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Federal Register / Vol. 86, No. 129 / Friday, July 9, 2021 / Proposed Rules 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.

Bombardier, Inc.: Docket No. FAA2021
0560; Project Identifier MCAI2021
00192T.

List of Subjects in 14 CFR Part 39

b Affected ADs None.

Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.
The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 14 CFR part 39 as follows:
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 adding the following new airworthiness directive:

a Comments Due Date The FAA must receive comments on this airworthiness directive AD by August 23, 2021.

c Applicability This AD applies to Bombardier, Inc., Model BD7001A10 and BD7001A11
airplanes, certificated in any category, serial numbers 9002 through 9879 inclusive, 9998, 60001 through 60005 inclusive, 60007, 60009, 60015, 60016, and 60024.
d Subject Air Transport Association ATA of America Code 71, Powerplant.
e Unsafe Condition This AD was prompted by reports that the sliding bushings in the forward engine mount system were missing. The FAA is issuing this AD to address redistribution of load/stress on the mount components, which may decrease the component fatigue life; failure of the mount structural components could result in the loss of the engine attachment to the airframe.

36245

f Compliance Comply with this AD within the compliance times specified, unless already done.
g Inspection and Corrective Action Within 15 months or 750 flight hours, whichever occurs first, after the effective date of this AD: Verify the proper installation of the sliding bushings by doing an inspection gap check for discrepancies of the front and aft engine mounts, in accordance with paragraphs 2.B. through 2.F. of the Accomplishment Instructions of the applicable service information specified in figure 1 to paragraph g of this AD. If any discrepancy is found: Before further flight, repair using a method approved by the Manager, New York ACO Branch, FAA; or Transport Canada Civil Aviation TCCA; or Bombardier, Inc.s TCCA Design Approval Organization DAO. If approved by the DAO, the approval must include the DAOauthorized signature. Where a serial number is identified in more than one row in figure 1 to paragraph g of this AD, the applicable service information is identified based on the marketing designations in paragraph 1.M., Equivalent Service Bulletins, of each service information.
BILLING CODE 491013P

Serial Number-

Model-

Bombardier Service Bulletin-

9002 to 9312 inclusive, 9314 to 9380 inclusive, and 9384 to 9429 inclusive
BD-700-lAl0 700-71-005, dated December 14, airplanes 2020

9313, 9381, 9432 to 9860
inclusive, 9863 to 9871
inclusive, 9873 to 9879
inclusive, 60005 and 60024

BD-700-lAl0 700-71-6005, December 14, airplanes 2020

9861, 9872, 60001 to 60004
inclusive, 60009, and 60016

BD-700-lAl0 700-71-6501, December 14, airplanes 2020

9127 to 9383 inclusive, 9389 to 9400 inclusive, 9404 to 943 linclusive, and 9998

BD-700-lAll airplanes
9386, 9401, 9445 to 9862
inclusive, and 9868 to 9879
inclusive
BD-700-lAl 1 700-71-5005, dated December airplanes 14,2020

60007 and 60015

BD-700-lAl 1 700-71-5501, dated December 14,2020
airplanes
700-lAl l-71-005, dated December 14, 2020

BILLING CODE 491013C

VerDate Sep<11>2014

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Figure 1 to paragraph g - Service Information