Special Conditions: Bombardier Inc., Models BD-500-1A10 and BD-500-1A11 Series Airplanes; Fuselage Post-Crash Fire Survivability, 9379-9380 [2014-03585]
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9379
Rules and Regulations
Federal Register
Vol. 79, No. 33
Wednesday, February 19, 2014
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.
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 25
[Docket No. FAA–2013–0858; Special
Conditions No. 25–518–SC]
Special Conditions: Bombardier Inc.,
Models BD–500–1A10 and BD–500–
1A11 Series Airplanes; Fuselage PostCrash Fire Survivability
Federal Aviation
Administration (FAA), DOT.
ACTION: Final special conditions.
AGENCY:
These special conditions are
issued for the Bombardier Inc. Models
BD–500–1A10 and BD–500–1A11 series
airplanes. These airplanes will have
novel or unusual design features when
compared to the state of technology
envisioned in the airworthiness
standards for transport category
airplanes. These features are associated
with an aluminum-lithium fuselage
construction that may provide different
levels of protection from post-crash fire
threats than similar aircraft constructed
from traditional aluminum structure.
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: Effective Date: March 21, 2014.
FOR FURTHER INFORMATION CONTACT:
Alan Sinclair, FAA, Airframe and Cabin
Safety Branch, ANM–115, Transport
Airplane Directorate, Aircraft
Certification Service, 1601 Lind Avenue
SW., Renton, Washington, 98057–3356;
telephone (425) 227–2195; facsimile
(425) 227–1232.
SUPPLEMENTARY INFORMATION:
ehiers on DSK2VPTVN1PROD with RULES
SUMMARY:
VerDate Mar<15>2010
14:22 Feb 18, 2014
Jkt 232001
Background
On December 10, 2009, Bombardier
Inc. applied for a type certificate for
their new Models BD–500–1A10 and
BD–500–1A11 series airplanes (hereafter
collectively referred to as ‘‘C-series’’).
The C-series airplanes are swept-wing
monoplanes with an aluminum alloy
fuselage sized for 5-abreast seating.
Passenger capacity is designated as 110
for the Model BD–500–1A10 and 125 for
the Model BD–500–1A11. Maximum
takeoff weight is 131,000 pounds for the
Model BD–500–1A10 and 144,000
pounds for the Model BD–500–1A11.
The fuselage of the Bombardier Cseries airplanes will be fabricated using
aluminum-lithium construction.
Structures fabricated from aluminumlithium may provide different levels of
protection from post-crash fuel-fed fire
threats than similar aircraft with
traditional aluminum structure.
There are no existing regulations that
adequately ensure that aluminumlithium structure offers passengers the
same protection from a post-crash fire
condition as would a conventional
aluminum structure. These special
conditions are necessary to ensure that
the Bombardier C-series airplanes
provide a level of safety equivalent to
that provided by Title 14, Code of
Federal Regulations (14 CFR) part 25.
Type Certification Basis
Under the provisions of Title 14, Code
of Federal Regulations (14 CFR) 21.17,
Bombardier Inc. must show that the Cseries airplanes meet the applicable
provisions of part 25, as amended by
Amendment 25–1 through 25–129
thereto.
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 C-series airplanes 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 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, the special conditions
would also apply to the other model
under § 21.101.
In addition to the applicable
airworthiness regulations and special
PO 00000
Frm 00001
Fmt 4700
Sfmt 4700
conditions, the C-series airplanes 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; and the
FAA must issue a finding of regulatory
adequacy under § 611 of Public Law 92–
574, the ‘‘Noise Control Act of 1972.’’
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(a)(2).
Novel or Unusual Design Features
The Bombardier C-series airplanes
will incorporate the following novel or
unusual design features: The fuselage
will be fabricated using aluminumlithium materials instead of
conventional aluminum.
The performance of airplanes
consisting of a conventional aluminum
fuselage is understood based on service
history and extensive intermediate and
large-scale fire testing. The new
aluminum-lithium materials must
provide the same levels of protection
against post-crash fuel-fed fire threats.
