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Federal Register / Vol. 86, No. 102 / Friday, May 28, 2021 / Proposed Rules with other manufacturers and civil aviation authorities CAAs to use this process. As a result, TCCA AD CF
201919R1 will be incorporated by reference in the FAA final rule. This proposed AD would, therefore, require compliance with TCCA AD CF2019
19R1 in its entirety, through that incorporation, except for any differences identified as exceptions in the regulatory text of this proposed AD.

Service information specified in TCCA
AD CF201919R1 that is required for compliance with TCCA AD CF2019
19R1 will be available at https
www.regulations.gov by searching for and locating Docket No. FAA2021
0444 after the FAA final rule is published.

28721

Interim Action The FAA considers this proposed AD
interim action. If final action is later identified, the FAA might consider further rulemaking then.
Costs of Compliance The FAA estimates that this proposed AD affects 46 airplanes of U.S. registry.
The FAA estimates the following costs to comply with this proposed AD:

ESTIMATED COSTS FOR REQUIRED ACTIONS
Labor cost
Parts cost
Cost per product
Up to 91 work-hours $85 per hour = Up to $7,735

Up to $15,265

Up to $23,000

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
Cost on U.S.
operators Up to $1,058,000.

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

ESTIMATED COSTS OF ON-CONDITION ACTIONS
Labor cost
Parts cost
3 work-hours $85 per hour = $255

Up to $77,000

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.
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:

VerDate Sep<11>2014

16:44 May 27, 2021

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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 Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 14 CFR part 39 as follows:
PART 39AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:

Authority: 49 U.S.C. 106g, 40113, 44701.
39.13

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

Airbus Canada Limited Partnership Type Certificate Previously Held by C Series Aircraft Limited Partnership CSALP;
Bombardier, Inc.: Docket No. FAA
20210444; Project Identifier MCAI
202001601T.

PO 00000

Frm 00008

Fmt 4702

Sfmt 4702

Cost per product Up to $77,255.

a Comments Due Date The FAA must receive comments on this airworthiness directive AD by July 12, 2021.
b Affected ADs None.
c Applicability This AD applies to Airbus Canada Limited Partnership type certificate previously held by C Series Aircraft Limited Partnership CSALP; Bombardier, Inc. Model BD500
1A10 and BD5001A11 airplanes, certificated in any category, as identified in Transport Canada Civil Aviation TCCA AD
CF201919R1, issued November 1, 2019
TCCA AD CF201919R1.
d Subject Air Transport Association ATA of America Code 28, Fuel.
e Reason This AD was prompted by reports of wear damage found between the bonding clamps and the fuel feed tubes inside the leftand right-hand fuel tanks. In one incident, the wear damage resulted in a hole in the main engine fuel feed tube located in the collector tank, and subsequent fuel imbalance during flight. The FAA is issuing this AD to address failure of certain fuel feed tubes, which could lead to a severe fuel imbalance or fuel starvation of one engine, or in the event of the failure of multiple fuel tubes feeding both engines, could result in an in-flight shutdown of both engines.
f Compliance Comply with this AD within the compliance times specified, unless already done.

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