Proposed Rule2023-11439
Airworthiness Directives; Bombardier, Inc., Airplanes
Primary source
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Published
May 31, 2023
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA proposes to adopt a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-1A11 (600), CL-600-2A12 (601), and CL-600-2B16 (601-3A, 601-3R, and 604 Variants) airplanes. This proposed AD was prompted by an uncommanded flap extension accompanied by a flaps fail caution message during climb. This proposed AD requires initial and repetitive operational tests of the flap control system. 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 104 (Wednesday, May 31, 2023)</title>
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[Federal Register Volume 88, Number 104 (Wednesday, May 31, 2023)]
[Proposed Rules]
[Pages 34794-34797]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2023-11439]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2023-1052; Project Identifier MCAI-2023-00260-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-600-1A11 (600), CL-600-2A12
(601), and CL-600-2B16 (601-3A, 601-3R, and 604 Variants) airplanes.
This proposed AD was prompted by an uncommanded flap extension
accompanied by a flaps fail caution message during climb. This proposed
AD requires initial and repetitive operational tests of the flap
control system. 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 July 17,
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-2023-1052; 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 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#bddcde93c4c8d1fddcd8cfd29381dc9dd5cfd8db80" 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: Chirayu Gupta, 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; email <a href="/cdn-cgi/l/email-protection#e1d8cc809792cc8f9880828ecc828e92a1878080cf868e97"><span class="__cf_email__" data-cfemail="bf8692dec9cc92d1c6dedcd092dcd0ccffd9dede91d8d0c9">[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-2023-1052; Project Identifier
MCAI-2023-00260-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
[[Page 34795]]
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
Chirayu Gupta, 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; email <a href="/cdn-cgi/l/email-protection#b58c98d4c3c698dbccd4d6da98d6dac6f5d3d4d49bd2dac3"><span class="__cf_email__" data-cfemail="5b62763a2d287635223a3834763834281b3d3a3a753c342d">[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 AD CF-2023-07, dated February 10, 2023 (Transport Canada AD CF-
2023-07) (also referred to as the MCAI), to correct an unsafe condition
on certain Bombardier, Inc., Model CL-600-1A11 (600), CL-600-2A12
(601), and CL-600-2B16 (601-3A, 601-3R, and 604 Variants) airplanes.
The MCAI states a Model CL-600-2B16 airplane experienced an uncommanded
flap extension from 0 to 45 degrees, accompanied by a flaps fail
caution message during climb. The airplane returned to the departure
airport without further incident. The investigations found that the
flap control system failed to arrest the uncommanded movement due to a
failed retract relay. The failed retract relay also caused the flap
control system to operate at half speed, which was undetected during
previous flights. The root cause of the uncommanded flap extension
remains under investigation. Transport Canada considers its AD to be an
interim action, and further AD action may follow. See Transport Canada
AD CF-2023-07 for additional background information.
The FAA is proposing this AD to address the failure of the flap
control system to arrest the uncommanded flap extension. The unsafe
condition, if not addressed, could lead to the loss of control of the
airplane.
You may examine the MCAI in the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2023-1052.
Related Service Information Under 1 CFR Part 51
The FAA reviewed the following service information, which specifies
procedures for performing initial and repetitive operational tests of
the inboard and outboard flaps to verify the functionality of the
retract relays. The service information also specifies contacting the
manufacturer for corrective action for any anomaly found during an
operational test. These documents are distinct since they apply to
different airplane models.
<bullet> Bombardier Service Bulletin 600-0780, dated December 29,
2022.
<bullet> Bombardier Service Bulletin 601-1112, Revision 01, dated
February 23, 2023.
<bullet> Bombardier Service Bulletin 604-27-040, dated December 29,
2022.
<bullet> Bombardier Service Bulletin 605-27-011, dated December 29,
2022.
<bullet> Bombardier Service Bulletin 650-27-004, dated December 29,
2022.
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
These products have been approved by the aviation authority of
another country, and are 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 referenced 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.
Interim Action
The FAA considers this proposed AD would be an interim action. If
final action is later identified, the FAA might consider further
rulemaking then.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 1,124 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
Labor cost Parts cost product Cost on U.S. operators
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1 work-hour x $85 per hour = $85.............. $0 $85 $95,540 per test cycle.
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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
[[Page 34796]]
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-2023-1052; Project Identifier MCAI-
2023-00260-T.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by July 17, 2023.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Bombardier, Inc., airplanes, certificated in
any category, identified in paragraphs (c)(1) through (3) of this
AD.
(1) Model CL-600-1A11 (600) airplanes, serial numbers 1004
through 1085 inclusive.
(2) Model CL-600-2A12 (601) airplanes, serial numbers 3001
through 3066 inclusive.
(3) Model CL-600-2B16 (601-3A, 601-3R, and 604 Variants)
airplanes, serial numbers 5001 through 5194 inclusive, 5301 through
5665 inclusive, 5701 through 5988 inclusive, and 6050 through 6999
inclusive.
