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Federal Register / Vol. 86, No. 94 / Tuesday, May 18, 2021 / Rules and Regulations Airplanes, Attention: Contractual & Data Services C&DS, 2600 Westminster Blvd., MC 110SK57, Seal Beach, CA 907405600;
telephone 5627971717; internet https
www.myboeingfleet.com.
4 You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 2062313195.
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 April 7, 2021.
Ross Landes, Deputy Director for Regulatory Operations, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202110562 Filed 51421; 4:15 pm BILLING CODE 491013P

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20210092; Project Identifier MCAI202001501R; Amendment 3921528; AD 20210914
RIN 2120AA64

Airworthiness Directives; Airbus Helicopters Type Certificate Previously Held by Eurocopter France Helicopters Federal Aviation Administration FAA, DOT.
ACTION: Final rule.
AGENCY:

The FAA is superseding Airworthiness Directive AD 201016
51, which applied to certain Eurocopter France now Airbus Helicopters Airbus Model SA330J helicopters. AD
20101651 required inspecting for a gap between the main gearbox MGB oil cooling fan assembly fan rotor blade and the upper section of the guide vane bearing housing and depending on the results, replacing the two fan rotor shaft bearings with two airworthy bearings.
This AD retains the requirements of AD
20101651 and also requires installing improved MGB fan rotor shaft bearings and repetitively inspecting the new improved MGB fan rotor shaft bearings, as specified in a European Union Aviation Safety Agency EASA AD, which is incorporated by reference. AD
20101651 was prompted by the separation of a fan rotor blade that caused puncture holes in the
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SUMMARY:

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transmission deck. This new AD was prompted by the development of an improved MGB fan rotor shaft bearing design. The FAA is issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective June 22, 2021.
The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD
as of June 22, 2021.
ADDRESSES: For material incorporated by reference IBR in this AD, contact 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 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
0092.
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
0092; 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, 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:
Mahmood Shah, Aerospace Engineer, Certification Section, Fort Worth ACO
Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone 817
2225538; email Mahmood.g.shah@
faa.gov.
SUPPLEMENTARY INFORMATION:
Background EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD 20200171, dated July 28, 2020 EASA AD 2020
0171, to correct an unsafe condition for all Airbus Helicopters, Eurocopter, Eurocopter France, Aerospatiale, Sud Aviation Model SA 330 J helicopters.
The FAA issued a notice of proposed rulemaking NPRM to amend 14 CFR

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part 39 to supersede AD 20101651, Amendment 3916410 75 FR 53857, September 2, 2010 AD 20101651.
AD 20101651 applied to Eurocopter France now Airbus Model SA330J
helicopters. The NPRM published in the Federal Register on February 26, 2021
86 FR 11657. The NPRM was prompted by the newly developed MGB
fan rotor shaft bearing design. The NPRM proposed to continue to require the inspections required by AD 2010
1651, as specified in EASA AD 2020
0171. The NPRM also proposed to require installing improved MGB fan rotor shaft bearings and repetitively inspecting the new improved MGB fan rotor shaft bearings, as specified in EASA AD 20200171.
The FAA is issuing this AD to prevent rotor burst of the MGB fan, damage to the hydraulic lines and flight controls, and subsequent loss of control of the helicopter. See EASA AD 20200171 for additional background information.
Discussion of Final Airworthiness Directive Comments The FAA gave the public the opportunity to participate in developing this final rule. The FAA received no comments on the NPRM or on the determination of the cost to the public.
Conclusion The FAA reviewed the relevant data and determined that air safety and the public interest require adopting this final rule as proposed.
Related Service Information Under 1
CFR Part 51
For MGB fan rotor shaft bearings both rear and front part number P/N
704A33651114 manufacturer P/N MP/
N 205FFTX74K6G33 and MGB fan rotor shaft bearings both rear and front P/N 704A33651268 MP/N 594918, EASA AD 20200171 describes procedures for inspecting for play a gap between the MGB fan rotor blade and the upper section of the guide vane bearing housing. If there is play that does not meet the minimum requirement, EASA AD 20200171
requires replacing the affected MGB fan rotor shaft bearings with MGB fan rotor shaft bearings both rear and front P/N
704A33651268 MP/N 594918.
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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