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Federal Register / Vol. 86, No. 160 / Monday, August 23, 2021 / Proposed Rules the Bombardier Challenger 300
Imperial Version Airplane Flight Manual, Publication No. CSP 1001, Revision 63, dated April 1, 2021. For obtaining this section of the Bombardier Challenger 300 Imperial Version Airplane Flight Manual, Publication No.
CSP 1001, use Document Identification No. CH 300 AFMI.
Section 0319, Electrical, of Chapter 03, Emergency Procedures, of the Bombardier Challenger 350 Airplane Flight Manual, Publication No. CH 350
AFM, Revision 29, dated April 1, 2021.
Section 0519, Electrical, of Chapter 05, Non-Normal Procedures, of the Bombardier Challenger 350 Airplane Flight Manual, Publication No. CH 350
AFM, Revision 29, dated April 1, 2021.
These documents are distinct since they apply to different airplane configurations. 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 proposing this AD because the FAA
evaluated all the relevant information and determined the unsafe condition described previously is likely to exist or develop on other products of the same type design.
Proposed AD Requirements in This NPRM
This proposed AD would require revising the existing AFM and applicable corresponding operational procedures to incorporate procedures to be applied during erroneous electrical status indication conditions.
Explanation of Incorporating Information Specified in an AFM
Revision This proposed AD would require including the information that is provided in the referenced AFM
revisions in paragraph g of this proposed AD. The language in
paragraph g of this proposed AD is designed to allow incorporating the specific information, regardless of the revision level of the AFM in use, provided the language is identical to the referenced AFM revisions specified in paragraph g of this proposed AD. The language in a later revision of the Bombardier Challenger 300 Imperial Version Airplane Flight Manual, Publication No. CSP 1001 that is the same as the language in Bombardier Challenger 300 Imperial Version Airplane Flight Manual, Publication No.
CSP 1001, Revision 63, dated April 1, 2021; or in a later revision of the Bombardier Challenger 350 Airplane Flight Manual, Publication No. CH 350
AFM that is the same as the language in Bombardier Challenger 350 Airplane Flight Manual, Publication No. CH 350
AFM, Revision 29, dated April 1, 2021;
may be incorporated.
Costs of Compliance The FAA estimates that this AD, if adopted as proposed, would affect 275
airplanes of U.S. registry. The FAA
estimates the following costs to comply with this proposed AD:

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ESTIMATED COSTS FOR REQUIRED ACTIONS
Labor cost
Parts cost
Cost per product
Cost on U.S.
operators
1 work-hour $85 per hour = $85

$0

$85

$23,375

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.

13132. This proposed 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 proposed regulation:
1 Is not a significant regulatory action under Executive Order 12866, 2 Would not affect intrastate aviation in Alaska, and 3 Would not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act.

Regulatory Findings The FAA determined that this proposed AD would not have federalism implications under Executive Order
Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 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.

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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 adding the following new airworthiness directive:

Bombardier, Inc.: Docket No. FAA2021
0691; Project Identifier MCAI2020
01542T.
a Comments Due Date The FAA must receive comments on this airworthiness directive AD by October 7, 2021.
b Affected ADs None.
c Applicability
The Proposed Amendment
PO 00000

PART 39AIRWORTHINESS
DIRECTIVES

This AD applies to Bombardier, Inc., Model BD1001A10 airplanes, certificated in any category, serial numbers 20003 and subsequent.

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