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Federal Register / Vol. 86, No. 95 / Wednesday, May 19, 2021 / Rules and Regulations
maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations, as specified in EASA AD 20200263.
The FAA is issuing this AD to address reduced structural integrity 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 received no comments on the SNPRM or on the determination of the cost to the public.

Authority for This Rulemaking
Conclusion The FAA reviewed the relevant data 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 SNPRM for addressing the unsafe condition; and Do not add any additional burden upon the public than was already proposed in the SNPRM.
The FAA also determined that these changes will not increase the economic burden on any operator or increase the scope of this final rule.
Related Service Information Under 1
CFR Part 51
EASA AD 20200263 describes new or more restrictive airworthiness limitations for airplane structures and safe life limits.
This AD also requires the following service information, which the Director of the Federal Register approved for incorporation by reference as of November 20, 2018 83 FR 52123, October 16, 2018.
ATR ATR42400/500, Time Limits Document TL, Revision 11, dated May 5, 2015.
ATR ATR42400/-500 Time Limits Temporary Revision TR01/17, dated May 3, 2017.
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.

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Costs of Compliance The FAA estimates that this AD
affects 9 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 20182014 to be $7,650 90 workhours $85 per work-hour.
The FAA has determined that revising the existing maintenance or inspection
VerDate Sep<11>2014

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.
The FAA estimates the total cost per operator for the new actions to be $7,650 90 work-hours $85 per workhour.

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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 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 20002304R1, Amendment 39
12174 66 FR 19381, April 16, 2001;
and AD 20182014, Amendment 39
19448 83 FR 52123, October 16, 2018;
and b. Adding the following new AD:

20210913 ATRGIE Avions de Transport Regional: Amendment 3921527; Docket No. FAA20200973; Project Identifier MCAI202001113T.
a Effective Date This airworthiness directive AD is effective June 23, 2021.
b Affected ADs 1 This AD replaces AD 20002304R1, Amendment 3912174 66 FR 19381, April 16, 2001 AD 20002304R1; and AD 2018
2014, Amendment 3919448 83 FR 52123, October 16, 2018 AD 20182014.
2 This AD affects AD 20080419 R1, Amendment 3916069 74 FR 56713, November 3, 2009 AD 20080419 R1; and AD 20152609, Amendment 3918357 81
FR 1483, January 13, 2016 AD 20152609.
c Applicability This AD applies to ATRGIE Avions de Transport Regional Model ATR42500
airplanes, certificated in any category, with an original airworthiness certificate or original export certificate of airworthiness dated on or before July 7, 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 prevent 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 Changes This paragraph restates the requirements of paragraph g of AD 20182014, with revised figure designation and reference. For airplanes with an original airworthiness
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