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Federal Register / Vol. 86, No. 34 / Tuesday, February 23, 2021 / Rules and Regulations
and locating Docket No. FAA2020
1110.
The FAA issued a notice of proposed rulemaking NPRM to amend 14 CFR
part 39 to supersede AD 20192315, Amendment 3919809 84 FR 67830, December 12, 2019 AD 20192315.
AD 20192315 applied to certain Airbus Canada Limited Partnership Model BD5001A10 and BD500
1A11 airplanes. The NPRM published in the Federal Register on December 7, 2020 85 FR 78805. The NPRM was prompted by a determination that new or more restrictive airworthiness limitations are necessary. The NPRM
proposed to require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations.
The FAA is issuing this AD to address reduced structural integrity of the airplane or reduced controllability of the airplane. 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.
Conclusion The FAA reviewed the relevant data, considered the comment received, and determined that air safety and the public interest require adopting this 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 Limited Partnership has issued A220 Airworthiness Limitations BD5003AB481140002, Issue 011.00, dated June 18, 2020. This service information describes airworthiness limitations for fuel tank systems, safe life limits, and certification maintenance requirements.
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 11 airplanes of U.S. registry. The
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FAA estimates the following costs to comply with this 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 fleets, 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
$85 per work-hour.
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 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.

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Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 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:
a. Removing Airworthiness Directive AD 20192315, Amendment 39
19809 84 FR 67830, December 12, 2019, and b. Adding the following new AD:

20210405 Airbus Canada Limited Partnership Type Certificate Previously Held by C Series Aircraft Limited Partnership CSALP; Bombardier, Inc.:
Amendment 3921426; Docket No.
FAA20201110; Project Identifier MCAI202001003T.
a Effective Date This airworthiness directive AD is effective March 30, 2021.
b Affected ADs This AD replaces AD 20192315, Amendment 3919809 84 FR 67830, December 12, 2019.
c Applicability This AD applies to the Airbus Canada Limited Partnership type certificate previously held by C Series Aircraft Limited Partnership CSALP; Bombardier, Inc.
Model BD5001A10 and BD5001A11
airplanes, certificated in any category, identified in paragraphs c1 and 2 of this AD.
1 Model BD5001A10 airplanes, serial numbers 50001 and subsequent with an original airworthiness certificate or original export certificate of airworthiness issued on or before June 18, 2020.
2 Model BD5001A11 airplanes, serial numbers 55001 and subsequent with an original airworthiness certificate or original export certificate of airworthiness issued on or before June 18, 2020.
d Subject Air Transport Association ATA of America Code 05, Time Limits/Maintenance Checks.
e Reason This AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. The FAA is issuing this AD to address reduced structural integrity of the airplane or reduced controllability of the airplane.
f Compliance Comply with this AD within the compliance times specified, unless already done.

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