Airworthiness Directives; Bombardier, Inc., Airplanes

[Federal Register Volume 89, Number 134 (Friday, July 12, 2024)]
[Rules and Regulations]
[Pages 57073-57075]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2024-15306]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2024-0467; Project Identifier MCAI-2023-00892-T; 
Amendment 39-22775; AD 2024-13-01]
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 a report of sparking due to damaged wire 
insulation in the fueling adapter. This AD requires inspecting the 
electrical wires attached to the airplane connector located behind the 
fuel scupper for damage, and all applicable related investigative and 
corrective actions. The FAA is issuing this AD to address the unsafe 
condition on these products.

DATES: This AD is effective August 16, 2024.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of August 16, 
2024.

ADDRESSES: 
    AD Docket: You may examine the AD docket at regulations.gov under 
Docket No. FAA-2024-0467; 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, contact Bombardier Business 
Aircraft Customer Response Center, 400 C[ocirc]te-Vertu Road West, 
Dorval, Qu[eacute]bec H4S 1Y9, Canada; phone 514-855-2999; email 
bombardier.com">ac.yul@aero.bombardier.com; website bombardier.com.
    <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 
regulations.gov under Docket No. FAA-2024-0467.

FOR FURTHER INFORMATION CONTACT: Steven Dzierzynski, Aviation Safety 
Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; 
phone: 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 certain Bombardier, 
Inc., Model CL-600-2B16 (604 Variant) airplanes. The NPRM published in 
the Federal Register on March 21, 2024 (89 FR 20141). The NPRM was 
prompted by AD CF-2023-55, dated July 18, 2023, issued by Transport 
Canada, which is the aviation authority for Canada (referred to after 
this as the MCAI). The MCAI states that during airplane refueling, a 
spark was seen when the fuel cap chain contacted one of the fuel 
scupper bolts. An inspection was performed and one of the fourteen 
bolts that surround the fuel inlet was found touching an electrical 
wire behind the scupper. Due to vibrations during flight, the bolt 
damaged the wire insulation and when the bolt was grounded to the 
airframe a spark was generated.
    In the NPRM, the FAA proposed to require inspecting the electrical 
wires attached to the airplane connector located behind the fuel 
scupper for damage, and all applicable related investigative and 
corrective actions. The FAA is issuing this AD to address

[[Page 57074]]

damaged wire insulation, which could lead to electrical sparks during 
refueling and possibly result in a fire.
    You may examine the MCAI in the AD docket at regulations.gov under 
Docket No. FAA-2024-0467.

Discussion of Final Airworthiness Directive

Comments

    The FAA received no comments on the NPRM or on the determination of 
the cost to the public.

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 Bombardier Service Bulletin 605-28-014, dated May 
10, 2023; and Bombardier Service Bulletin 650-28-003, dated May 10, 
2023. This service information specifies procedures for inspecting the 
electrical wires attached to the J274 connector (i.e., the airplane 
connector located behind the fuel scupper) for damage (i.e., core of 
the electrical wire exposed, or damage such as black soot to the 
insulation with no core exposure), and applicable related investigative 
and corrective actions. The related investigative action includes 
inspecting the fuel scupper for damage (i.e., arcing or pitting marks 
directly or indirectly induced by the wire chaffed on the scupper bolt 
and the surrounding area). The corrective actions include repairing any 
damaged fuel scupper, repairing or replacing any damaged electrical 
wire, and reinstalling the fuel scupper without a certain attachment 
bolt. These documents are distinct since they apply to different 
configurations of the airplane.
    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 163 airplanes of U.S. 
registry.
    The FAA estimates the following costs to comply with this AD:

                                      Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
                                                                                    Cost per       Cost on U.S.
                          Labor cost                              Parts cost        product         operators
----------------------------------------------------------------------------------------------------------------
3 work-hours x $85 per hour = $255...........................              $0             $255          $41,565
----------------------------------------------------------------------------------------------------------------

    The FAA estimates the following costs to do any necessary on-
condition actions that would be required based on the results of any 
required actions. The FAA has no way of determining the number of 
aircraft that might need these on-condition actions:

