[Federal Register Volume 89, Number 15 (Tuesday, January 23, 2024)]
[Rules and Regulations]
[Pages 4179-4181]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2024-01170]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2023-1890; Project Identifier MCAI-2023-00283-T;
Amendment 39-22645; AD 2023-26-02]
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 all
Bombardier, Inc., Model BD-100-1A10 airplanes. This AD was prompted by
reports from the supplier that some overheat detection sensing elements
of the bleed air leak detection system were manufactured with
insufficient salt fill, which can result in an inability to detect hot
bleed air leaks. This AD requires revising the existing airplane flight
manual (AFM) to include procedures to prevent takeoff with an active
bleed air leak annunciated while on the ground. This AD also requires
testing the overheat detection sensing elements, marking each
serviceable sensing element with a witness mark, and replacing each
nonserviceable part with a serviceable part. This AD also prohibits the
installation of affected parts. The FAA is issuing this AD to address
the unsafe condition on these products.
DATES: This AD is effective February 27, 2024.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of February 27,
2024.
ADDRESSES:
AD Docket: You may examine the AD docket at regulations.gov under
Docket No. FAA-2023-1890; 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:
For Bombardier 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 bombardier.com">ac.yul@aero.bombardier.com;
website bombardier.com.
For Liebherr-Aerospace Toulouse SAS service information
identified in this AD, contact Liebherr-Aerospace Toulouse SAS, 408,
Avenue des Etats-Unis--B.P.52010, 31016 Toulouse Cedex, France;
telephone +33 (0)5.61.35.28.28; fax +33 (0)5.61.35.29.29; email
[email protected]; website liebherr.aero.
You may view this service information 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. It is also available at
regulations.gov under Docket No. FAA-2023-1890.
FOR FURTHER INFORMATION CONTACT: Steven Dzierzynski, Aviation Safety
Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
telephone 516-228-7300; email [email protected].
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 all Bombardier, Inc.,
Model BD-100-1A10 airplanes. The NPRM published in the Federal Register
on September 29, 2023 (88 FR 67118). The NPRM was prompted by AD CF-
2023-09, dated February 14, 2023, issued by Transport Canada, which is
the aviation authority for Canada (referred to after this as the MCAI).
The MCAI states that Bombardier received reports from the supplier of
the overheat detection sensing elements of a manufacturing quality
escape. Some of the sensing elements of the bleed air leak detection
system were manufactured with insufficient salt fill. This condition
can result in an inability to detect hot bleed air leaks, which can
cause damage to surrounding structures and systems and prevent
continued safe flight and landing.
In the NPRM, the FAA proposed to require revising the existing AFM
to include procedures to prevent takeoff with an active bleed air leak
annunciated while on the ground. The FAA also proposed to require
testing the overheat detection sensing elements, marking each
serviceable sensing element with a witness mark, and replacing each
nonserviceable part with a serviceable part. The FAA also proposed to
prohibit the installation of affected parts. The FAA is issuing this AD
to address the unsafe condition on these products.
You may examine the MCAI in the AD docket at regulations.gov under
Docket No. FAA-2023-1890.
Discussion of Final Airworthiness Directive
Comments
The FAA received a comment from an anonymous commenter who has
experience troubleshooting and maintaining environmental control
systems (bleed air). No changes to the AD were requested. The commenter
stated revising the AFM procedures will prevent costly maintenance and
implementing extra safety features will also be cost effective and
favor pilot safety. The FAA infers that the commenter supports the AD.
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 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, 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 Liebherr Service Bulletin CFD-F1958-26-01, dated
May 6, 2022, which specifies part numbers for affected sensing
elements.
Bombardier has issued the following service information. This
service information describes procedures to prevent the takeoff of an
airplane with an active bleed air leak annunciated while on the ground.
These documents are distinct since they apply to different airplane
models.
[[Page 4180]]
Section 05-42, Air Conditioning & Pressurization, Non-
Normal Procedures Section, Bombardier Challenger 300 AFM (Imperial
Version), Publication No. CSP 100-1, Revision 71, dated November 9,
2022. (For obtaining the procedures for Bombardier Challenger 300 AFM
(Imperial Version), Publication No. CSP 100-1, use Document
Identification No. CH 300 AFM-I.)
