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Federal Register / Vol. 86, No. 136 / Tuesday, July 20, 2021 / Proposed Rules The FAA estimates the total cost per operator for the new proposed actions 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 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, 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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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:

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

Amended
2. The FAA amends 39.13 by a. Removing Airworthiness Directive AD 20210303, Amendment 39
21406 86 FR 11103, February 24, 2021, and b. Adding the following new AD:

ATRGIE Avions de Transport Regional:
Docket No. FAA20210508; Project Identifier MCAI202100070T.
a Comments Due Date The FAA must receive comments on this airworthiness directive AD by September 3, 2021.
b Affected ADs This AD replaces AD 20210303, Amendment 3921406 86 FR 11103, February 24, 2021 AD 20210303.
c Applicability This AD applies to ATRGIE Avions de Transport Regional Model ATR72101, 102, 201, 202, 211, 212, and 212A airplanes, certificated in any category, with an original airworthiness certificate or original export certificate of airworthiness issued on or before October 9, 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 fatigue cracking and damage in principal structural elements, which could result in reduced structural integrity of the airplane.
f Compliance Comply with this AD within the compliance times specified, unless already done.
g Retained Maintenance or Inspection Program Revision, With No Changes This paragraph restates the requirements of paragraph k of AD 20210303, with no changes. For airplanes with an original airworthiness certificate or original export certificate of airworthiness issued on or before December 12, 2019, 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 20200173, dated August 5, 2020
EASA AD 20200173. Accomplishing the maintenance or inspection program revision required by paragraph j of this AD
terminates the requirements of this paragraph.
h Retained Exceptions to EASA AD 2020
0173, With Revised Exceptions This paragraph restates the requirements of paragraph l of AD 20210303, with revised exceptions.
1 Where EASA AD 20200173 refers to its effective date, this AD requires using March
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31, 2021 the effective date of AD 202103
03.
2 The requirements specified in paragraphs 1 and 3 of EASA AD 2020
0173 do not apply to this AD.
3 Paragraph 4 of EASA AD 20200173
specifies revising the approved AMP
aircraft maintenance program within 12
months after its effective date, but this AD
requires revising the existing maintenance or inspection program, as applicable, to incorporate the limitations, tasks and associated thresholds and intervals specified in paragraph 4 of EASA AD 2020
0173 within 90 days after March 31, 2021
the effective date of AD 20210303.
4 Except as provided by paragraph 2 of EASA AD 20200173, the initial compliance time for doing the tasks specified in paragraph 4 of EASA AD 20200173 is at the applicable associated thresholds specified in paragraph 4 of EASA AD 2020
0173, or within 90 days after March 31, 2021
the effective date of AD 20210303, whichever occurs later.
5 The provisions specified in paragraphs 5 and 6 of EASA AD 20200173 do not apply to this AD.
6 The Remarks section of EASA AD
20200173 does not apply to this AD.
i Retained Restrictions on Alternative Actions and Intervals, With a New Exception This paragraph restates the requirements of paragraph m of AD 20210303, with a new exception. Except as required by paragraph j of this AD, after the maintenance or inspection program has been revised as required by paragraph g of this AD, no alternative actions e.g., inspections or intervals, are allowed unless they are approved as specified in the provisions of the Ref. Publications section of EASA AD
20200173.
j New Maintenance Program Revision Except as specified in paragraph k of this AD: Comply with all required actions and compliance times specified in, and in accordance with, EASA AD 20210020, dated January 15, 2021 EASA AD 2021
0020. Accomplishing the maintenance or inspection program revision required by this paragraph terminates the requirements of paragraph g of this AD.
k Exceptions to EASA AD 20210020
1 Where EASA AD 20210020 refers to its effective date, this AD requires using the effective date of this AD.
2 The requirements specified in paragraphs 1 and 2 of EASA AD 2021
0020 do not apply to this AD.
3 Paragraph 3 of EASA AD 20210020
specifies revising the approved AMP
within 12 months after its effective date, but this AD requires revising the existing maintenance or inspection program, as applicable, within 90 days after the effective date of this AD.
4 Except as provided by Note 1 of EASA
AD 20210020, the initial compliance time for doing the tasks specified in paragraph 3
of EASA AD 20210020 is at the applicable thresholds as incorporated by the requirements of paragraph 3 of EASA AD
20210020, or within 90 days after the
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