Rule2023-15177
Airworthiness Directives; Bombardier, Inc., Airplanes
Primary source
Metadata and text below are from the Federal Register, a public-domain U.S. government work. Always verify the official published version before relying on it for any legal matter.
Published
July 19, 2023
Effective
August 23, 2023
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-2B16 (604 Variant) airplanes. This AD was prompted by reports of oxygen leaks caused by cracked, brittle, or broken oxygen hoses that were found during scheduled maintenance tests of the airplane oxygen system. This AD requires replacing oxygen system hoses having any part number in the O2C20T1 and O2C20T14 series. This AD also prohibits installation of affected oxygen hoses. The FAA is issuing this AD to address the unsafe condition on these products.
Full Text
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<title>Federal Register, Volume 88 Issue 137 (Wednesday, July 19, 2023)</title>
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[Federal Register Volume 88, Number 137 (Wednesday, July 19, 2023)]
[Rules and Regulations]
[Pages 46063-46066]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2023-15177]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2023-0025; Project Identifier MCAI-2022-00804-T;
Amendment 39-22479; AD 2023-12-20]
RIN 2120-AA64
Airworthiness Directives; Bombardier, Inc., Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for
certain Bombardier, Inc., Model CL-600-2B16 (604 Variant) airplanes.
This AD was prompted by reports of oxygen leaks caused by cracked,
brittle, or broken oxygen hoses that were found during scheduled
maintenance tests of the airplane oxygen system. This AD requires
replacing oxygen system hoses having any part number in the O2C20T1 and
O2C20T14 series. This AD also prohibits installation of affected oxygen
hoses. The FAA is issuing this AD to address the unsafe condition on
these products.
DATES: This AD is effective August 23, 2023.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of August 23,
2023.
ADDRESSES:
AD Docket: You may examine the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2023-0025; 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 final rule, the mandatory continuing airworthiness
information (MCAI), any comments received, and other information. The
address for Docket Operations is U.S. Department of Transportation,
Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200
New Jersey Avenue SE, Washington, DC 20590.
Material Incorporated by Reference:
<bullet> For service information identified in this final rule,
contact Bombardier Business Aircraft Customer Response Center, 400
C[ocirc]te-Vertu Road West, Dorval, Qu[eacute]bec H4S 1Y9, Canada;
telephone 514-855-2999; email <a href="/cdn-cgi/l/email-protection#dbbab8f5a2aeb79bbabea9b4f5e7bafbb3a9bebde6" http: bombardier.com">bombardier.com</a>">ac.yul@aero.<a href="http://bombardier.com">bombardier.com</a></a>; website
<a href="http://bombardier.com">bombardier.com</a>.
<bullet> You may view this service information at the FAA,
Airworthiness Products Section, Operational Safety Branch, 2200 South
216th St., Des Moines, WA. For information on the availability of this
material at the FAA, call 206-231-3195. It is also available at
<a href="http://regulations.gov">regulations.gov</a> under Docket No. FAA-2023-0025.
FOR FURTHER INFORMATION CONTACT: Elizabeth Dowling, Aviation Safety
Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
telephone 516-228-7300; email <a href="/cdn-cgi/l/email-protection#ad9480ccdbde80c3d4cccec280cec2deedcbcccc83cac2db"><span class="__cf_email__" data-cfemail="dce5f1bdaaaff1b2a5bdbfb3f1bfb3af9cbabdbdf2bbb3aa">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 by adding an AD that would apply to certain Bombardier,
Inc., Model CL-600-2B16 (604 Variant) airplanes. The NPRM published in
the Federal Register on January 30, 2023 (88 FR 5819). The NPRM was
prompted by AD CF-2022-34, dated June 20, 2022, issued by Transport
Canada, which is the aviation authority for Canada (referred to after
this as the MCAI). The MCAI states oxygen leaks were caused by cracked,
brittle, or broken oxygen hoses that were found during scheduled
maintenance tests of the airplane oxygen system. A leak in the oxygen
system may result in failure to provide oxygen to passengers and crew
and result in an oxygen-enriched atmosphere creating a fire risk on the
airplane. See the MCAI for additional background information.
In the NPRM, the FAA proposed to require replacing oxygen system
hoses having any part number in the O2C20T1 and O2C20T14 series and to
prohibit installation of affected oxygen hoses. The FAA is issuing this
AD to address the unsafe condition on these products.
