of 14 CFR
part 36.
The FAA issues special conditions, as
defined in 14 CFR 11.19, in accordance
with § 11.38, and they become part of
the type certification basis under
§ 21.17.
Novel or Unusual Design Feature
The Dassault Model Falcon 6X
airplane will incorporate the following
novel or unusual design feature:
Installation of non-rechargeable lithiumion batteries.
For the purpose of these special
conditions, the FAA refers 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
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Federal Register / Vol. 87, No. 46 / Wednesday, March 9, 2022 / Rules and Regulations
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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
§ 25.1353(b)(1) through (4). Nonrechargeable lithium-ion batteries are
novel and unusual with respect to the
state of technology considered when
these requirements were codified. Nonrechargeable lithium-ion 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 introduce
failure modes that require unique design
considerations, such as provisions for
thermal management.
In January 2013, two independent
events involving rechargeable lithiumion batteries revealed unanticipated
failure modes. A National
Transportation Safety Board (NTSB)
letter to the FAA, dated May 22, 2014,
which is available at https://
www.ntsb.gov, filename A–14–032–
036.pdf, describes these events.
On July 12, 2013, an event involving
a non-rechargeable lithium-ion 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.
These events involving rechargeable and
non-rechargeable lithium-ion batteries
prompted the FAA to initiate a broad
evaluation of these energy-storage
technologies.
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 Model GVI airplane.
Those were the first special conditions
the FAA issued for non-rechargeable
lithium-ion battery installations. In that
document, the FAA explained its
decision to make those special
conditions effective on April 22, 2017,
one year after publication in the Federal
Register. In those special conditions, the
FAA stated its intention to apply nonrechargeable lithium-ion battery special
conditions to design changes on other
airplane makes and models applied for
after this same date.
Special condition no. 1 of these
special conditions requires that each
individual cell within a non-
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rechargeable lithium-ion 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
increases in temperature or pressure
from one cell to adjacent cells.
Special condition nos. 1 and 2 are
intended to ensure that the nonrechargeable lithium-ion 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 selfexplanatory.
Special condition no. 4 makes it clear
that the flammable-fluid fire-protection
requirements of § 25.863 apply to nonrechargeable lithium-ion battery
installations. Section 25.863 is
applicable to areas of the airplane that
could be exposed to flammable-fluid
leakage from airplane systems. Nonrechargeable lithium-ion batteries
contain an electrolyte that is a
flammable fluid.
Special condition no. 5 requires that
each non-rechargeable lithium-ion
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-ion
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-ion battery
installations in lieu of § 25.1353(b)(1)
through (4) at Amendment 25–123.
Sections 25.1353(b)(1) through (4) at
Amendment 25–123 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
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that established by the existing
airworthiness standards.
Discussion of Comments
The FAA issued Final Special
Conditions, Request for Comment
Special Conditions No. 25–710–SC for
the Dassault Model Falcon 5X airplane,
which was published in the Federal
Register on January 16, 2018 (83 FR
2032). No comments were received, and
the special conditions are adopted as
proposed, with amendments.
Applicability
These special conditions are
applicable to the Dassault Model Falcon
6X airplane. Should Dassault 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-ion
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-ion
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 also are not applicable to
unchanged, previously certified nonrechargeable lithium-ion 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.
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.
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Federal Register / Vol. 87, No. 46 / Wednesday, March 9, 2022 / Rules and Regulations
RIN 2120–AA64
Examining the AD Docket
DEPARTMENT OF TRANSPORTATION
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 Dassault
Aviation Model Falcon 6X airplane.
Federal Aviation Administration
In lieu of § 25.1353(b)(1) through (4)
at Amendment 25–123, each nonrechargeable lithium-ion 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 § 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.
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[Docket No. FAA–2020–1073; Project
Identifier MCAI–2020–01303–A; Amendment
39–21964; AD 2022–05–12]
Airworthiness Products Section,
Operational Safety Branch, 901 Locust,
Kansas City, MO 64106. For information
on the availability of this material at the
FAA, call (817) 222–5110. It is also
available at https://www.regulations.gov
by searching for and locating Docket No.
FAA–2020–1073.
The Special Conditions
Non-Rechargeable Lithium-Ion Battery
Installations
Issued in Kansas City, Missouri, on March
3, 2022.
Patrick R. Mullen,
Manager, Technical Innovation Policy
Branch, Policy and Innovation Division,
Aircraft Certification Service.
[FR Doc. 2022–04935 Filed 3–8–22; 8:45 am]
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14 CFR Part 39
Airworthiness Directives; Embraer S.A.
