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Federal Register / Vol. 86, No. 87 / Friday, May 7, 2021 / Proposed Rules www.regulations.gov by searching for and locating Docket No. FAA2021
0175; 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 SNPRM, 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, Aerospace Engineer, Cabin Safety & Environmental Systems Section, Los Angeles ACO Branch, Compliance & Airworthiness Division, 3960 Paramount Blvd., Lakewood, CA
90712; telephone 5626275371; email blaine.williams@faa.gov.
SUPPLEMENTARY INFORMATION:
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.
FAA20210175; Project Identifier 2001SW33AD 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 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 SNPRM
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 SNPRM, 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
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will not be placed in the public docket of this SNPRM. Submissions containing CBI should be sent to Blaine Williams, Aerospace Engineer, Cabin Safety &
Environmental Systems Section, Los Angeles ACO Branch, Compliance &
Airworthiness Division, 3960
Paramount Blvd., Lakewood, CA 90712;
telephone 5626275371; email blaine.williams@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.
Background The DGAC, which was the Technical Agent for France, issued DGAC AD
2001061053A, dated February 21, 2001 DGAC AD 2001061053A for certain Model SA365N, SA365N1, AS365N2, and AS 365 N3 helicopters;
and DGAC AD 2001283025A, dated July 11, 2001 DGAC AD 2001283
025A for all Model SA366G1
helicopters also referred to as the Mandatory Continuing Airworthiness Information, or the MCAI, to correct an unsafe condition for those helicopters.
The FAA issued a SNPRM to amend 14 CFR part 39 by adding an AD that would apply to all Eurocopter France Model SA365N, SA365N1, AS
365N2, AS 365 N3, and SA366G1
helicopters. The FAA preceded the SNPRM with an NPRM that published in the Federal Register on December 18, 2002 67 FR 77444. The NPRM
proposed to require inspecting the frame for the correct edge distance of the four attachment holes of the stretcher support and for a crack, and repairing the frame, if necessary. The NPRM was prompted by a quality control check that revealed some stretcher attachment holes were improperly located on the frame where there was insufficient edge distance.
The first SNPRM published in the Federal Register on March 11, 2004 69
FR 11556. The first SNPRM retained the proposed requirements of the NPRM
and added recurring inspections and references to an engineering report that lists approved U.S. alternative fasteners and materials that may be used in any required repairs. Additionally, the first SNPRM stated that the FAA determined that it is unnecessary to require installation of a reinforcing angle and instead will require a 550-hour repetitive inspection for those helicopters that have an edge distance on the frame of less than 5 millimeters mm, are not cracked, and have not been repaired.

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Actions Since the SNPRM Was Issued Since the FAA issued the first SNPRM, a significant amount of time elapsed requiring the FAA to reopen the comment period to allow the public a chance to comment on the proposed actions.
Additionally, since the FAA issued the first SNPRM, Eurocopter France has changed its name to Airbus Helicopters.
The FAA has revised references to the manufacturers name specified throughout this SNPRM to identify the manufacturers name as published in the most recent type certificate data sheet for the affected models and updates the contact information to obtain service documentation. This SNPRM also updates the estimated cost information.
Furthermore, since the FAA issued the first SNPRM, EASA has become the Technical Agent for the Member States of the European Union, which includes France. EASA is now the State of Design Authority for the affected helicopter models.
The FAAs Aircraft Certification Service has also changed its organizational structure. The new structure replaces product directorates with functional divisions. The FAA
revised some of the office titles and nomenclature throughout this proposed AD to reflect the new organizational changes. Additional information about the new structure can be found in the Notice published on July 25, 2017 82
FR 34564.
Clarification of Requirement To Install a Reinforcing Angle The preamble of the first SNPRM
stated that it was unnecessary to require the installation of a reinforcing angle but that action was included as a requirement in the body of the first SNPRM. This second SNPRM retains that installation requirement, which corresponds with the requirements of the DGAC ADs and addresses the identified unsafe condition.
Docket Number Change For transparency and as part of the FAAs on-going docket management consolidation efforts, the FAA is transferring the docket for this SNPRM
to the Federal Docket Management System FDMS. The new Docket Number No. is FAA20210175. The old Docket No., which is 2001SW33
AD, became the Project Identifier.
Related Service Information Under 1
CFR Part 51
DGAC AD 2001061053A and DGAC AD 2001283025A describe procedures for measuring the edge
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