Proposed Rule2023-01673
Airworthiness Directives; Bombardier, Inc., Airplanes
Primary source
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Published
January 30, 2023
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA proposes to adopt a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-2B16 (604 Variant) airplanes. This proposed 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 proposed AD would require replacing oxygen system hoses having any part number in the O2C20T1 and O2C20T14 series. This AD also would prohibit installation of affected oxygen hoses. The FAA is proposing this AD to address the unsafe condition on these products.
Full Text
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<title>Federal Register, Volume 88 Issue 19 (Monday, January 30, 2023)</title>
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[Federal Register Volume 88, Number 19 (Monday, January 30, 2023)]
[Proposed Rules]
[Pages 5819-5822]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2023-01673]
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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]
RIN 2120-AA64
Airworthiness Directives; Bombardier, Inc., Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for certain Bombardier, Inc., Model CL-600-2B16 (604 Variant)
airplanes. This proposed 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
proposed AD would require replacing oxygen system hoses having any part
number in the O2C20T1 and O2C20T14 series. This AD also would prohibit
installation of affected oxygen hoses. The FAA is proposing this AD to
address the unsafe condition on these products.
DATES: The FAA must receive comments on this proposed AD by March 16,
2023.
ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
<bullet> Federal eRulemaking Portal: Go to <a href="http://regulations.gov">regulations.gov</a>. Follow
the instructions for submitting comments.
<bullet> Fax: 202-493-2251.
<bullet> Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE, Washington, DC 20590.
<bullet> Hand Delivery: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
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 NPRM, the mandatory continuing airworthiness
information (MCAI), any comments received, and other information. The
street address for Docket Operations is listed above.
Material Incorporated by Reference:
<bullet> For service information identified in this NPRM, contact
Bombardier Business Aircraft Customer Response
[[Page 5820]]
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#375654194e425b7756524558190b56175f4552510a" 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.
FOR FURTHER INFORMATION CONTACT: Elizabeth Dowling, Aerospace Engineer,
Mechanical Systems and Administrative Services Section, FAA, New York
ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
telephone 516-228-7300; fax 516-794-5531; email <a href="/cdn-cgi/l/email-protection#96afbbf7e0e5bbf8eff7f5f9bbf5f9e5d6f0f7f7b8f1f9e0"><span class="__cf_email__" data-cfemail="60594d0116134d0e1901030f4d030f13200601014e070f16">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
Comments Invited
The FAA invites you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under ADDRESSES. Include ``Docket No. FAA-2023-0025; Project Identifier
MCAI-2022-00804-T'' at the beginning of your comments. The most helpful
comments reference a specific portion of the proposal, explain the
reason for any recommended change, and include supporting data. The FAA
will consider all comments received by the closing date and may amend
the proposal because of those comments.
Except for Confidential Business Information (CBI) as described in
the following paragraph, and other information as described in 14 CFR
11.35, the FAA will post all comments received, without change, to
<a href="http://regulations.gov">regulations.gov</a>, including any personal information you provide. The
agency will also post a report summarizing each substantive verbal
contact received about this NPRM.
Confidential Business Information
CBI is commercial or financial information that is both customarily
and actually treated as private by its owner. Under the Freedom of
Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public
disclosure. If your comments responsive to this NPRM contain commercial
or financial information that is customarily treated as private, that
you actually treat as private, and that is relevant or responsive to
this NPRM, it is important that you clearly designate the submitted
comments as CBI. Please mark each page of your submission containing
CBI as ``PROPIN.'' The FAA will treat such marked submissions as
confidential under the FOIA, and they will not be placed in the public
docket of this NPRM. Submissions containing CBI should be sent to
Elizabeth Dowling, Aerospace Engineer, Mechanical Systems and
Administrative Services Section, FAA, New York ACO Branch, 1600 Stewart
Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7300; fax 516-
794-5531; email <a href="/cdn-cgi/l/email-protection#96afbbf7e0e5bbf8eff7f5f9bbf5f9e5d6f0f7f7b8f1f9e0"><span class="__cf_email__" data-cfemail="3a03175b4c491754435b5955175955497a5c5b5b145d554c">[email protected]</span></a>. Any commentary that the FAA
receives which is not specifically designated as CBI will be placed in
the public docket for this rulemaking.
Background
Transport Canada, which is the aviation authority for Canada, has
issued Transport Canada AD CF-2022-34, dated June 20, 2022 (Transport
Canada AD CF-2022-34) (also referred to after this as the MCAI), to
correct an unsafe condition on certain Bombardier, Inc., Model CL-600-
2B16 (604 Variant) airplanes. 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.
You may examine the MCAI in the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2023-0025.
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. The 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.
FAA's Determination
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
and service information described above. The FAA is issuing this NPRM
after determining that the unsafe condition described previously is
likely to exist or develop on other products of the same type design.
Proposed AD Requirements in This NPRM
This proposed AD would require accomplishing the actions specified
in the service information already described. This proposed AD would
also prohibit installation of affected oxygen hoses.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 42 airplanes of U.S. registry. The FAA estimates the following
costs to comply with this proposed 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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[[Page 5821]]
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.............................................. $85 $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 proposed 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
The FAA determined that this proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD would not
have a substantial direct effect on the States, on the relationship
between the national Government and the States, or on the distribution
of power and responsibilities among the various levels of government.
For the reasons discussed above, I certify this proposed
regulation:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Would not affect intrastate aviation in Alaska, and
(3) Would 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 Proposed Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 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:
Bombardier, Inc.: Docket No. FAA-2023-0025; Project Identifier MCAI-
2022-00804-T.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by March 16, 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.
[[Page 5822]]
[GRAPHIC] [TIFF OMITTED] TP30JA23.000
(h) Optional Mitigation for Certain Airplanes
For airplanes identified 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)(2) 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 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, New
York ACO 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 New York ACO
Branch, mail it to ATTN: Program Manager, Continuing Operational
Safety, at the address identified in paragraph (k)(2) of this AD or
email to: <a href="/cdn-cgi/l/email-protection#10293d7166633d7e6971737f3d737f63507671713e777f66"><span class="__cf_email__" data-cfemail="d2ebffb3a4a1ffbcabb3b1bdffb1bda192b4b3b3fcb5bda4">[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, New York ACO
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, Aerospace Engineer, Mechanical Systems and Administrative
Services Section, FAA, New York ACO Branch, 1600 Stewart Avenue,
Suite 410, Westbury, NY 11590; telephone 516-228-7300; fax 516-794-
5531; email <a href="/cdn-cgi/l/email-protection#132a3e7265603e7d6a72707c3e707c60537572723d747c65"><span class="__cf_email__" data-cfemail="360f1b5740451b584f5755591b5559457650575718515940">[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)(3) and (4) of this AD.
(m) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference (IBR) 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#8feeeca1f6fae3cfeeeafde0a1b3eeafe7fdeae9b2" 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#1c7a6e3275726f6c797f687573725c727d6e7d327b736a"><span class="__cf_email__" data-cfemail="b1d7c39fd8dfc2c1d4d2c5d8dedff1dfd0c3d09fd6dec7">[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 January 24, 2023.
Christina Underwood,
Acting Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2023-01673 Filed 1-27-23; 8:45 am]
BILLING CODE 4910-13-P
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