You may examine the MCAI in the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2023-0025.
Discussion of Final Airworthiness Directive
Comments
The FAA received comments from one commenter, NetJets. The
following presents the comments received on the NPRM and the FAA's
response to each comment.
Request to Correct Reference To Test
The commenter noted that paragraph (h)(2) of the proposed AD
referenced a test specified in paragraph (h)(2) of the proposed AD, but
the test was specified in paragraph (h)(1) of the proposed AD. The
commenter suggested the FAA revise paragraph (h)(2) of the proposed AD
to read, ``If, during a test specified in paragraph (h)(1) of this AD.
. . .''
[[Page 46064]]
The FAA agrees and has revised paragraph (h)(2) of this AD.
Request To Revise Compliance Time
The commenter stated that the compliance time specified in
paragraph (g)(2) of the proposed AD, which reads, ``For airplanes
having, as of the effective date of this AD, more than 6 years from the
completion of the interior modification specified in STC T02355NY:
Within 7 months after the effective date of this AD,'' does not
consider the current supply chain issues and may cause undue hardship
for owners/operators with multiple aircraft in its fleet. The commenter
suggested that if parts are not available at the replacement time
specified, there should be an alternative method to extend the
replacement time for those aircraft.
The FAA disagrees. The FAA determined that the compliance time in
paragraph (g)(2) of this AD allows ample time to obtain replacement
parts. The FAA has not changed this AD as a result of this comment.
Conclusion
This product has been approved by the aviation authority of another
country and is approved for operation in the United States. Pursuant to
the FAA's bilateral agreement with this State of Design Authority, it
has notified the FAA of the unsafe condition described in the MCAI
referenced above. The FAA reviewed the relevant data, considered the
comments received, and determined that air safety requires adopting
this AD as proposed. Accordingly, the FAA is issuing this AD to address
the unsafe condition on this product. Except for minor editorial
changes, and any other changes described previously, this AD is adopted
as proposed in the NPRM. None of the changes will increase the economic
burden on any operator.
Related Service Information Under 1 CFR Part 51
The FAA reviewed Bombardier Service Bulletin 605-35-006, Revision
01, dated January 28, 2022. This service information specifies
procedures for replacing oxygen system hoses having any part number in
the O2C20T1 and O2C20T14 series.
The FAA also reviewed Bombardier Service Bulletin 650-35-002,
Revision 01, dated January 28, 2022. This service information specifies
procedures for replacing oxygen system hoses having any part number in
the O2C20T1 series. This service information also specifies optional
mitigating actions for certain airplanes (repetitive testing until
affected parts are replaced).
This service information is reasonably available because the
interested parties have access to it through their normal course of
business or by the means identified in the ADDRESSES section.
Costs of Compliance
The FAA estimates that this AD affects 42 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this AD:
Estimated Costs for Required Actions
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Cost per Cost on U.S.
Labor cost Parts cost product operators
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3 work-hours x $85 per hour = $255........................... $100 $355 $14,910
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Estimated Costs for Optional Actions
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Cost per
Labor cost Parts cost product
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1 work-hour x $85 per hour = $85...... $0 $85
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The FAA estimates the following costs to do any necessary on-
condition actions that would be required based on the results of any
optional mitigating actions. The FAA has no way of determining the
number of aircraft that might need this on-condition action:
Estimated Costs of On-Condition Actions
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Cost per
Labor cost Parts cost product
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3 work-hours x $85 per hour = $255.... $100 $355
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The FAA has included all known costs in its cost estimate.
According to the manufacturer, however, some or all of the costs of
this AD may be covered under warranty, thereby reducing the cost impact
on affected operators.
Authority for This Rulemaking
Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. Subtitle VII: Aviation Programs,
describes in more detail the scope of the Agency's authority.
The FAA is issuing this rulemaking under the authority described in
Subtitle VII, Part A, Subpart III, Section 44701: General requirements.
Under that section, Congress charges the FAA with promoting safe flight
of civil aircraft in air commerce by prescribing regulations for
practices, methods, and procedures the Administrator finds necessary
for safety in air commerce. This regulation is within the scope of that
authority because it addresses an unsafe condition that is likely to
exist or develop on products identified in this rulemaking action.
