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Federal Register / Vol. 86, No. 12 / Thursday, January 21, 2021 / Proposed Rules
p.m., Monday through Friday, except Federal holidays.
For service information identified in this NPRM, contact Boeing Commercial Airplanes, Attention: Contractual & Data Services C&DS, 2600 Westminster Blvd., MC 110SK57, Seal Beach, CA
907405600; telephone 5627971717;
internet https
www.myboeingfleet.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.
It is also available on the internet at https www.regulations.gov by searching for and locating Docket No.
FAA20201140.
Examining the AD Docket You may examine the AD docket on the internet at https
www.regulations.gov by searching for and locating Docket No. FAA2020
1140; 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.
FOR FURTHER INFORMATION CONTACT:
Douglas Tsuji, Aerospace Engineer, Systems and Equipment Section, FAA, Seattle ACO Branch, 2200 South 216th St., Des Moines, WA 98198; phone and fax: 2062313548; email:
douglas.tsuji@faa.gov.
SUPPLEMENTARY INFORMATION:

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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 the ADDRESSES section. Include Docket No. FAA20201140; Project Identifier AD202001009T 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 the FAA receives about this proposed AD.

900ER series airplanes and Model 737
8 and 7379 airplanes.

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 the person identified in the FOR FURTHER INFORMATION
CONTACT section. Any commentary that the FAA receives which is not specifically designated as CBI will be placed in the public docket for this rulemaking.

Related Service Information Under 1
CFR Part 51
The FAA reviewed Boeing Alert Requirements Bulletin 73727A1313
RB, Revision 1, dated June 24, 2020; and Boeing Alert Requirements Bulletin 73727A1314 RB, Revision 1, dated June 24, 2020. The service information describes procedures for modifying the captains and first officers rudder pedal cover and shroud assemblies. These documents are distinct since they apply to different airplane models. 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.

Background The FAA issued AD 20171413, Amendment 3918957 82 FR 33007, July 19, 2017 AD 20171413, for certain The Boeing Company Model 737600, 700, 700C, 800, 900, and 900ER series airplanes. AD 201714
13 requires a torque check of the screws in the cover assembly of the heel rest for both the captains and the first officers rudder pedals, and corrective action if necessary. AD 20171413 resulted from a report of an aborted takeoff because the rudder pedals were not operating correctly. Investigation revealed a protruding screw in the rudder pedal heel rest adjacent to the pedals. The FAA issued AD 20171413
to address a protruding screw in the cover assembly of the heel rest of a rudder pedal. A protruding screw could restrict rudder pedal motion and reduce differential braking control during takeoff or landing, which could cause a high-speed runway excursion.
Actions Since AD 20171413 Was Issued Since the FAA issued AD 201714
13, operators have continued to find loose rudder pedal cover fasteners on previously inspected airplanes and on airplanes outside the applicability of the AD. The FAA has determined that this design issue is an unsafe condition that affects all The Boeing Company Model 737600, 700, 700C, 800, 900, and
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FAAs Determination The FAA is issuing this NPRM after determining the unsafe condition described previously is likely to exist or develop in other products of the same type design.
Proposed AD Requirements This proposed AD would retain none of the requirements of AD 20171413.
This proposed AD would expand the applicability to include all The Boeing Company Model 600, 700, 700C, 800, 900, and 900ER series airplanes and Model 7378 and 7379 airplanes.
This proposed AD would require accomplishment of the actions identified in Boeing Alert Requirements Bulletin 73727A1313 RB, Revision 1, dated June 24, 2020; and Boeing Alert Requirements Bulletin 73727A1314
RB, Revision 1, dated June 24, 2020;
described previously, except as discussed under Differences Between this Proposed AD and the Service Information, and except for any differences identified as exceptions in the regulatory text of this proposed AD.
For information on the procedures and compliance times, see this service information at https
www.regulations.gov by searching for and locating Docket No. FAA2020
1140.
Differences Between This Proposed AD
and the Service Information The effectivity of Boeing Alert Requirements Bulletin 73727A1313
RB, Revision 1, dated June 24, 2020, is limited to Model 7378 and 7379
airplanes with certain line numbers.
The effectivity of Boeing Alert Requirements Bulletin 73727A1314
RB, Revision 1, dated June 24, 2020, is limited to Model 737600, 737700, 737700C, 737800, 737900, and 737

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