Discussion
The certification basis for the
Bombardier C-series airplanes includes
meeting the burn through requirements
defined in § 25.856(b). The Bombardier
C-series airplanes are introducing a new
material from what has traditionally
been shown to be survivable from a
toxic standpoint. Toxicity levels from
post-crash fire threats are typically more
severe than threats generated from an
in-flight fire with regards to the quantity
level of toxins produced by off-gases
from burning materials. Therefore, it is
necessary to ensure that the material
being used does not introduce a new
hazard that would reduce the
survivability of the passengers during a
post-crash situation, or produce levels
of toxic fumes that would be lethal or
incapacitating, thus preventing
evacuation of the aircraft in a crash
scenario.
Bombardier Inc. will have to
demonstrate that aluminum-lithium
material does not produce levels of toxic
fumes that will reduce the survivability
of the passengers or their ability to
evacuate when compared to typically
constructed aluminum airplanes.
A way of showing acceptable
capability is to conduct a laboratoryscale test to assess the survivability
E:\FR\FM\19FER1.SGM
19FER1
9380
Federal Register / Vol. 79, No. 33 / Wednesday, February 19, 2014 / Rules and Regulations
characteristics of this non-traditional
fuselage material. If negligible amounts
of combustion products are produced in
this test, the material can be considered
acceptable with respect to post crash
survivability. A test method developed
by the FAA’s William J. Hughes
Technical Center should be used (Ref.
DOT/FAA/AR–TN07/15 dated August
2008).
Related regulations, including
§§ 25.853 and 25.856(a), remain valid
for this airplane, but they do not reflect
the potential threat generated from toxic
levels of gases produced from
aluminum-lithium materials.
constructed aluminum airplane exposed
to a post-crash fuel-fed fire.
Issued in Renton, Washington, on January
22, 2014.
Jeffrey E. Duven,
Manager, Transport Airplane Directorate,
Aircraft Certification Service.
[FR Doc. 2014–03585 Filed 2–18–14; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 25
Discussion of Comments
Notice of proposed special conditions
No. 25–13–08–SC for the Bombardier Cseries airplanes was published in the
Federal Register on October 31, 2013
(78 FR 65233). No comments were
received, and the special conditions are
adopted as proposed.
[Docket No. FAA–2013–0819; Special
Conditions No. 25–519–SC]
Special Conditions: Bombardier Inc.,
Models BD–500–1A10 and BD–500–
1A11 Series Airplanes; Fuselage InFlight Fire Safety and Flammability
Resistance
Applicability
As discussed above, these special
conditions are applicable to the Models
BD–500–1A10 and BD–500–1A11 series
airplanes. Should Bombardier Inc. apply
at a later date for a change to the type
certificate to include another model on
the same type certificate incorporating
the same novel or unusual design
feature, the special conditions would
apply to that model as well.
Conclusion
This action affects only certain novel
or unusual design features on two
model series of airplanes. It is not a rule
of general applicability.
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.
ehiers on DSK2VPTVN1PROD with RULES
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 Bombardier Inc.
Models BD–500–1A10 and BD–500–
1A11 (C-series) airplanes.
Fuselage Post-Crash Fire
Survivability. The Bombardier C-series
airplanes must show that any toxic
levels of gases produced from the
aluminum-lithium material are in no
way an additional threat to the
passengers and their ability to evacuate
when compared to a typically
VerDate Mar<15>2010
14:22 Feb 18, 2014
Jkt 232001
Federal Aviation
Administration (FAA), DOT.
ACTION: Final special conditions.
AGENCY:
These special conditions are
issued for the Bombardier Inc. Models
BD–500–1A10 and BD–500–1A11 series
airplanes. These airplanes will have
novel or unusual design features when
compared to the state of technology
envisioned in the airworthiness
standards for transport category
airplanes. These features are associated
with the materials used to fabricate the
fuselage, which may affect fire
propagation during an in-flight fire. 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: Effective Date: March 21, 2014.
FOR FURTHER INFORMATION CONTACT:
Alan Sinclair, FAA, Airframe and Cabin
Safety Branch, ANM–115, Transport
Airplane Directorate, Aircraft
Certification Service, 1601 Lind Avenue
SW., Renton, Washington 98057–3356;
telephone 425–227–2195; facsimile
425–227–1232.
SUPPLEMENTARY INFORMATION:
SUMMARY:
Background
On December 10, 2009, Bombardier
Inc. applied for a type certificate for
their new Models BD–500–1A10 and
BD–500–1A1 series airplanes (hereafter
collectively referred to as ‘‘C-series’’).
