Proposed Rule2024-17362
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
August 9, 2024
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA proposes to adopt a new airworthiness directive (AD) for all Bombardier, Inc., Model BD-100-1A10 airplanes. This proposed AD was prompted by a determination that new or more restrictive maintenance tasks are necessary. This proposed AD would require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive maintenance tasks. The FAA is proposing this AD to address the unsafe condition on these products.
Full Text
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<title>Federal Register, Volume 89 Issue 154 (Friday, August 9, 2024)</title>
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[Federal Register Volume 89, Number 154 (Friday, August 9, 2024)]
[Proposed Rules]
[Pages 65267-65270]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2024-17362]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2024-2007; Project Identifier MCAI-2023-01270-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 all Bombardier, Inc., Model BD-100-1A10 airplanes. This proposed AD
was prompted by a determination that new or more restrictive
maintenance tasks are necessary. This proposed AD would require
revising the existing maintenance or inspection program, as applicable,
to incorporate new or more restrictive maintenance tasks. 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 September
23, 2024.
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-2024-2007; 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 Bombardier, Inc. material identified in this proposed
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#7011135e09051c301115021f5e4c1150180215164d" 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 material at the FAA, Airworthiness
Products Section, Operational Safety Branch, 2200 South 216th Street,
Des Moines, WA. For information on the availability of this material at
the FAA, call 206-231-3195.
FOR FURTHER INFORMATION CONTACT: Steven Dzierzynski, Aviation Safety
Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
telephone: 516-228-7300; email: <a href="/cdn-cgi/l/email-protection#5a63773b2c297734233b3935773935291a3c3b3b743d352c"><span class="__cf_email__" data-cfemail="764f5b1700055b180f1715195b1519053610171758111900">[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-2024-2007; Project Identifier
MCAI-2023-01270-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
[[Page 65268]]
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
Steven Dzierzynski, Aviation Safety Engineer, FAA, 1600 Stewart Avenue,
Suite 410, Westbury, NY 11590; telephone: 516-228-7300; email: <a href="/cdn-cgi/l/email-protection#80b9ade1f6f3adeef9e1e3efade3eff3c0e6e1e1aee7eff6"><span class="__cf_email__" data-cfemail="1a23377b6c693774637b7975377975695a7c7b7b347d756c">[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-2023-78, dated December 19, 2023
(Transport Canada AD CF-2023-78) (also referred to as the MCAI), to
correct an unsafe condition for all Bombardier, Inc., Model BD-100-1A10
airplanes. The MCAI states that airplanes could experience misleading
electrical system status indications (push button annunciators (PBA)
and engine indicating and crew alerting system (EICAS)) as a result of
contamination of electrical contacts in the left-hand (LH) direct
current power center (DCPC) internal communication data bus. The MCAI
states that new or more restrictive maintenance tasks have been
developed to rectify lower time LH DCPC units not addressed by
previously issued AD's.
The FAA is proposing this AD to address erratic indications, which
could cause the flightcrew to turn off fully operational electrical
power sources, leading to partial or complete loss of electrical power.
The unsafe condition, if not addressed, could result in loss of flight
displays and reduced controllability 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-2024-
2007.
Material Incorporated by Reference Under 1 CFR Part 51
The FAA reviewed the following documents:
<bullet> Task 24-61-01-101, ``Restoration of the left DC Power
Center (DCPC) (Pre SB100-24-30),'' Section 5-10-20, ``Time Limits--
Supplementary Limitations,'' of Part 2, ``Airworthiness Limitations'',
of the Bombardier Challenger 300 BD-100 Time Limits/Maintenance Checks,
Revision 24, dated August 9, 2023.
<bullet> Task 24-61-01-101, ``Restoration of the Left DC Power
Center (DCPC) (Pre SB350-24-005),'' Section 5-10-20, ``Time Limits--
Supplementary Limitations,'' of Part 2, ``Airworthiness Limitations,''
of the Bombardier Challenger 350 BD-100 Time Limits/Maintenance Checks,
Revision 14, dated August 9, 2023.
This material specifies new or more restrictive airworthiness
limitations for safe life limits.
This material is reasonably available because the interested
parties have access to it through their normal course of business or by
the means identified in 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, the
FAA has been notified of the unsafe condition described in the MCAI and
material 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 Requirements of This NPRM
This proposed AD would require revising the existing maintenance or
inspection program, as applicable, to incorporate new or more
restrictive maintenance tasks.
This proposed AD would require revisions to certain operator
maintenance documents to include new actions (e.g., inspections).
Compliance with these actions is required by 14 CFR 91.403(c). For
airplanes that have been previously modified, altered, or repaired in
the areas addressed by this proposed AD, the operator may not be able
to accomplish the actions described in the revisions. In this
situation, to comply with 14 CFR 91.403(c), the operator must request
approval for an alternative method of compliance according to paragraph
(i)(1) of this proposed AD.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 356 airplanes of U.S. registry. The FAA estimates the following
costs to comply with this proposed AD:
The FAA has determined that revising the maintenance or inspection
program takes an average of 90 work-hours per operator, although the
agency recognizes that this number may vary from operator to operator.
