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Proposed Rules
Federal Register Vol. 86, No. 50
Wednesday, March 17, 2021

This section of the FEDERAL REGISTER
contains notices to the public of the proposed issuance of rules and regulations. The purpose of these notices is to give interested persons an opportunity to participate in the rule making prior to the adoption of the final rules.

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39

Examining the AD Docket
Docket No. FAA20201181; Project Identifier MCAI202001368T
RIN 2120AA64

Airworthiness Directives; Bombardier, Inc., Airplanes Federal Aviation Administration FAA, DOT.
ACTION: Notice of proposed rulemaking NPRM.
AGENCY:

The FAA proposes to adopt a new airworthiness directive AD for all Bombardier, Inc., Model CL6001A11
600, CL6002A12 601, and CL600
2B16 6013A, 6013R and 604
Variants airplanes. This proposed AD
was prompted by reports of corrosion on the passenger door internal structure of in-service airplanes. This proposed AD
would require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations.
The FAA is proposing this AD to address the unsafe condition on these products.
DATES: The FAA must receive comments on this proposed AD by May 3, 2021.
ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
Federal eRulemaking Portal: Go to https www.regulations.gov. Follow the instructions for submitting comments.
Fax: 2024932251.
Mail: U.S. Department of Transportation, Docket Operations, M30, West Building Ground Floor, Room W12140, 1200 New Jersey Avenue SE, Washington, DC 20590.
Hand Delivery: Deliver to Mail address above between 9 a.m. and 5
p.m., Monday through Friday, except Federal holidays.
For service information identified in this NPRM, contact Bombardier, Inc.,
jbell on DSKJLSW7X2PROD with PROPOSALS

SUMMARY:

VerDate Sep<11>2014

17:42 Mar 16, 2021

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200 Cote-Vertu Road West, Dorval, Quebec H4S 2A3, Canada; North America toll-free telephone 1866538
1247 or direct-dial telephone 1514
8552999; email ac.yul@
aero.bombardier.com; internet http
www.bombardier.com. You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 2062313195.
You may examine the AD docket on the internet at https
www.regulations.gov by searching for and locating Docket No. FAA2020
1181; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays.
The AD docket contains this NPRM, any comments received, and other information. The street address for Docket Operations is listed above.
Aziz Ahmed, Aerospace Engineer, Airframe and Propulsion Section, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
telephone 5162287329; fax 516794
5531; email 9-avs-nyaco-cos@faa.gov.

FOR FURTHER INFORMATION CONTACT:

SUPPLEMENTARY INFORMATION:

Comments Invited The FAA invites you to send any written relevant data, views, or arguments about this proposal. Send your comments to an address listed under ADDRESSES. Include Docket No.
FAA20201181; Project Identifier MCAI202001368T at the beginning of your comments. The most helpful comments reference a specific portion of the proposal, 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 the proposal 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
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contact received about this proposed 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 NPRM
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 NPRM, 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 NPRM. Submissions containing CBI
should be sent to Aziz Ahmed, Aerospace Engineer, Airframe and Propulsion Section, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
telephone 5162287329; fax 516794
5531; email 9-avs-nyaco-cos@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.
Discussion Transport Canada Civil Aviation TCCA, which is the aviation authority for Canada, has issued Canadian AD
CF201637, dated November 25, 2016
also referred to after this as the Mandatory Continuing Airworthiness Information, or the MCAI, to correct an unsafe condition for all Bombardier, Inc., Model CL6001A11 600, CL
6002A12 601, and CL6002B16
6013A, 6013R, and 604 Variants airplanes. You may examine the MCAI
in the AD docket on the internet at https www.regulations.gov by searching for and locating Docket No.
FAA20201181.
This proposed AD was prompted reports of corrosion on the passenger door internal structure of in-service airplanes caused by an accumulation of moisture under the epoxy ramp. This proposed AD would require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. The FAA is proposing this
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