The C-series airplanes are swept-wing
PO 00000
Frm 00002
Fmt 4700
Sfmt 4700
monoplanes with an aluminum alloy
fuselage sized for 5-abreast seating.
Passenger capacity is designated as 110
for the Model BD–500–1A10 and 125 for
the Model BD–500–1A11. Maximum
takeoff weight is 131,000 pounds for the
Model BD–500–1A10 and 144,000
pounds for the Model BD–500–1A11.
The Bombardier C-series airplanes
will be fabricated using aluminumlithium materials. The performance of
airplanes consisting of a conventional
aluminum fuselage in an inaccessible
in-flight fire scenario is understood
based on service history and extensive
intermediate and large-scale fire testing.
The fuselage itself does not contribute to
in-flight fire propagation. This may not
be the case for an all-aluminum-lithium
fuselage. Experience has shown that
eliminating the fire propagation of the
interior materials and insulation
materials tends to increase survivability
since other aspects of in-flight fire safety
(e.g., toxic gas emission and smoke
obscuration) are typically by-products of
the propagating fire. The Bombardier Cseries airplanes must provide protection
against an in-flight fire propagating
along the surface of the fuselage.
Type Certification Basis
Under the provisions of Title 14, Code
of Federal Regulations (14 CFR) 21.17,
Bombardier Inc. must show that the Cseries airplanes meet the applicable
provisions of part 25, as amended by
Amendment 25–1 through 25–129
thereto.
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 C-series airplanes 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 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, the special conditions
would also apply to the other model
under § 21.101.
In addition to the applicable
airworthiness regulations and special
conditions, the C-series airplanes 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; and the
FAA must issue a finding of regulatory
adequacy under § 611 of Public Law 92–
574, the ‘‘Noise Control Act of 1972.’’
The FAA issues special conditions, as
defined in 14 CFR 11.19, in accordance
with § 11.38, and they become part of
E:\FR\FM\19FER1.SGM
19FER1
]]>Agencies
[Federal Register Volume 79, Number 33 (Wednesday, February 19, 2014)]
[Rules and Regulations]
[Pages 9379-9380]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2014-03585]
========================================================================
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. 79, No. 33 / Wednesday, February 19, 2014 /
Rules and Regulations
[[Page 9379]]
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 25
[Docket No. FAA-2013-0858; Special Conditions No. 25-518-SC]
Special Conditions: Bombardier Inc., Models BD-500-1A10 and BD-
500-1A11 Series Airplanes; Fuselage Post-Crash Fire Survivability
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final special conditions.
-----------------------------------------------------------------------
SUMMARY: These special conditions are issued for the Bombardier Inc.
Models BD-500-1A10 and BD-500-1A11 series airplanes. These airplanes
will have novel or unusual design features when compared to the state
of technology envisioned in the airworthiness standards for transport
category airplanes. These features are associated with an aluminum-
lithium fuselage construction that may provide different levels of
protection from post-crash fire threats than similar aircraft
constructed from traditional aluminum structure. 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: Effective Date: March 21, 2014.
FOR FURTHER INFORMATION CONTACT: Alan Sinclair, FAA, Airframe and Cabin
Safety Branch, ANM-115, Transport Airplane Directorate, Aircraft
Certification Service, 1601 Lind Avenue SW., Renton, Washington, 98057-
3356; telephone (425) 227-2195; facsimile (425) 227-1232.
SUPPLEMENTARY INFORMATION:
Background
On December 10, 2009, Bombardier Inc. applied for a type
certificate for their new Models BD-500-1A10 and BD-500-1A11 series
airplanes (hereafter collectively referred to as ``C-series''). The C-
series airplanes are swept-wing monoplanes with an aluminum alloy
fuselage sized for 5-abreast seating. Passenger capacity is designated
as 110 for the Model BD-500-1A10 and 125 for the Model BD-500-1A11.
Maximum takeoff weight is 131,000 pounds for the Model BD-500-1A10 and
144,000 pounds for the Model BD-500-1A11.
The fuselage of the Bombardier C-series airplanes will be
fabricated using aluminum-lithium construction. Structures fabricated
from aluminum-lithium may provide different levels of protection from
post-crash fuel-fed fire threats than similar aircraft with traditional
aluminum structure.
There are no existing regulations that adequately ensure that
aluminum-lithium structure offers passengers the same protection from a
post-crash fire condition as would a conventional aluminum structure.
