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Federal Register / Vol. 86, No. 177 / Thursday, September 16, 2021 / Rules and Regulations and locating Docket No. FAA2021
0701 after this AD is published.
FAAs Justification and Determination of the Effective Date There are currently no domestic operators of these products. Therefore, the FAA finds that notice and opportunity for prior public comment are unnecessary and that good cause exists 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
20210701; Project Identifier MCAI
202100365T at the beginning of your comments. The most helpful comments reference a specific portion of the final rule, 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 final rule 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 final rule.
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 Krista Greer, Aerospace Engineer, Large Aircraft Section, International Validation Branch, FAA, 2200 South 216th St., Des Moines, WA 98198; telephone and fax 2062313221. Any commentary that the FAA receives which is not
specifically designated as CBI will be placed in the public docket for this rulemaking.
Interim Action The FAA considers this AD interim action. Investigation into failures in engines similar to those installed on the affected airplanes will enable the manufacturer to obtain better insight into the nature, cause, and extent of the IFSDs, and eventually to develop final action to address the unsafe condition.
Once final action has been identified, the FAA might consider further 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 has good cause to adopt this rule without notice and comment, RFA
analysis is not required.
Costs of Compliance Currently, there are no affected U.S.registered airplanes. If an affected airplane is imported and placed on the U.S. Register in the future, the FAA
provides the following cost estimates to comply with this AD:

ESTIMATED COSTS
Action
Labor cost
Retained actions from AD 20202602
New required actions

1 work-hour $85 per hour = $85
Up to 3 work-hours $85 per hour = Up to $255

Cost per product
Parts cost $0
0

$85.
Up to $255.

According to the manufacturer, some or all of the costs of this proposed AD
may be covered under warranty, thereby reducing the cost impact on affected operators. The FAA does not control warranty coverage for affected operators.
As a result, the FAA has included all known costs in the cost estimate.

regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce.
This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action.

2 Will not affect intrastate aviation in Alaska.

Authority for This Rulemaking
Regulatory Findings
Title 49 of the United States Code specifies the FAAs authority to issue rules on aviation safety. Subtitle I, section 106, describes the authority of the FAA Administrator. Subtitle VII:
Aviation Programs, describes in more detail the scope of the Agencys authority.
The FAA is issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701: General requirements. Under that section, Congress charges the FAA
with promoting safe flight of civil aircraft in air commerce by prescribing
The FAA determined that this AD
will not have federalism implications under Executive Order 13132. This AD
will not have a substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government.
For the reasons discussed above, I
certify that this AD:
1 Is not a significant regulatory action under Executive Order 12866, and
Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows:

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List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.
Adoption of the Amendment
PART 39AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:

Authority: 49 U.S.C. 106g, 40113, 44701.
39.13

Amended
2. The FAA amends 39.13 by:
a. Removing airworthiness directive AD 20202602, Amendment 39

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