Regulatory Findings
This AD will not have federalism implications under Executive Order
13132. This AD will not have a substantial direct effect on the States,
on the relationship between the national government and the States, or
on the
[[Page 46065]]
distribution of power and responsibilities among the various levels of
government.
For the reasons discussed above, I certify that this AD:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Will not affect intrastate aviation in Alaska, and
(3) Will not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
The Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA amends 14 CFR part 39 as follows:
PART 39--AIRWORTHINESS DIRECTIVES
0
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
Sec. 39.13 [Amended]
0
2. The FAA amends Sec. 39.13 by adding the following new airworthiness
directive:
2023-12-20 Bombardier, Inc.: Amendment 39-22479; Docket No. FAA-
2023-0025; Project Identifier MCAI-2022-00804-T.
(a) Effective Date
This airworthiness directive (AD) is effective August 23, 2023.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Bombardier, Inc., Model CL-600-2B16 (604
Variant) airplanes, certificated in any category, serial numbers
5701 through 5990 inclusive, and 6050 through 6162 inclusive, with
an interior modified in accordance with Supplemental Type
Certificate (STC) ST02355NY.
(d) Subject
Air Transport Association (ATA) of America Code 35, Oxygen.
(e) Unsafe Condition
This AD was prompted by reports of oxygen leaks caused by
cracked, brittle, or broken oxygen hoses that were found during
scheduled maintenance tests of the airplane oxygen system. The FAA
is issuing this AD to address a leak in the oxygen system. The
unsafe condition, if not addressed, could result in failure to
provide oxygen to passengers and crew and result in an oxygen-
enriched atmosphere creating a fire risk on the airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Replacement
At the applicable compliance times specified in paragraphs
(g)(1) and (2) of this AD: Replace oxygen system hoses having any
part number in the O2C20T1 series, and, as applicable, the O2C20T14
series, in accordance with the Accomplishment Instructions of the
applicable service information specified in figure 1 to paragraph
(g) of this AD.
(1) For airplanes having, as of the effective date of this AD, 6
years or less from the completion of the interior modification
specified in STC ST02355NY: Within 31 months after the effective
date of this AD, or no later than 12 months after the completion of
the interior modification specified in STC ST02355NY, whichever
occurs first.
(2) For airplanes having, as of the effective date of this AD,
more than 6 years from the completion of the interior modification
specified in STC T02355NY: Within 7 months after the effective date
of this AD.
Figure 1 to Paragraph (g)--Service Information
[GRAPHIC] [TIFF OMITTED] TR19JY23.195
(h) Optional Mitigation for Certain Airplanes
For airplanes identified in Bombardier Service Bulletin 650-35-
002, Revision 01, dated January 28, 2022, having, as of the
effective date of this AD, less than 6 years from the completion of
the interior modification specified in STC ST02355NY: In lieu of
accomplishing the oxygen system hose replacement required by
paragraph (g) of this AD, comply with all conditions specified in
paragraphs (h)(1) through (3) of this AD.
(1) The passenger oxygen system is tested within 6 months after
the effective date of this AD, and thereafter at intervals not to
exceed 36 months, in accordance with the Accomplishment Instructions
of Bombardier Service Bulletin 650-35-002, Revision 01, dated
January 28, 2022.
(2) If, during a test specified in paragraph (h)(1) of this AD,
any leak is found on any hose, all oxygen system hoses having a part
number in the O2C20T1 series must be replaced before further flight
in accordance with the Accomplishment Instructions of Bombardier
Service Bulletin 650-35-002, Revision 01, dated January 28, 2022.
Doing this replacement terminates the tests specified in paragraph
(h)(1) of this AD.
(3) Except as specified by paragraph (h)(2) of this AD, all
oxygen system hoses having a part number in the O2C20T1 series must
be replaced within 6 years from the completion of the interior
modification specified in STC ST02355NY. Doing this replacement
terminates the tests specified in paragraph (h)(1) of this AD.
(i) Parts Installation Prohibition
As of the effective date of this AD, no person may install any
oxygen system hose having a part number in the O2C20T1 and O2C20T14
series on any airplane.
(j) Credit for Previous Actions
(1) This paragraph provides credit for actions required by
paragraph (g) of this AD, if those actions were performed before the
effective date of this AD using Bombardier Service Bulletin 605-35-
006, dated August 23, 2021; or Bombardier Service Bulletin 650-35-
002, dated August 23, 2021; as applicable.