Section 05-42, Air Conditioning & Pressurization, Non-
Normal Procedures Section, Bombardier Challenger 350 AFM, Publication
No. CH 350 AFM, Revision 37, dated November 9, 2022. (For obtaining the
procedures for Bombardier Challenger 350 AFM, Publication No. CH 350
AFM, use Document Identification No. CH 350 AFM.)
The FAA also reviewed Bombardier Service Bulletin 100-36-10, dated
December 23, 2022; and Bombardier Service Bulletin 350-36-003, dated
December 23, 2022; which specify procedures for testing each leak
detection loop sensing element installed on the airplane, marking each
serviceable sensing element with a witness mark, and replacing each
nonserviceable part with a serviceable part. These documents are
distinct since they apply to different airplane models.
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 317 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this AD:
Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
Labor cost Parts cost Cost per product Cost on U.S. operators
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Up to 77 work-hours x $85 per hour = $0 Up to $6,545............... Up to $2,074,765.
$6,545.
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The FAA has received no definitive data on which to base the cost
estimates for the on-condition actions specified in this AD. The FAA
estimates it would take up to 1.5 hours to replace one sensor.
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 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:
2023-26-02 Bombardier, Inc.: Amendment 39-22645; Docket No. FAA-
2023-1890; Project Identifier MCAI-2023-00283-T.
(a) Effective Date
This airworthiness directive (AD) is effective February 27,
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: 36, Pneumatic.
(e) Unsafe Condition
This AD was prompted by reports from the supplier that some
overheat detection sensing elements of the bleed air leak detection
system were manufactured with insufficient salt fill. The FAA is
issuing this AD to address non-conforming sensing elements of the
bleed air leak detection system. The unsafe condition, if not
addressed, could result in an inability to detect hot bleed air
leaks and consequent damage to surrounding structures and systems,
which could prevent continued safe flight and landing.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Definitions
(1) For purposes of this AD, an affected part is a sensing
element marked with a date code A0448 through A2104 inclusive and
having an LTS/Kidde part number specified in Liebherr Service
Bulletin CFD-F1958-26-01, dated May 6, 2022, unless that sensing
element meets the criteria specified in either paragraph (g)(1)(i)
or (ii) of this AD.
(i) The sensing element has been tested as specified in Section
3 of the Accomplishment Instructions of Kidde Aerospace and Defense
Service Bulletin CFD-26-1, Revision 6, dated February 28, 2022, or
earlier revisions, and has been found to be serviceable; and the
sensing element has been marked on one face of its connector hex nut
and packaged as specified in Section 3.C. of the Accomplishment
Instructions of Kidde Aerospace and Defense Service Bulletin CFD-26-
1, Revision 6, dated February 28, 2022, or earlier revisions.
[[Page 4181]]
(ii) The sensing element has been tested and found to be
serviceable as specified in paragraph (i) of this AD; and the
sensing element has been marked on one face of one connector hex nut
with one green mark, as specified in Figure 11 of Bombardier Service
Bulletin 100-36-10, dated December 23, 2022, or Bombardier Service
Bulletin 350-36-003, dated December 23, 2022, as applicable (the
figure is representative for all sensing elements).
(2) For purposes of this AD, a serviceable part is a sensing
element that is not an affected part.
(h) Revision of the Existing Airplane Flight Manual (AFM)
For airplane serial numbers 20001 through 20457 inclusive and
20501 through 20906 inclusive: Within 30 days after the effective
date of this AD, revise the existing AFM to include the information
specified in paragraphs (h)(1) and (2) of this AD, as applicable.
(1) For airplane serial numbers 20001 through 20457 inclusive:
Section 05-42, Air Conditioning & Pressurization, Non-Normal
Procedures Section, Bombardier Challenger 300 AFM (Imperial
Version), Publication No. CSP 100-1, Revision 71, dated November 9,
2022.
Note 1 to Paragraph (h)(1): For obtaining the procedures for
Bombardier Challenger 300 AFM (Imperial Version), Publication No.
CSP 100-1, use Document Identification No. CH 300 AFM-I.
