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Federal Register / Vol. 86, No. 171 / Wednesday, September 8, 2021 / Rules and Regulations
chafing of a wire in the alternating current AC power system cable assembly, due to a protective grommet incorrectly installed in the emergency bus interlock compartment. Insufficient clearance between a protective grommet and the cable assemblies that pass through it could result in chafing of the cable assemblies. The FAA is issuing this AD to address incorrect installation of a protective grommet in the emergency bus interlock compartment and chafed wiring in the AC power system cable assembly. Chafed wiring in the AC power system cable assembly, if not addressed, could lead to a short in the AC power system, resulting in autopilot failure, possibly the loss of other avionics systems, increased pilot workload, and reduced control of the helicopter.

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Related IBR Material Under 1 CFR Part 51
EASA AD 20200192 specifies procedures for a one-time inspection of the clearance between a protective grommet installed in the emergency bus interlock compartment and the cable assemblies passing through it, and corrective actions. The corrective actions include replacing the existing grommet with a new grommet, inspecting the cable assemblies for damage including chafing and replacing affected cable assemblies, and reworking the bulkhead in the emergency bus interlock compartment.
The rework of the bulkhead includes removing paint and primer, reworking the lightening hole, deburring the hole, applying chemical film protection, and priming all bare metal surfaces.
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.
FAAs Determination These products have been approved by the aviation authority of another country, and are 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 referenced above. The FAA is issuing this AD after evaluating all pertinent information and determining that the unsafe condition exists and is likely to exist or develop on other products of these same type designs.
Requirements of This AD
This AD requires accomplishing the actions specified in EASA AD 2020
0192, described previously, as
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incorporated by reference, except for any differences identified as exceptions in the regulatory text of this AD.
Explanation of Required Compliance Information In the FAAs ongoing efforts to improve the efficiency of the AD
process, the FAA initially worked with Airbus and EASA to develop a process to use certain EASA ADs as the primary source of information for compliance with requirements for corresponding FAA ADs. The FAA has since coordinated with other manufacturers and civil aviation authorities CAAs to use this process. As a result, EASA AD
20200192 is incorporated by reference in this FAA final rule. This AD
therefore, requires compliance with EASA AD 20200192 in its entirety, through that incorporation, except for any differences identified as exceptions in the regulatory text of this AD. Using common terms that are the same as the heading of a particular section in the EASA AD does not mean that operators need comply only with that section. For example, where the AD requirement refers to all required actions and compliance times, compliance with this AD requirement is not limited to the section titled Required Actions and Compliance Times in the EASA
AD. Service information specified in EASA AD 20200192 that is required for compliance with EASA AD 20200192
is available on the internet at https
www.regulations.gov by searching for and locating Docket No. FAA2021
0607.
FAAs Justification and Determination of the Effective Date Section 553b3B of the Administrative Procedure Act APA 5
U.S.C. 551 et seq. authorizes agencies to dispense with notice and comment procedures for rules when the agency, for good cause finds that those procedures are impracticable, unnecessary, or contrary to the public interest. Under this section, an agency, upon finding good cause, may issue a final rule without providing notice and seeking comment prior to issuance.
Further, section 553d of the APA
authorizes agencies to make rules effective in less than thirty days, upon a finding of good cause.
There are currently no domestic operators of these products. Therefore, the FAA finds that notice and opportunity for prior public comment are unnecessary pursuant to 5 U.S.C.
553b3B. In addition, for the foregoing reason, the FAA finds that good cause exists pursuant to 5 U.S.C.

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553d for making this amendment effective in less than 30 days.
Comments Invited The FAA invites you to send any written relevant data, views, or arguments about this AD. Send your comments to an address listed under ADDRESSES. Include Docket No. FAA
20210607; Project Identifier MCAI
202001249R at the beginning of your comments. The most helpful comments reference a specific portion of the AD, 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 AD 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 AD.
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 AD 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 AD, 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 AD. Submissions containing CBI
should be sent to Jacob Fitch, Aerospace Engineer, COS Program Management Section, Operational Safety Branch, Compliance & Airworthiness Division, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone 817 222
4130; email jacob.fitch@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.
Regulatory Flexibility Act RFA
The requirements of the RFA do not apply when an agency finds good cause pursuant to 5 U.S.C. 553 to adopt a rule without prior notice and comment.
Because the FAA has determined that it
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