Since operators incorporate maintenance or inspection program changes
for their affected fleet(s), the FAA has determined that a per-operator
estimate is more accurate than a per-airplane estimate. Therefore, the
agency estimates the average total cost per operator to be $7,650 (90
work-hours x $85 per work-hour).
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
[[Page 65269]]
(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-2024-2007; Project Identifier MCAI-
2023-01270-T.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by September 23, 2024.
(b) Affected ADs
None.
(c) Applicability
This AD applies to all Bombardier, Inc., Model BD-100-1A10
airplanes, certificated in any category.
(d) Subject
Air Transport Association (ATA) of America Code 24, Electrical
Power.
(e) Unsafe Condition
This AD was prompted by a determination that new or more
restrictive maintenance tasks are necessary. The FAA is issuing this
AD to address to address erratic indications, which could cause the
flightcrew to turn off fully operational electrical power sources,
leading to partial or complete loss of electrical power. The unsafe
condition, if not addressed, could result in loss of flight displays
and reduced controllability of the airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Maintenance or Inspection Program Revision
Within 60 days after the effective date of this AD, revise the
existing maintenance or inspection program, as applicable, to
incorporate the information specified in the tasks specified in
figure 1 to paragraph (g) of this AD, of Part 2, ``Airworthiness
Limitations,'' of the applicable Time Limits/Maintenance Checks
(TLMC) manual. The initial compliance time for doing the tasks is at
the interval specified in the applicable TLMC manual specified in
figure 1 to paragraph (g) of this AD, or within 60 days after the
effective date of this AD, whichever occurs later.
Figure 1 to paragraph (g)--Time Limits--Supplementary Limitations Tasks
[GRAPHIC] [TIFF OMITTED] TP09AU24.000
Note 1 to paragraph (g): The asterisk (or ``one star'') with the
last three digits of the task numbers listed in figure 1 to
paragraph (g) of this AD indicates that the task is an airworthiness
limitation task.
(h) No Alternative Actions, Intervals
After the existing maintenance or inspection program has been
revised as required by paragraph (g) of this AD, no alternative
actions (e.g., inspections) or intervals may be used unless the
actions and intervals are approved as an alternative method of
compliance (AMOC) in accordance with the procedures specified in
paragraph (i)(1) of this AD.
(i) Other FAA 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 the address identified
in paragraph (j) of this AD. Information may be emailed to: 9-AVS-
<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="642a3d25272b49272b37240205054a030b12">[email protected]</a>. 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.
(j) Additional Information
For more information about this AD, contact Steven Dzierzynski,
Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; telephone: 516-228-7300; email: <a href="/cdn-cgi/l/email-protection#b48d99d5c2c799dacdd5d7db99d7dbc7f4d2d5d59ad3dbc2"><span class="__cf_email__" data-cfemail="3c05115d4a4f1152455d5f53115f534f7c5a5d5d125b534a">[email protected]</span></a>.
(k) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference (IBR) of the material listed in this
paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this material as applicable to do the actions
required by this AD, unless this AD specifies otherwise.
(i) Task 24-61-01-101, ``Restoration of the left DC Power Center
(DCPC) (Pre SB100-24-30),'' Section 5-10-20, ``Time Limits--
Supplementary Limitations,'' of Part 2, ``Airworthiness
Limitations'', of the Bombardier Challenger 300 BD-100 Time Limits/
Maintenance Checks, Revision 24, dated August 9, 2023.
(ii) Task 24-61-01-101, ``Restoration of the Left DC Power
Center (DCPC) (Pre SB350-24-005),'' Section 5-10-20, ``Time Limits--
Supplementary Limitations,'' of Part 2, ``Airworthiness
Limitations,'' of the Bombardier Challenger 350 BD-100 Time
[[Page 65270]]
Limits/Maintenance Checks, Revision 14, dated August 9, 2023.
(3) For Bombardier Inc. material 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#88e9eba6f1fde4c8e9edfae7a6b4e9a8e0faedeeb5" 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 material at the FAA, Airworthiness
Products Section, Operational Safety Branch, 2200 South 216th
Street, Des Moines, WA. For information on the availability of this
material at the FAA, call 206-231-3195.
(5) You may view this material at the National Archives and
Records Administration (NARA). For information on the availability
of this material at NARA, visit <a href="http://www.archives.gov/federal-register/cfr/ibr-locations">www.archives.gov/federal-register/cfr/ibr-locations</a> or email <a href="/cdn-cgi/l/email-protection#4a2c38642324393a2f293e2325240a242b382b642d253c"><span class="__cf_email__" data-cfemail="88eefaa6e1e6fbf8edebfce1e7e6c8e6e9fae9a6efe7fe">[email protected]</span></a>.
Issued on July 31, 2024.
Victor Wicklund,
Deputy Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2024-17362 Filed 8-8-24; 8:45 am]
BILLING CODE 4910-13-P
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