(Type Certificate Previously Held by
Empresa Brasileira de Aerona´utica
S.A.) Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
AGENCY:
The FAA is superseding
Airworthiness Directive (AD) 2020–12–
08 for all Embraer S.A. Model EMB–505
airplanes. AD 2020–12–08 required
inspections of the mass-balance weights
of the elevators, ailerons, and rudder
(flight control surfaces) and their
attachment parts, and corrective actions
if necessary, and revising the
airworthiness limitation section (ALS)
of the maintenance manual or
instructions for continued airworthiness
to incorporate new airworthiness
limitations. This AD retains the actions
required by AD 2020–12–08 and
requires, for certain airplanes, cleaning
and weighing certain mass-balances and
installation or replacement, as
applicable; and for certain other massbalances for certain airplanes,
replacement of those mass-balances.
This AD was prompted by a
determination that new applicable
airplane serial numbers and new criteria
for the replacement of affected parts are
necessary. The FAA is issuing this AD
to address the unsafe condition on these
products.
DATES: This AD is effective April 13,
2022.
The Director of the Federal Register
approved the incorporation by reference
of certain publications listed in this AD
as of April 13, 2022.
The Director of the Federal Register
approved the incorporation by reference
of a certain other publication listed in
this AD as of July 1, 2020 (85 FR 36312,
June 16, 2020).
ADDRESSES: For service information
identified in this final rule, contact
Phenom Maintenance Support, Avenida
Brigadeiro Faria Lima, 2170, P.O. Box
36/2, Sa˜o Jose´ dos Campos, 12227–901,
Brazil; phone: +55 12 3927 1000; email:
phenom.reliability@embraer.com.br;
website: https://www.embraer.com.br/
en-US/Pages/home.aspx. You may view
this service information at the FAA,
SUMMARY:
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You may examine the AD docket at
https://www.regulations.gov by
searching for and locating Docket No.
FAA–2020–1073; or in person at Docket
Operations between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal
holidays. The AD docket contains this
AD, the mandatory continuing
airworthiness information (MCAI), any
comments received, and other
information. The address for Docket
Operations is Document Operations,
U.S. Department of Transportation,
Docket Operations, M–30, West
Building Ground Floor, Room W12–140,
1200 New Jersey Avenue SE,
Washington, DC 20590.
FOR FURTHER INFORMATION CONTACT: Jim
Rutherford, Aerospace Engineer,
General Aviation & Rotorcraft Section,
International Validation Branch, FAA,
901 Locust, Room 301, Kansas City, MO
64106; phone: (816) 329–4165; email:
jim.rutherford@faa.gov.
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 to supersede AD 2020–12–08,
Amendment 39–21143 (85 FR 36312,
June 16, 2020), (AD 2020–12–08). AD
2020–12–08 applied to all Embraer S.A.
(type certificate previously held by
Empresa Brasileira de Aerona´utica S.A.)
Model EMB–505 airplanes and required
for certain serial-numbered airplanes,
inspecting the mass-balance weights of
the flight control surfaces and their
attachment parts for corrosion and
fragmentation, and taking corrective
actions if necessary, including sending
inspection results to Embraer. For all
airplanes, AD 2020–12–08 required
revising the airworthiness limitation
section of the maintenance manual or
instructions for continued airworthiness
to incorporate new airworthiness
limitations.
The NPRM published in the Federal
Register on September 9, 2021 (86 FR
50487). The NPRM was prompted by
Brazilian AD 2020–09–01, dated
September 8, 2020 (referred to after this
as ‘‘the MCAI’’), issued by the Ageˆncia
Nacional de Aviac
¸a˜o Civil (ANAC),
which is the aviation authority for
Brazil. The MCAI states:
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]]>Agencies
[Federal Register Volume 87, Number 46 (Wednesday, March 9, 2022)]
[Rules and Regulations]
[Pages 13127-13129]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2022-04935]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 25
[Docket No. FAA-2017-1141; Special Conditions No. 25-710A-SC]
Special Conditions: Dassault Aviation Model Falcon 6X Airplanes;
Non-Rechargeable Lithium-Ion Battery Installations
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final special conditions, amendment.
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SUMMARY: These amended special conditions are issued for non-
rechargeable lithium-ion battery installations on the Dassault Aviation
(Dassault) Model Falcon 6X airplane. Non-rechargeable lithium-ion
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 Dassault on March 9, 2022.
