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Federal Register / Vol. 86, No. 107 / Monday, June 7, 2021 / Rules and Regulations
n 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 certification office, send it to the attention of the person identified in paragraph o1 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.
o Related Information 1 For more information about this AD, contact Anthony Kenward, Aerospace Engineer, AIR7F1, Fort Worth ACO Branch, FAA, 10101 Hillwood Parkway, Fort Worth, TX 78101; telephone 817 2225152; email Anthony.Kenward@faa.gov.
2 The subject of this AD is addressed in European Aviation Safety Agency now European Union Aviation Safety Agency EASA AD 20170164, dated September 4, 2017. You may view the EASA AD on the internet at https www.regulations.gov in the AD Docket.

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p 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 169023, Revision B, dated April 16, 2018.
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
www.leonardocompany.com/en/home.
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.

VerDate Sep<11>2014

16:24 Jun 04, 2021

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Issued on May 19, 2021.
Gaetano A. Sciortino, Deputy Director for Strategic Initiatives, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202111806 Filed 6421; 8:45 am BILLING CODE 491013P

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20210196; Project Identifier 2018SW021AD; Amendment 3921571; AD 20211109
RIN 2120AA64

Airworthiness Directives; Airbus Helicopters Deutschland GmbH
Helicopters Federal Aviation Administration FAA, DOT.
ACTION: Final rule.
AGENCY:

The FAA is adopting a new airworthiness directive AD for Airbus Helicopters Deutschland GmbH Model MBBBK 117 A1, MBBBK 117 A3, MBBBK 117 A4, MBBBK 117 B1, MBBBK 117 B2, and MBBBK 117 C
1 helicopters. This AD was prompted by an analysis of the main rotor M/R
blade loop area. This AD requires repetitive inspections of certain M/R
blade thimble areas and corrective actions if necessary, as specified in a European Aviation Safety Agency now European Union Aviation Safety Agency EASA AD, which is incorporated by reference IBR. The FAA is issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective July 12, 2021.
The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD
as of July 12, 2021.
ADDRESSES: For EASA material in this AD, contact EASA, Konrad-AdenauerUfer 3, 50668 Cologne, Germany;
telephone +49 221 8999 000; email ADs@easa.europa.eu; internet www.easa.europa.eu. You may find this material on the EASA website at https
ad.easa.europa.eu. You may view this material 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. It is also available on the internet at https
www.regulations.gov by searching for and locating Docket No. FAA2021
0196.
SUMMARY:

PO 00000

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Examining the AD Docket You may examine the AD docket on the internet at https
www.regulations.gov by searching for and locating Docket No. FAA2021
0196; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays.
The AD docket contains this final rule, the EASA AD, any comments received, and other information. The address for Docket Operations is U.S. Department of Transportation, Docket Operations, M
30, West Building Ground Floor, Room W12140, 1200 New Jersey Avenue SE, Washington, DC 20590.
FOR FURTHER INFORMATION CONTACT:
Kathleen Arrigotti, Aerospace Engineer, Large Aircraft Section, International Validation Branch, FAA, 2200 South 216th St., Des Moines, WA; telephone 206 2313218; email kathleen.arrigotti@faa.gov.
SUPPLEMENTARY INFORMATION:
Background EASA, which is the Technical Agent for the Member States of the European Community, has issued EASA AD 2018
0061, dated March 20, 2018 EASA AD
20180061, to correct an unsafe condition for Airbus Helicopters Deutschland GmbH AHD formerly Eurocopter Deutschland GmbH, Eurocopter Hubschrauber GmbH, Messerschmitt-Bolkow-Blohm GmbH, Airbus Helicopters Inc. formerly American Eurocopter LLC Model MBB
BK117 A1, MBBBK117 A3, MBB
BK117 A4, MBBBK117 B1, MBB
BK117 B2, and MBBBK117 C1
helicopters, all serial numbers.
The FAA issued a notice of proposed rulemaking NPRM to amend 14 CFR
part 39 by adding an AD that would apply to Airbus Helicopters Deutschland GmbH Model MBBBK 117
A1, MBBBK 117 A3, MBBBK 117
A4, MBBBK 117 B1, MBBBK 117
B2, and MBBBK 117 C1 helicopters with an affected angle 0 parts or affected angle 1 parts installed, as identified in EASA AD 20180061. The NPRM published in the Federal Register on March 26, 2021 86 FR
16121. The NPRM was prompted by new test results from an analysis of the M/R blade loop area, which revealed that certain M/R blade thimbles require reduced inspection intervals. The NPRM proposed to require repetitive inspections of certain M/R blade thimble areas and corrective actions if necessary, as specified in EASA AD
20180061. The FAA is issuing this AD
to address composite failure of the M/
R blades, resulting in loss of control of
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