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Federal Register / Vol. 86, No. 37 / Friday, February 26, 2021 / Proposed Rules
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: Deliver to Mail address above between 9 a.m. and 5
p.m., Monday through Friday, except Federal holidays.
For service information identified in this proposed rule, contact Airbus Helicopters, 2701 N Forum Drive, Grand Prairie, TX 75052; telephone 972641
0000 or 8002320323; fax 972641
3775; or at https www.airbus.com/
helicopters/services/technicalsupport.html. You may view this service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N 321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call 8172225110.
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
0020; 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 NPRM, 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:
Blaine Williams, Aviation Safety Engineer, Los Angeles ACO Branch, 3960 Paramount Boulevard, Lakewood, CA 907124137; telephone 562627
5371; email blaine.willaims@faa.gov.
SUPPLEMENTARY INFORMATION:

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Comments Invited The FAA invites you to send any written relevant data, views, or arguments about this proposal. Send your comments to an address listed under ADDRESSES. Include Docket No.
FAA20210020; Project Identifier MCAI202001639R at the beginning of your comments. The most helpful comments reference a specific portion of the proposal, explain the reason for any recommended change, and include supporting data. The FAA will consider all comments received by the closing date and may amend this proposal because of those comments.
Except for Confidential Business Information CBI as described in the
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following paragraph, and other information as described in 14 CFR
11.35, the FAA will post all comments received, without change, to https
www.regulations.gov, including any personal information you provide. The agency will also post a report summarizing each substantive verbal contact received about this proposal.
Confidential Business Information CBI is commercial or financial information that is both customarily and actually treated as private by its owner.
Under the Freedom of Information Act FOIA 5 U.S.C. 552, CBI is exempt from public disclosure. If your comments responsive to this NPRM
contain commercial or financial information that is customarily treated as private, that you actually treat as private, and that is relevant or responsive to this NPRM, it is important that you clearly designate the submitted comments as CBI. Please mark each page of your submission containing CBI
as PROPIN. The FAA will treat such marked submissions as confidential under the FOIA, and they will not be placed in the public docket of this NPRM. Submissions containing CBI
should be sent to Blaine Williams Aviation Safety Engineer, Los Angeles ACO Branch, 3960 Paramount Boulevard, Lakewood, CA 907124137;
telephone 5626275371; email blaine.willaims@faa.gov. Any commentary that the FAA receives that is not specifically designated as CBI will be placed in the public docket for this rulemaking.
Discussion The FAA issued AD 20190312, Amendment 3919564 84 FR 8250, March 7, 2019 AD 20190312, which applies to certain Airbus Helicopters Model EC225LP helicopters. AD 2019
0312 requires repetitively inspecting, cleaning, and lubricating each bellcrank.
The FAA issued AD 20190312 to address jammed bellcranks in the life raft jettison inflation cylinder percussion system. This condition could result in failure of a life raft to release in an emergency and subsequent injury to occupants.
Actions Since AD 20190312 Was Issued Since the FAA issued AD 201903
12, the FAA determined that the affected bellcranks must be replaced with serviceable bellcranks, which would terminate the need for the repetitive actions.
The EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD

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20190287, dated November 27, 2019
EASA AD 20190287 also referred to as the Mandatory Continuing Airworthiness Information, or the MCAI, to correct an unsafe condition for certain Airbus Helicopters Model EC225LP helicopters. EASA AD 2019
0287 supersedes EASA AD 20190102, dated May 9, 2019. EASA AD 2019
0102, dated May 9, 2019, superseded EASA AD 20160200, dated October 11, 2016, which corresponds to FAA AD
20190312.
This proposed AD was prompted by reports of jammed bellcranks in the life raft inflation cylinder percussion system. The FAA is proposing this AD
to address jammed bellcranks in the life raft jettison inflation cylinder percussion system. This condition could result in failure of a life raft to release in an emergency and subsequent injury to occupants. See the MCAI for additional background information.
Related Service Information Under 1
CFR Part 51
Airbus Helicopters has issued Alert Service Bulletin EC22525A211, Revision 1, dated October 23, 2019. This service information describes procedures for replacing any affected life raft release bellcrank with a serviceable bellcrank. This service information 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.
Other Related Service Information Airbus Helicopters has also issued Emergency Alert Service Bulletin No.
05A050, Revision 0, dated July 22, 2016;
and Emergency Alert Service Bulletin No. 05A050, Revision 1, dated April 3, 2019. This service information describes procedures for cleaning and lubricating each bellcrank and pivot link of the life raft inflation cylinder percussion system and removing any corrosion.
FAAs Determination and Requirements of This Proposed AD
This product has been approved by the aviation authority of another country, and is approved for operation in the United States. Pursuant to the FAAs bilateral agreement with the State of Design Authority, the FAA has been notified of the unsafe condition described in the MCAI and service information referenced above. The FAA
is proposing this AD after evaluating all known relevant information and determining that an unsafe condition is likely to exist or develop on other products of the same type design.

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