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Federal Register / Vol. 86, No. 43 / Monday, March 8, 2021 / Rules and Regulations
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 adding the following new airworthiness directive:

20210417 Airbus Helicopters:
Amendment 3921439; Docket No.
FAA20210095; Project Identifier MCAI202001658R.
a Effective Date This airworthiness directive AD becomes effective March 23, 2021.
b Affected ADs None.
c Applicability This AD applies to Airbus Helicopters Model AS350B, AS350BA, AS350B1, AS350B2, AS350D, AS355E, AS355F, AS355F1, AS355F2, and AS355N
helicopters, certificated in any category, with a tail rotor T/R blade part number P/N
listed in Appendix 1, Table 1, of European Union Aviation Safety Agency EASA AD
20200224R1, dated November 11, 2020
EASA AD 20200224R1 pre-mod 075580.
d Subject Joint Aircraft System Component JASC
Code 6410, Tail Rotor Blades.
e Reason This AD was prompted by two reports of debonding of the T/R blade leading edge protection shields. The FAA is issuing this AD to prevent failure of the T/R blade, which could result in loss of tail rotor control and subsequent loss of control of the helicopter.

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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, EASA AD 20200224R1.
h Exceptions to EASA AD EASA AD 2020
0224R1
1 Where EASA AD 20200224R1 refers to flight hours FH, this AD requires using hours time-in-service.

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2 Where EASA AD 20200224R1 refers to October 20, 2020 the effective date of the original issuance of its AD EASA AD 2020
0224E, dated October 16, 2020 and its effective date, this AD requires using the effective date of this AD.
3 Where paragraph 1 of EASA AD 2020
0224R1 specifies visually inspecting each T/
R blade leading edge protection shield with instructions in the service information, this AD requires visually checking each T/R blade leading edge protection shield and bonding strip for a distortion, dent, and scratch;
visually checking the area surrounding each T/R blade leading edge protection along the skin length for a gap; and visually checking the area surrounding the bonding strip for a crack. These visual checks may be performed by the owner/operator pilot holding at least a private pilot certificate and must be entered into the aircraft records showing compliance with this AD in accordance with 14
CFR 43.9a1 through 4 and 14 CFR
91.417a2v. The record must be maintained as required by 14 CFR 91.417, 121.380, or 135.439.
4 Where paragraph 5 of EASA AD 2020
0224R1 specifies the modification of replacing each affected part with a serviceable part, this AD does not require this modification.
5 The Remarks section of EASA AD
20200224R1 does not apply to this AD.
i Parts Installation Prohibition As of the effective date of this AD, do not install a T/R blade identified in paragraph c of this AD on any helicopter.
j Special Flight Permit Special flight permits are prohibited if an installed T/R blade does not pass the visual or tap inspections.
k 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 l1 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.
l Related Information 1 For more information about this AD, contact Kristi Bradley, Aviation Safety Engineer, General Aviation & Rotorcraft Section, International Validation Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX
76177; telephone 817 2225110; email kristin.bradley@faa.gov.
m Material Incorporated by Reference 1 The Director of the Federal Register approved the incorporation by reference
PO 00000

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IBR 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 this AD specifies otherwise.
i European Union Aviation Safety Agency EASA AD 20200224R1, dated November 11, 2020.
ii Reserved 3 For EASA AD 20200224R1, contact the EASA, Konrad-Adenauer-Ufer 3, 50668
Cologne, Germany; telephone +49 221 8999
000; email ADs@easa.europa.eu; internet www.easa.europa.eu. You may find this EASA AD on the EASA website at https
ad.easa.europa.eu.
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.
This material may be found in the AD docket on the internet at https
www.regulations.gov by searching for and locating Docket No. FAA20210095.
5 You may view this material 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 February 10, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202104803 Filed 3421; 11:15 am BILLING CODE 491013P

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20170682; Product Identifier 2017SW028AD; Amendment 3921433; AD 20210412
RIN 2120AA64

Airworthiness Directives; Robinson Helicopter Company Helicopters Federal Aviation Administration FAA, DOT.
ACTION: Final rule.
AGENCY:

The FAA is adopting a new airworthiness directive AD for Robinson Helicopter Company Robinson Model R66 helicopters. This AD was prompted by reports of tail rotor T/R drive shaft forward hanger bearing failures. This AD requires installing a certain part numbered kit and removing parts from service or replacing a certain part-numbered T/R drive shaft assembly. This AD also prohibits the installation of certain parts. The FAA is
SUMMARY:

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