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Federal Register / Vol. 86, No. 45 / Wednesday, March 10, 2021 / Rules and Regulations 3 For service information identified in this AD, contact Airbus Helicopters, 2701 N
Forum Drive, Grand Prairie, TX 75052;
telephone 8002320323 or Fax: 972641
3775; or at https www.airbus.com/
helicopters/services/technical-support.html.
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 8172225110.
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/ibrlocations.html.
Issued on February 8, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202104806 Filed 3921; 8:45 am BILLING CODE 491013P

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20210096; Project Identifier MCAI202100040R; Amendment 3921440; AD 20210418
RIN 2120AA64

Airworthiness Directives; Airbus Helicopters Federal Aviation Administration FAA, DOT.
ACTION: Final rule; request for comments.
AGENCY:

The FAA is superseding Airworthiness Directive AD 202023
02, which applied to all Airbus Helicopters Model EC225LP helicopters.
AD 20202302 required repetitive inspections of the bearing in the swashplate assembly of the main rotor mast assembly for discrepancies ceramic balls that have a hard point or sensitive axial play or both and, depending on the findings, replacement of an affected main rotor mast assembly with a serviceable main rotor mast assembly. Since the FAA issued AD
20202302, the FAA has determined additional main rotor mast assemblies are affected by the unsafe condition.
This AD continues to require the actions specified in AD 20202302, and also includes additional affected main rotor mast assemblies; as specified in a European Union Aviation Safety Agency EASA AD, which is incorporated by reference. The FAA is issuing this AD

SUMMARY:

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to address the unsafe condition on these products.
DATES: This AD becomes effective March 25, 2021.
The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD
as of March 25, 2021.
The FAA must receive comments on this AD by April 26, 2021.
ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
Federal eRulemaking Portal: Go to https www.regulations.gov. Follow the instructions for submitting comments.
Fax: 2024932251.
Mail: U.S. Department of Transportation, Docket Operations, M
30, West Building Ground Floor, Room W12140, 1200 New Jersey Avenue SE, Washington, DC 20590.
Hand Delivery: U.S. Department of Transportation, Docket Operations, M
30, West Building Ground Floor, Room W12140, 1200 New Jersey Avenue SE, Washington, DC 20590, between 9 a.m.
and 5 p.m., Monday through Friday, except Federal holidays.
For material incorporated by reference IBR in this AD, contact the EASA, Konrad-Adenauer-Ufer 3, 50668
Cologne, Germany; phone: +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 8172225110.
It is also available in the AD docket on the internet at https
www.regulations.gov by searching for and locating Docket No. FAA2021
0096.
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
0096; 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 AD, any comments received, and other information. The street address for Docket Operations is listed above.
Comments will be available in the AD
docket shortly after receipt.
FOR FURTHER INFORMATION CONTACT:
Kathleen Arrigotti, Aerospace Engineer, Large Aircraft Section, International Validation Branch, FAA, 2200 South
PO 00000

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216th St., Des Moines, WA 98198;
phone and fax: 2062313218; email:
kathleen.arrigotti@faa.gov.
SUPPLEMENTARY INFORMATION:
Discussion The FAA issued AD 20202302, Amendment 3921318 85 FR 73607, November 19, 2020 AD 20202302, which applied to all Airbus Helicopters Model EC225LP helicopters. AD 2020
2302 required repetitive inspections of the bearing in the swashplate assembly of the main rotor mast assembly for discrepancies ceramic balls that have a hard point or sensitive axial play or both and, depending on the findings, replacement of an affected main rotor mast assembly with a serviceable main rotor mast assembly. The FAA issued AD 20202302 to address defective ceramic balls in the bearing installed in the swashplate assembly of the main rotor mast assembly, which could lead to premature spalling of the ball itself and of the bearing, loss of function of the bearing, and overload of the main rotor mast scissor, resulting in reduced control of the helicopter.
Actions Since AD 20202302 Was Issued Since the FAA issued AD 202023
02, the FAA has determined that additional main rotor mast assemblies are affected by the unsafe condition.
The EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD
20200264, dated December 2, 2020
EASA AD 20200264 also referred to as the Mandatory Continuing Airworthiness Information, or the MCAI, to correct an unsafe condition for all Airbus Helicopters Model EC225LP helicopters. EASA AD 2020
0264 supersedes EASA AD 20200079, dated April 1, 2020 which corresponds to FAA AD 20202302.
This AD was prompted by a report of a manufacturing and control issue regarding the ceramic balls in the bearing installed in the swashplate assembly of the main rotor mast assembly. The FAA is issuing this AD
to address defective ceramic balls in the bearing installed in the swashplate assembly of the main rotor mast assembly, which could lead to premature spalling of the ball itself and of the bearing, loss of function of the bearing, and overload of the main rotor mast scissor, resulting in reduced control of the helicopter. See the MCAI
for additional background information.
Explanation of Retained Requirements Although this AD does not explicitly restate the requirements of AD 2020

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