(2) This paragraph provides credit for actions specified in
paragraph (h) of this AD, if those actions were performed before the
effective date of this AD using Bombardier
[[Page 46066]]
Service Bulletin 650-35-002, dated August 23, 2021.
(k) Additional AD Provisions
The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager,
International Validation Branch, FAA, has the authority to approve
AMOCs for this AD, if requested using the procedures found in 14 CFR
39.19. In accordance with 14 CFR 39.19, send your request to your
principal inspector or responsible Flight Standards Office, as
appropriate. If sending information directly to the manager of the
International Validation Branch, mail it to ATTN: Program Manager,
Continuing Operational Safety, at the address identified in
paragraph (l)(2) of this AD or email to: <a href="/cdn-cgi/l/email-protection#d6effbb7a0a5fbb8afb7b5b9fbb5b9a596b0b7b7f8b1b9a0"><span class="__cf_email__" data-cfemail="10293d7166633d7e6971737f3d737f63507671713e777f66">[email protected]</span></a>. If
mailing information, also submit information by email. Before using
any approved AMOC, notify your appropriate principal inspector, or
lacking a principal inspector, the manager of the responsible Flight
Standards Office.
(2) Contacting the Manufacturer: For any requirement in this AD
to obtain instructions from a manufacturer, the instructions must be
accomplished using a method approved by the Manager, International
Validation Branch, FAA; or Transport Canada; or Bombardier, Inc.'s
Transport Canada Design Approval Organization (DAO). If approved by
the DAO, the approval must include the DAO-authorized signature.
(l) Additional Information
(1) Refer to Transport Canada AD CF-2022-34, dated June 20,
2022, for related information. This Transport Canada AD may be found
in the AD docket at <a href="http://regulations.gov">regulations.gov</a> under Docket No. FAA-2023-0025.
(2) For more information about this AD, contact Elizabeth
Dowling, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite
410, Westbury, NY 11590; telephone 516-228-7300; email <a href="/cdn-cgi/l/email-protection#b88195d9cecb95d6c1d9dbd795dbd7cbf8ded9d996dfd7ce"><span class="__cf_email__" data-cfemail="784155190e0b551601191b17551b170b381e1919561f170e">[email protected]</span></a>.
(3) Service information identified in this AD that is not
incorporated by reference is available at the addresses specified in
paragraphs (m)(4) and (5) of this AD.
(m) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference of the service information listed in this
paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this service information as applicable to do
the actions required by this AD, unless this AD specifies otherwise.
(i) Bombardier Service Bulletin 605-35-006, Revision 01, dated
January 28, 2022.
(ii) Bombardier Service Bulletin 650-35-002, Revision 01, dated
January 28, 2022.
(3) For service information identified in this AD, contact
Bombardier Business Aircraft Customer Response Center, 400
C[ocirc]te-Vertu Road West, Dorval, Qu[eacute]bec H4S 1Y9, Canada;
telephone 514-855-2999; email <a href="/cdn-cgi/l/email-protection#5d3c3e732428311d3c382f3273613c7d352f383b60" http: bombardier.com">bombardier.com</a>">ac.yul@aero.<a href="http://bombardier.com">bombardier.com</a></a>; website
<a href="http://bombardier.com">bombardier.com</a>.
(4) You may view this service information at the FAA,
Airworthiness Products Section, Operational Safety Branch, 2200
South 216th St., Des Moines, WA. For information on the availability
of this material at the FAA, call 206-231-3195.
(5) You may view this service information that is incorporated
by reference at the National Archives and Records Administration
(NARA). For information on the availability of this material at
NARA, email <a href="/cdn-cgi/l/email-protection#264054084f4855564345524f4948664847544708414950"><span class="__cf_email__" data-cfemail="e58397cb8c8b96958086918c8a8ba58b849784cb828a93">[email protected]</span></a>, or go to: <a href="http://www.archives.gov/federal-register/cfr/ibr-locations.html">www.archives.gov/federal-register/cfr/ibr-locations.html</a>.
Issued on June 28, 2023.
Michael Linegang,
Acting Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2023-15177 Filed 7-18-23; 8:45 am]
BILLING CODE 4910-13-P
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