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Federal Register / Vol. 86, No. 53 / Monday, March 22, 2021 / Rules and Regulations
0971; 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, any comments received, and other information. The address for Docket Operations is U.S. Department of Transportation, Docket Operations, M30, West Building Ground Floor, Room W12140, 1200 New Jersey Avenue SE, Washington, DC 20590.
FOR FURTHER INFORMATION CONTACT:
Darren Gassetto, Aerospace Engineer, Mechanical Systems and Administrative Services Section, FAA, New York ACO
Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 5162287323; fax 5167945531; email 9-avs-nyaco-cos@faa.gov.
SUPPLEMENTARY INFORMATION:
Discussion Transport Canada Civil Aviation TCCA, which is the aviation authority for Canada, has issued TCCA AD CF
202014, dated April 30, 2020 also referred to as the Mandatory Continuing Airworthiness Information, or the MCAI, to correct an unsafe condition for certain Airbus Canada Limited Partnership Model BD5001A10 and BD5001A11 airplanes. You may examine the MCAI in the AD docket on the internet at https
www.regulations.gov by searching for and locating Docket No. FAA2020
0971.

The FAA issued a notice of proposed rulemaking NPRM to amend 14 CFR
part 39 by adding an AD that would apply to certain Airbus Canada Limited Partnership Model BD5001A10 and BD5001A11 airplanes. The NPRM
published in the Federal Register on October 28, 2020 85 FR 68257. The NPRM was prompted by a report that threaded fuel couplings were incorrectly installed at final assembly and in service. The NPRM proposed to require repetitive functional tests of the APU
fuel feed line shroud, a general visual inspection of the APU feed line shroud for any loose couplings; and tightening any loose couplings, which would terminate the repetitive functional tests.
The FAA is issuing this AD to address loose fuel couplings, which could eventually disconnect and could lead to fuel starvation of the APU and pose a risk of fire. See the MCAI for additional background information.
Comments The FAA gave the public the opportunity to participate in developing this final rule. The FAA has considered the comment received. The Air Line Pilots Association, International ALPA
stated that it supports the NPRM.

final rule as proposed, except for minor editorial changes. The FAA has determined that these minor changes:
Are consistent with the intent that was proposed in the NPRM for addressing the unsafe condition; and Do not add any additional burden upon the public than was already proposed in the NPRM.
Related Service Information Under 1
CFR Part 51
Airbus Canada has issued Service Bulletin BD500282009, Issue 003, dated August 14, 2020. This service information describes procedures for repetitive functional tests of the APU
fuel feed line shroud, a general visual inspection of the APU fuel feed line shroud for any loose couplings, and tightening of any loose couplings if necessary. The inspection and tightening of the APU fuel feed line shroud couplings terminates the repetitive functional tests of the APU
fuel feed line shroud.
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
Conclusion The FAA reviewed the relevant data, considered the comment received, and determined that air safety and the public interest require adopting this
The FAA estimates that this AD
affects 22 airplanes of U.S. registry. The FAA estimates the following costs to comply with this AD:

ESTIMATED COSTS FOR REQUIRED ACTIONS
Labor cost Up to 42 work-hours $85 per hour = Up to $3,570

The FAA estimates the following costs to do any necessary on-condition actions that would be required based on
Cost per product
Parts cost
the results of any required actions. The FAA has no way of determining the
$0

Up to $3,570

Cost on U.S.
operators Up to $78,540.

number of aircraft that might need these on-condition actions:

ESTIMATED COSTS OF ON-CONDITION ACTIONS
Labor cost
Parts cost
Cost per product
8 work-hours $85 per hour = $680

$0

$680

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Authority for This Rulemaking Title 49 of the United States Code specifies the FAAs 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 Agencys authority.

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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.

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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
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