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Federal Register / Vol. 86, No. 35 / Wednesday, February 24, 2021 / Rules and Regulations
approved for incorporation by reference as of August 26, 2019 84 FR 35028, July 22, 2019.
This material 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
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The FAA estimates that this AD
affects 23 airplanes of U.S. registry. The FAA estimates the following costs to comply with this AD:
The FAA estimates the total cost per operator for the retained actions from AD 20191304 to be $7,650 90 workhours $85 per work-hour.
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. In the past, the agency has estimated that this action takes 1 work-hour per airplane. 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.
The FAA estimates the total cost per operator for the new actions to be $7,650 90 work-hours $85 per workhour.

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.
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.

Authority for This Rulemaking
39.13

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 This AD will not have federalism implications under Executive Order
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Amended
2. The FAA amends 39.13 by:
a. Removing Airworthiness Directive AD 20002326, Amendment 39
11999 65 FR 70775, November 28, 2000; AD 20181411, Amendment 39
19331 83 FR 34031, July 19, 2018; and AD 20191304, Amendment 3919677
84 FR 35028, July 22, 2019; and b. Adding the following new AD:
20210303 ATRGIE Avions de Transport Regional: Amendment 3921406; Docket No. FAA20200972; Project Identifier MCAI202001091T.
a Effective Date This airworthiness directive AD is effective March 31, 2021.
b Affected ADs 1 This AD replaces AD 20002326, Amendment 3911999 65 FR 70775, November 28, 2000 AD 20002326.
2 This AD replaces AD 20181411, Amendment 3919331 83 FR 34031, July 19, 2018 AD 20181411.
3 This AD replaces AD 20191304, Amendment 3919677 84 FR 35028, July 22, 2019 AD 20191304.

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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 December 12, 2019.
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 g of AD 20191304, with no changes. For airplanes with an original airworthiness certificate or original export certificate of airworthiness issued on or before January 30, 2018: Within 90 days after August 26, 2019 the effective date of AD
20191304, revise the existing maintenance or inspection program, as applicable, to incorporate the information specified in ATR
ATR72 Time Limits Document, Revision 16, dated January 30, 2018. The initial compliance time for doing the tasks is at the time specified in ATR ATR72 Time Limits Document, Revision 16, dated January 30, 2018, or within 90 days after August 26, 2019, whichever occurs later, except as provided by paragraphs h and i of this AD.
h Retained Initial Compliance Times for Certain Tasks, With No Changes This paragraph restates the requirements of paragraph h of AD 20191304, with no changes. For airplanes with an original airworthiness certificate or original export certificate of airworthiness issued on or before January 30, 2018: For accomplishing airworthiness limitations AWL and certification maintenance requirement CMR/maintenance significant item MSI
tasks identified in figure 1 to paragraph h of this AD, the initial compliance time is at the applicable time specified in the airworthiness limitations section ALS of the ATR ATR72 Time Limits Document, Revision 16, dated January 30, 2018, or at the applicable compliance time in figure 1 to paragraph h of this AD, whichever occurs later.

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