                                     Estimated Costs of On-Condition Actions
----------------------------------------------------------------------------------------------------------------
                                Labor cost                                     Parts cost      Cost per product
----------------------------------------------------------------------------------------------------------------
4 work-hours x $85 per hour = $340 *......................................           ** $0                 $340
----------------------------------------------------------------------------------------------------------------
* The FAA has received no definitive data on which to base the cost estimates for the on-condition scupper
  repair specified in this AD.
** The FAA has received no definitive data on which to base the parts cost for the electrical wire replacement
  specified in this AD.

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.

[[Page 57075]]

Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  39.13 by adding the following new airworthiness 
directive:

2024-13-01 Bombardier, Inc.: Amendment 39-22775; Docket No. FAA-
2024-0467; Project Identifier MCAI-2023-00892-T.

(a) Effective Date

    This airworthiness directive (AD) is effective August 16, 2024.

(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 
5775 through 5990 inclusive and 6050 through 6178 inclusive.

(d) Subject

    Air Transport Association (ATA) of America Code 28, Fuel.

(e) Unsafe Condition

    This AD was prompted by a report of sparking due to damaged wire 
insulation in the fueling adapter. The FAA is issuing this AD to 
address damaged wire insulation. The unsafe condition, if not 
addressed, could lead to electrical sparks during refueling and 
possibly result in a fire.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Inspections

    Within 48 months after the effective date of this AD: Inspect 
the electrical wires attached to the J274 connector for damage, in 
accordance with Section 2.B of the Accomplishment Instructions of 
the applicable Bombardier service bulletin referenced in figure 1 to 
paragraph (g) of this AD.

         Figure 1 to Paragraph (g)--Applicable Service Bulletins
------------------------------------------------------------------------
            Model                Serial No.         Service bulletin
------------------------------------------------------------------------
CL-600-2B16.................  5775 through     Bombardier Service
                               5990 inclusive.  Bulletin 605-28-014,
                                                dated May 10, 2023.
CL-600-2B16.................  6050 through     Bombardier Service
                               6178 inclusive.  Bulletin 650-28-003,
                                                dated May 10, 2023.
------------------------------------------------------------------------

(h) Related Investigative and Corrective Actions

    Before further flight after accomplishing paragraph (g) of this 
AD, do the applicable actions specified in paragraph (h)(1) or (2) 
of this AD.
    (1) If no electrical wire is damaged, do the related 
investigative and corrective actions specified in and in accordance 
with Section 2.C of the Accomplishment Instructions of the 
applicable Bombardier service bulletin referenced in figure 1 to 
paragraph (g) of this AD.
    (2) If any electrical wire is damaged, do the related 
investigative and corrective actions specified in and in accordance 
with Section 2.D of the Accomplishment Instructions of the 
applicable Bombardier service bulletin referenced in figure 1 to 
paragraph (g) of this AD.

(i) 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 (j) of this AD. Information may be emailed to: 9-AVS-
[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.

(j) Additional Information

    For more information about this AD, contact Steven Dzierzynski, 
Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, 
Westbury, NY 11590; phone: 516-228-7300; email: [email protected].

(k) 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 605-28-014, dated May 10, 2023.
    (ii) Bombardier Service Bulletin 650-28-003, dated May 10, 2023.
    (3) For service information, contact Bombardier Business 
Aircraft Customer Response Center, 400 C[ocirc]te-Vertu Road West, 
Dorval, Qu[eacute]bec H4S 1Y9, Canada; phone 514-855-2999; email 
bombardier.com">ac.yul@aero.bombardier.com; website bombardier.com.
    (4) You may view this material 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 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/[email protected]">www.archives.gov/federal-register/cfr/[email protected].

    Issued on June 18, 2024.
James D. Foltz,
Deputy Director, Compliance & Airworthiness Division, Aircraft 
Certification Service.
[FR Doc. 2024-15306 Filed 7-11-24; 8:45 am]
BILLING CODE 4910-13-P

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