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Federal Register / Vol. 86, No. 160 / Monday, August 23, 2021 / Rules and Regulations 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.
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 20201911, Amendment 3921254 85
FR 59404, September 22, 2020; and b. Adding the following new airworthiness directive:

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20211606 Leonardo S.p.a.: Amendment 3921668; Docket No. FAA20210373;
Project Identifier MCAI202001352R.
a Effective Date This airworthiness directive AD is effective September 27, 2021.
b Affected ADs This AD replaces AD 20201911, Amendment 3921254 85 FR 59404, September 22, 2020.

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c Applicability This AD applies to Leonardo S.p.a. Model A119 and AW119 MKII helicopters, certificated in any category, with 90-degree tail rotor gearbox TGB part number P/N
109044006101 or 109044006105, and with TGB shaft P/N 109044303107 having a serial number S/N listed in Table 1 of Leonardo Helicopters Alert Service Bulletin No. 119090, Revision A, dated September 14, 2020 ASB 119090, installed.
Note 1 to paragraph c: A TGB shaft is also referred to as a mast gear assembly.
d Subject Joint Aircraft Service Component JASC
Code: 6510, Tail Rotor Drive Shaft.
e Unsafe Condition This AD was prompted by two occurrences of corrosion on the internal surface of the TGB shaft. The FAA is issuing this AD to detect corrosion of the TGB shaft. The unsafe condition, if not addressed, could result in failure of the tail rotor, possibly resulting in reduced control of the helicopter.
f Compliance Comply with this AD within the compliance times specified, unless already done.
g Required Actions 1 Within 25 hours time-in-service TIS or 3 months, whichever occurs first after the effective date of this AD, and thereafter at intervals not to exceed 6 months, borescope inspect the entire internal surface of the TGB
shaft for corrosion. Refer to Detail A of Figure 1 of ASB 119090, for a depiction of the entry point for the borescope. If there is corrosion, before further flight, remove the TGB from service.
2 As of the effective date of this AD, do not install on any helicopter any TGB P/N
109044006101 or 109044006105 that has TGB shaft P/N 109044303107 having an S/N listed in Table 1 of ASB 119090, unless the actions required by paragraph g1 of this AD have been accomplished.
h Special Flight Permits A special flight permit may be permitted provided that there are no passengers onboard.
i Alternative Methods of Compliance AMOCs 1 The Manager, International Validation Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the International Validation Branch, send it to the attention of the person identified in paragraph j1 of this AD.
Information may be emailed to: 9-AVS-AIR730-AMOC@faa.gov.
2 Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/
certificate holding district office.

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j Related Information 1 For more information about this AD, contact Rao Edupuganti, Aerospace Engineer, Dynamic Systems Section, Technical Innovation Policy Branch, Policy &
Innovation Division, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone 817 2225110; email rao.edupuganti@
faa.gov.
2 The subject of this AD is addressed in European Union Aviation Safety Agency EASA AD 20200206, dated September 30, 2020. You may view the EASA AD at https
www.regulations.gov in Docket No. FAA
20210373.
k Material Incorporated by Reference 1 The Director of the Federal Register approved the incorporation by reference of the service information listed in this paragraph under 5 U.S.C. 552a and 1 CFR
part 51.
2 You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise.
i Leonardo Helicopters Alert Service Bulletin No. 119090, Revision A, dated September 14, 2020.
ii Reserved 3 For service information identified in this AD, contact Leonardo S.p.A. Helicopters, Emanuele Bufano, Head of Airworthiness, Viale G.Agusta 520, 21017 C.Costa di Samarate Va Italy; telephone +390331
225074; fax +390331229046; or at https
customerportal.leonardocompany.com/enUS/.
4 You may view this service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call 817 2225110.
5 You may view this service information that is incorporated by reference at the National Archives and Records Administration NARA. For information on the availability of this material at NARA, email: fedreg.legal@nara.gov, or go to:
https www.archives.gov/federal-register/cfr/
ibr-locations.html.
Issued on August 16, 2021.
Ross Landes, Deputy Director for Regulatory Operations, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202117951 Filed 82021; 8:45 am BILLING CODE 491013P

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 71
Docket No. FAA20210648; Amendment No. 7153
RIN 2120AA66

Airspace Designations; Incorporation by Reference Federal Aviation Administration FAA, DOT.

AGENCY:

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