FOR FURTHER INFORMATION CONTACT: Nazih Khaouly, AIR-623, Aircraft
Systems Section, Technical Innovation Policy Branch, Policy and
Innovation Division, Federal Aviation Administration, 2200 S 216th
Street, Des Moines, Washington, 98198; telephone and fax 206-231-3171,
email [email protected].
SUPPLEMENTARY INFORMATION:
Background
On July 1, 2012, Dassault applied for special conditions for non-
rechargeable lithium-ion batteries installed in the Model Falcon 5X
airplane. Special conditions were issued for that design on January 16,
2018 (83 FR 2032). However, Dassault has decided not to release an
airplane under the model designation Falcon 5X, instead choosing to
change that model designation to Falcon 6X.
In February of 2018, due to engine supplier issues, Dassault
extended the type certificate application date for its Model Falcon 5X
airplane under new Model Falcon 6X. This amendment to the original
special conditions reflects the model-name change. This airplane is a
twin-engine business jet with seating for 19 passengers and a maximum
takeoff weight of 77,460 pounds. The Dassault Model Falcon 6X airplane
design remains unchanged from the Model Falcon 5X in all material
respects other than different engines.
The FAA is issuing these special conditions for non-rechargeable
lithium-ion battery installations on the Dassault Model Falcon 6X
airplane. The FAA's design standards in title 14, Code of Federal
Regulations (14 CFR) part 25 are inadequate for addressing an airplane
with non-rechargeable lithium-ion batteries.
Type Certification Basis
Under the provisions of 14 CFR 21.17, Dassault must show that the
Model Falcon 6X airplane meets the applicable provisions of part 25, as
amended by Amendments 25-1 through 25-146.
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 Dassault Model Falcon 6X 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, 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 Dassault Model Falcon 6X 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. 21.17.
Novel or Unusual Design Feature
The Dassault Model Falcon 6X airplane will incorporate the
following novel or unusual design feature: Installation of non-
rechargeable lithium-ion batteries.
For the purpose of these special conditions, the FAA refers 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
[[Page 13128]]
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-ion
batteries are novel and unusual with respect to the state of technology
considered when these requirements were codified. Non-rechargeable
lithium-ion 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
introduce failure modes that require unique design considerations, such
as provisions for thermal management.
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 https://www.ntsb.gov, filename A-14-032-
036.pdf, describes these events.
On July 12, 2013, an event involving a non-rechargeable lithium-ion
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. These
events involving rechargeable and non-rechargeable lithium-ion
batteries prompted the FAA to initiate a broad evaluation of these
energy-storage technologies.
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 Model GVI airplane. Those were the first
special conditions the FAA issued for non-rechargeable lithium-ion
battery installations. In that document, the FAA explained its decision
to make those special conditions effective on April 22, 2017, one year
after publication in the Federal Register. In those special conditions,
the FAA stated its intention to apply non-rechargeable lithium-ion
battery special conditions to design changes on other airplane makes
and models applied for after this same date.
Special condition no. 1 of these special conditions requires that
each individual cell within a non-rechargeable lithium-ion 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 increases in
temperature or pressure from one cell to adjacent cells.
Special condition nos. 1 and 2 are intended to ensure that the non-
rechargeable lithium-ion 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-ion 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-ion batteries contain
an electrolyte that is a flammable fluid.
Special condition no. 5 requires that each non-rechargeable
lithium-ion 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-ion 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-ion
battery installations in lieu of Sec. 25.1353(b)(1) through (4) at
Amendment 25-123. Sections 25.1353(b)(1) through (4) at Amendment 25-
123 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.
Discussion of Comments
The FAA issued Final Special Conditions, Request for Comment
Special Conditions No. 25-710-SC for the Dassault Model Falcon 5X
airplane, which was published in the Federal Register on January 16,
2018 (83 FR 2032). No comments were received, and the special
conditions are adopted as proposed, with amendments.
Applicability
These special conditions are applicable to the Dassault Model
Falcon 6X airplane. Should Dassault 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-ion 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-ion 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
also are not applicable to unchanged, previously certified non-
rechargeable lithium-ion 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.
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.
[[Page 13129]]
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 Dassault Aviation Model Falcon 6X
airplane.
Non-Rechargeable Lithium-Ion Battery Installations
In lieu of Sec. 25.1353(b)(1) through (4) at Amendment 25-123,
each non-rechargeable lithium-ion 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 Kansas City, Missouri, on March 3, 2022.
Patrick R. Mullen,
Manager, Technical Innovation Policy Branch, Policy and Innovation
Division, Aircraft Certification Service.
[FR Doc. 2022-04935 Filed 3-8-22; 8:45 am]
BILLING CODE 4910-13-P