(d) Subject
Air Transport Association (ATA) of America Code 27, Flight
Controls.
(e) Unsafe Condition
This AD was prompted by a Model CL-600-2B16 airplane that
experienced an uncommanded flap extension from 0 to 45 degrees,
accompanied by a flaps fail caution message during climb. The FAA is
issuing this AD to address the failure of the flap control system to
arrest the uncommanded flap extension. The unsafe condition, if not
addressed, could lead to the loss of control of the airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Initial Operational Test
Within 100 flight hours or 15 months, whichever occurs first
after the effective date of this AD, perform an initial operational
test of the inboard and outboard flaps, and all applicable
corrective actions, in accordance with Section 2.B. of the
Accomplishment Instructions of the applicable service information
identified in paragraphs (g)(1) through (5) of this AD. Corrective
actions must be done before further flight after the test.
(1) For Model CL-600-1A11 (Challenger 600) airplanes, serial
numbers 1004 through 1085 inclusive: Use Bombardier Service Bulletin
600-0780, dated December 29, 2022.
(2) For Model CL-600-2A12 (Challenger 601) airplanes, serial
numbers 3001 through 3066 inclusive, and Model CL-600-2B16
(Challenger 601) airplanes, serial numbers 5001 through 5194
inclusive: Use Bombardier Service Bulletin 601-1112, Revision 01,
dated February 23, 2023.
(3) For Model CL-600-2B16 (Challenger 604) airplanes, serial
numbers 5301 through 5665 inclusive: Use Bombardier Service Bulletin
604-27-040, dated December 29, 2022.
(4) For Model CL-600-2B16 (Challenger 605) airplanes, serial
numbers 5701 through 5988 inclusive: Use Bombardier Service Bulletin
605-27-011, dated December 29, 2022.
(5) For Model CL-600-2B16 (Challenger 650) airplanes, serial
numbers 6050 through 6999 inclusive: Use Bombardier Service Bulletin
650-27-004, dated December 29, 2022.
(h) Repetitive Operational Tests
Repeat the operational test required by paragraph (g) of this AD
at the applicable time specified in paragraph (h)(1) through (3) of
this AD.
(1) For Model CL-600-1A11 airplanes: Repeat at intervals not to
exceed 100 flight hours.
(2) For the airplanes identified in paragraphs (h)(2)(i) and
(ii) of this AD: Repeat within the repetitive intervals specified in
Section 1.D. of Bombardier Service Bulletin 601-1112, Revision 01,
dated February 23, 2023.
(i) Model CL-600-2A12 airplanes.
(ii) Model CL-600-2B16 airplanes, serial numbers 5001 through
5194.
(3) For the airplanes identified in paragraphs (h)(3)(i) through
(iii) of this AD: Repeat the test at intervals not to exceed 400
flight hours.
(i) Model CL-600-2B16 airplanes, serial numbers 5301 through
5665.
(ii) Model CL-600-2B16 airplanes, serial numbers 5701 through
5988.
(iii) Model CL-600-2B16 airplanes, serial numbers 6050 through
6999.
(i) Credit for Previous Actions
For the airplanes identified in paragraph (h)(2) of this AD:
This paragraph provides credit for actions required by paragraphs
(g) and (h) of this AD, if those actions were performed before the
effective date of this AD using Bombardier Service Bulletin 601-
1112, dated December 29, 2022.
(j) 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="586175392e2b753621393b37753b372b183e3939763f372e">[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.
(k) Additional Information
(1) Refer to Transport Canada AD CF-2023-07, dated February 10,
2023, 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-2023-1052.
(2) For more information about this AD, contact Chirayu Gupta,
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; email <a href="/cdn-cgi/l/email-protection#457c68243336682b3c24262a68262a36052324246b222a33"><span class="__cf_email__" data-cfemail="8fb6a2eef9fca2e1f6eeece0a2ece0fccfe9eeeea1e8e0f9">[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 (l)(3) and (4) of this AD.
(l) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference
[[Page 34797]]
(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 600-0780, dated December 29,
2022.
(ii) Bombardier Service Bulletin 601-1112, Revision 01, dated
February 23, 2023.
(iii) Bombardier Service Bulletin 604-27-040, dated December 29,
2022.
(iv) Bombardier Service Bulletin 605-27-011, dated December 29,
2022.
(v) Bombardier Service Bulletin 650-27-004, dated December 29,
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#4021236e39352c002125322f6e7c2160283225267d" 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#0365712d6a6d70736660776a6c6d436d6271622d646c75"><span class="__cf_email__" data-cfemail="f69084d89f9885869395829f9998b698978497d8919980">[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 May 24, 2023.
Ross Landes,
Deputy Director for Regulatory Operations, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2023-11439 Filed 5-30-23; 8:45 am]
BILLING CODE 4910-13-P
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