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Federal Register / Vol. 86, No. 150 / Monday, August 9, 2021 / Proposed Rules
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ADs. The FAA has been coordinating this process with manufacturers and CAAs. As a result, the FAA proposes to incorporate EASA AD 20210093 by reference in the FAA final rule. This proposed AD would, therefore, require compliance with EASA AD 20210093
in its entirety through that incorporation, except for any differences identified as exceptions in the regulatory text of this proposed AD.
Using common terms that are the same as the heading of a particular section in EASA AD 20210093 does not mean that operators need comply only with that section. For example, where the AD
requirement refers to all required actions and compliance times, compliance with this AD requirement is not limited to the section titled Required Actions and Compliance Times in EASA AD 20210093.
Service information required by EASA
AD 20210093 for compliance will be available at https www.regulations.gov by searching for and locating Docket No.
FAA20210617 after the FAA final rule is published.
Airworthiness Limitation ADs Using the New Process The FAAs process of incorporating by reference MCAI ADs as the primary source of information for compliance with corresponding FAA ADs has been limited to certain MCAI ADs primarily those with service bulletins as the primary source of information for accomplishing the actions required by the FAA AD. However, the FAA is now expanding the process to include MCAI
ADs that require a change to airworthiness limitation documents, such as airworthiness limitation sections.
For these ADs that incorporate by reference an MCAI AD that changes airworthiness limitations, the FAA
requirements are unchanged. Operators must revise the existing maintenance or inspection program, as applicable, to incorporate the information specified in the new airworthiness limitation document. The airworthiness limitations must be followed according to 14 CFR 91.403c and 91.409e.
The previous format of the airworthiness limitation ADs included a paragraph that specified that no alternative actions e.g., inspections or intervals may be used unless the actions and intervals are approved as an alternative method of compliance AMOC in accordance with the procedures specified in the AMOCs paragraph under Other FAA
Provisions. This new format includes a New Provisions for Alternative Actions and Intervals paragraph that does not
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specifically refer to AMOCs, but operators may still request an AMOC to use an alternative action or interval.

on a substantial number of small entities under the criteria of the Regulatory Flexibility Act.

Costs of Compliance The FAA estimates that this proposed AD affects 118 airplanes of U.S. registry.
The FAA estimates the following costs to comply with this proposed AD:
The FAA has determined that revising the existing maintenance or inspection program takes an average of 90 workhours 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.

List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.

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 has 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:
1 Is not a significant regulatory action under Executive Order 12866, 2 Would not affect intrastate aviation in Alaska, and 3 Would not have a significant economic impact, positive or negative,
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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 SAS: Docket No. FAA20210617;
Project Identifier MCAI202100385T.
a Comments Due Date The FAA must receive comments on this airworthiness directive AD by September 23, 2021.
b Affected ADs This AD affects AD 20192101, Amendment 3919767 84 FR 56935, October 24, 2019 AD 20192101 and AD 202023
11, Amendment 3921327 85 FR 75838, November 27, 2020 AD 20202311.
c Applicability This AD applies all Airbus SAS Model A300 B4601, B4603, B4620, B4622, B4
605R, B4622R, F4605R, F4622R, and C4
605R Variant F airplanes, certificated in any category.
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 fatigue cracking, damage, and corrosion in principal structural elements, which could result in reduced structural integrity of the fuselage.
f Compliance Comply with this AD within the compliance times specified, unless already done.
g Requirements Except as specified in paragraph h of this AD: Comply with all required actions and compliance times specified in, and in accordance with, European Union Aviation Safety Agency EASA AD 20210093, dated March 30, 2021 EASA AD 20210093.

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