These special conditions are necessary to ensure that the Bombardier C-
series airplanes provide a level of safety equivalent to that provided
by Title 14, Code of Federal Regulations (14 CFR) part 25.
Type Certification Basis
Under the provisions of Title 14, Code of Federal Regulations (14
CFR) 21.17, Bombardier Inc. must show that the C-series airplanes meet
the applicable provisions of part 25, as amended by Amendment 25-1
through 25-129 thereto.
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 C-series airplanes 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 type certificate for that model be amended
later to include any other model that incorporates the same novel or
unusual design feature, the special conditions would also apply to the
other model under Sec. 21.101.
In addition to the applicable airworthiness regulations and special
conditions, the C-series airplanes 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; and the FAA must issue a
finding of regulatory adequacy under Sec. 611 of Public Law 92-574,
the ``Noise Control Act of 1972.''
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(a)(2).
Novel or Unusual Design Features
The Bombardier C-series airplanes will incorporate the following
novel or unusual design features: The fuselage will be fabricated using
aluminum-lithium materials instead of conventional aluminum.
The performance of airplanes consisting of a conventional aluminum
fuselage is understood based on service history and extensive
intermediate and large-scale fire testing. The new aluminum-lithium
materials must provide the same levels of protection against post-crash
fuel-fed fire threats.
Discussion
The certification basis for the Bombardier C-series airplanes
includes meeting the burn through requirements defined in Sec.
25.856(b). The Bombardier C-series airplanes are introducing a new
material from what has traditionally been shown to be survivable from a
toxic standpoint. Toxicity levels from post-crash fire threats are
typically more severe than threats generated from an in-flight fire
with regards to the quantity level of toxins produced by off-gases from
burning materials. Therefore, it is necessary to ensure that the
material being used does not introduce a new hazard that would reduce
the survivability of the passengers during a post-crash situation, or
produce levels of toxic fumes that would be lethal or incapacitating,
thus preventing evacuation of the aircraft in a crash scenario.
Bombardier Inc. will have to demonstrate that aluminum-lithium
material does not produce levels of toxic fumes that will reduce the
survivability of the passengers or their ability to evacuate when
compared to typically constructed aluminum airplanes.
A way of showing acceptable capability is to conduct a laboratory-
scale test to assess the survivability
[[Page 9380]]
characteristics of this non-traditional fuselage material. If
negligible amounts of combustion products are produced in this test,
the material can be considered acceptable with respect to post crash
survivability. A test method developed by the FAA's William J. Hughes
Technical Center should be used (Ref. DOT/FAA/AR-TN07/15 dated August
2008).
Related regulations, including Sec. Sec. 25.853 and 25.856(a),
remain valid for this airplane, but they do not reflect the potential
threat generated from toxic levels of gases produced from aluminum-
lithium materials.
Discussion of Comments
Notice of proposed special conditions No. 25-13-08-SC for the
Bombardier C-series airplanes was published in the Federal Register on
October 31, 2013 (78 FR 65233). No comments were received, and the
special conditions are adopted as proposed.
Applicability
As discussed above, these special conditions are applicable to the
Models BD-500-1A10 and BD-500-1A11 series airplanes. Should Bombardier
Inc. apply at a later date for a change to the type certificate to
include another model on the same type certificate incorporating the
same novel or unusual design feature, the special conditions would
apply to that model as well.
Conclusion
This action affects only certain novel or unusual design features
on two model series of airplanes. It is not a rule of general
applicability.
List of Subjects in 14 CFR Part 25
Aircraft, Aviation safety, Reporting and recordkeeping
requirements.
The authority citation for these special conditions is as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701, 44702, 44704.
The Special Conditions
Accordingly, pursuant to the authority delegated to me by the
Administrator, the following special conditions are issued as part of
the type certification basis for Bombardier Inc. Models BD-500-1A10 and
BD-500-1A11 (C-series) airplanes.
Fuselage Post-Crash Fire Survivability. The Bombardier C-series
airplanes must show that any toxic levels of gases produced from the
aluminum-lithium material are in no way an additional threat to the
passengers and their ability to evacuate when compared to a typically
constructed aluminum airplane exposed to a post-crash fuel-fed fire.
Issued in Renton, Washington, on January 22, 2014.
Jeffrey E. Duven,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2014-03585 Filed 2-18-14; 8:45 am]
BILLING CODE 4910-13-P
