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Federal Register / Vol. 86, No. 132 / Wednesday, July 14, 2021 / Rules and Regulations
incorrect installation. This incorrect installation leads to an unprotected circuit, and therefore any wires or system components that might lie adjacent to the wiring that would normally be protected by the C9066
circuit breaker might be affected. The FAA is issuing this AD to address potential incorrect installation of the Main Deck Oxygen Alert Control circuit breaker, which could result in overheating and burning of the wiring, and consequently, could result in smoke triggering an alarm and causing the crew workload to increase; or could result in a short circuit to adjacent wires causing malfunctions in other systems. See the MCAI for additional background information.
Related Service Information Under 1
CFR Part 51
Israel Aerospace Industries, Ltd., has issued IAI-Aviation Group Alert Service Bulletin 36824098, Revision 1, dated June 2021. This service information describes procedures for a visual inspection of the wiring connection common to the C9066 circuit breaker, changes to the wiring connection, if necessary, and a test of the main deck oxygen alert system, if necessary. 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.
FAAs Determination 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 issuing this AD because the FAA
evaluated all pertinent information and determined the unsafe condition exists and is likely to exist or develop on other products of the same type design.
Requirements of This AD
This AD requires accomplishing the actions specified in the service information described previously.

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FAAs Justification and Determination of the Effective Date Section 553b3B of the Administrative Procedure Act APA 5

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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.
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 forgoing notice and comment prior to adoption of this rule because incorrect installation of the Main Deck Oxygen Alert Control circuit breaker could result in overheating and burning of wiring, and consequently, could result in smoke triggering an alarm and causing the crew workload to increase; or could result in a short circuit to adjacent wires causing malfunctions in other systems.
Furthermore, since this is a potentially unprotected circuit, if any failure occurs along the length of this circuit it could result in a fire and cause collateral damage to adjacent circuits and affect critical systems necessary for continued safe flight and landing. Accordingly, notice and opportunity for prior public comment are impracticable and contrary to the public interest pursuant to 5
U.S.C. 553b3B. In addition, the FAA finds that good cause exists pursuant to 5 U.S.C. 553d for making this amendment effective in less than 30
days, for the same reasons the FAA
found good cause to forgo notice and comment.

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.

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
20210566; Project Identifier MCAI
202100733T 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
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.

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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 Brian Hernandez, Aerospace Engineer, Systems and Equipment Section, FAA, Seattle ACO
Branch, 2200 South 216th St., Des Moines, WA 98198; phone and fax: 206
2313535; email: Brian.Hernandez@
faa.gov. Any commentary that the FAA
receives which is not specifically designated as CBI will be placed in the public docket for this rulemaking.
Regulatory Flexibility Act RFA

Costs of Compliance The FAA estimates that this AD
affects 71 airplanes of U.S. registry. The FAA estimates the following costs to comply with this AD:

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