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Federal Register / Vol. 86, No. 43 / Monday, March 8, 2021 / Rules and Regulations 350 B1, AS350 B2, AS 350 D, AS 355
E, AS 355 F, AS 355 F1, AS 355 F2, and AS 355 N helicopters, whereas this AD
applies to Model AS350B, AS350BA, AS350B1, AS350B2, AS350D, AS355E, AS355F, AS355F1, AS355F2, and AS355N helicopters with certain partnumbered T/R blades installed instead.
This AD does not apply to Model AS
350 BB because this model is not FAA
type-certificated. The EASA AD requires visually inspecting each T/R blade leading edge protection shield. This AD
requires visually checking each T/R
blade leading edge protection shield and bonding strip instead and allows a pilot to accomplish these visual checks. The EASA AD requires a longer-term modification of replacing each affected part with a serviceable part, whereas this AD does not. The FAA plans to publish a notice of proposed rulemaking to give the public an opportunity to comment on this longer-term requirement.

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FAAs Justification and Determination of the Effective Date Section 553b3B of the Administrative Procedure Act 5 U.S.C.
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 seeking comment prior to the rulemaking.
An unsafe condition exists that requires the immediate adoption of this AD without providing an opportunity for public comments prior to adoption.
The FAA has found that the risk to the flying public justifies waiving notice and comment prior to adoption of this rule because the visual repetitive checks must be done before each flight and the initial instance of the repetitive tap inspections must be done within 30
hours time-in-service, a time period of up to about 1.5 months based on the average flight-hour utilization rate of these helicopters. Accordingly, the compliance time for the required actions is shorter than the time necessary for the public to comment and for publication of the final rule. Therefore, notice and opportunity for prior public comment are impracticable and contrary to public interest pursuant to 5 U.S.C.
553b3B. In addition, for the reasons stated above, the FAA finds that good cause exists pursuant to 5 U.S.C. 553d for making this amendment effective in less than 30 days.

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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
20210095; Project Identifier MCAI
202001658R 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 Kristi Bradley, Aviation Safety Engineer, General Aviation & Rotorcraft Section, International Validation Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX
76177; telephone 817 2225110; email kristin.bradley@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 has good cause to adopt this rule
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without notice and comment, RFA
analysis is not required.
Costs of Compliance The FAA estimates that this AD
affects 450 helicopters of U.S. Registry.
Labor rates are estimated at $85 per work-hour. Based on these numbers, the FAA estimates the following costs to comply with this AD.
Visually checking the T/R blades takes about 0.25 work-hour for an estimated cost of $21 per helicopter and $9,450 for the U.S. fleet, per inspection cycle. Tap inspecting the T/R blades takes about 0.5 work-hour for an estimated cost of $43 per helicopter and $19,350 for the U.S. fleet, per inspection cycle. Replacing a T/R blade takes about 12 work-hours and parts cost about $10,000 for an estimated cost of $11,020
per T/R blade.
Authority for This Rulemaking 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 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.
Regulatory Findings The FAA determined that this AD
would not have federalism implications under Executive Order 13132. This AD
would 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 this regulation:
1 Is not a significant regulatory action under Executive Order 12866, and 2 Will not affect intrastate aviation in Alaska.

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