(2) For airplane serial numbers 20501 through 20906 inclusive:
Section 05-42, Airconditioning & Pressurization, Non-Normal
Procedures Section, Bombardier Challenger 350 AFM, Publication No.
CH 350 AFM, Revision 37, dated November 9, 2022.
Note 2 to Paragraph (h)(2): For obtaining the procedures for
Bombardier Challenger 350 AFM, Publication No. CH 350 AFM, use
Document Identification No. CH 350 AFM.
(i) Testing of Overheat Detection Sensing Elements
For airplane serial numbers 20001 through 20457 inclusive and
20501 through 20906 inclusive: Within 7,500 flight cycles or 96
months, whichever occurs first, from the effective date of this AD,
test the overheat detection sensing elements to determine if they
are serviceable, in accordance with the Accomplishment Instructions
of Bombardier Service Bulletin 100-36-10, dated December 23, 2022;
or Bombardier Service Bulletin 350-36-003, dated December 23, 2022,
as applicable.
(1) For each sensing element that is serviceable, before further
flight, mark the sensing element with a witness mark in accordance
with the Accomplishment Instructions of Bombardier Service Bulletin
100-36-10, dated December 23, 2022; or Bombardier Service Bulletin
350-36-003, dated December 23, 2022; as applicable.
(2) For each sensing element that is not serviceable, before
further flight, replace the sensing element with a serviceable part
in accordance with the Accomplishment Instructions of Bombardier
Service Bulletin 100-36-10, dated December 23, 2022; or Bombardier
Service Bulletin 350-36-003, dated December 23, 2022; as applicable.
(j) Parts Installation Prohibition
As of the effective date of this AD, no person may install an
affected part on any airplane.
(k) No Reporting Requirement
Although Bombardier Service Bulletin 100-36-10, dated December
23, 2022; and Bombardier Service Bulletin 350-36-003, dated December
23, 2022; specify to submit certain information to the manufacturer,
this AD does not include that requirement.
(l) 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 the address identified
in paragraph (m)(2) of this AD. Information may be emailed to: 9-
[email protected]. 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.
(m) Additional Information
(1) Refer to Transport Canada AD CF-2023-09, dated February 14,
2023, for related information. This Transport Canada AD may be found
in the AD docket at regulations.gov under Docket No. FAA-2023-1890.
(2) 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 [email protected].
(n) 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 100-36-10, dated December 23,
2022.
(ii) Bombardier Service Bulletin 350-36-003, dated December 23,
2022.
(iii) Section 05-42, Air Conditioning & Pressurization, Non-
Normal Procedures Section, Bombardier Challenger 300 AFM (Imperial
Version), Publication No. CSP 100-1, Revision 71, dated November 9,
2022.
Note 3 to Paragraph (n)(2)(iii): For obtaining the procedures
for Bombardier Challenger 300 AFM (Imperial Version), Publication
No. CSP 100-1, use Document Identification No. CH 300 AFM-I.
(iv) Section 05-42, Air Conditioning & Pressurization, Non-
Normal Procedures Section, Bombardier Challenger 350 AFM,
Publication No. CH 350 AFM, Revision 37, dated November 9, 2022.
Note 4 to Paragraph (n)(2)(iv): For obtaining the procedures for
Bombardier Challenger 350 AFM, Publication No. CH 350 AFM, use
Document Identification No. CH 350 AFM.
(v) Liebherr Service Bulletin CFD-F1958-26-01, dated May 6,
2022.
(3) For Bombardier 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 bombardier.com">ac.yul@aero.bombardier.com; website
bombardier.com.
(4) For Liebherr-Aerospace Toulouse SAS service information
identified in this AD, contact Liebherr-Aerospace Toulouse SAS, 408,
Avenue des Etats-Unis--B.P.52010, 31016 Toulouse Cedex, France;
telephone +33 (0)5.61.35.28.28; fax +33 (0)5.61.35.29.29; email
[email protected]; website liebherr.aero.
(5) You may view this service information 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.
(6) You may view this material at the National Archives and
Records Administration (NARA). For information on the availability
of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations, or email [email protected].
Issued on December 21, 2023.
Caitlin Locke,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2024-01170 Filed 1-22-24; 8:45 am]
BILLING CODE 4910-13-P