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Federal Register / Vol. 86, No. 12 / Thursday, January 21, 2021 / Proposed Rules 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.
List of Subjects in 14 CFR Part 39
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:

Rolls-Royce Deutschland Ltd & Co KG Type Certificate previously held by RollsRoyce Deutschland GmbH, formerly BMW Rolls-Royce GmbH: Docket No.
FAA20201174; Project Identifier MCAI201900135E.
a Comments Due Date The FAA must receive comments on this airworthiness directive AD by March 8, 2021.
b Affected ADs None.
c Applicability This AD applies to Rolls-Royce Deutschland Ltd & Co KG RRD Type Certificate previously held by Rolls-Royce Deutschland GmbH, formerly BMW RollsRoyce GmbH BR700710A110, BR700
710A220 and BR700710C411 model turbofan engines with a high-pressure turbine HPT stage 1 disk having a part number and serial number listed in Planning Information, paragraph 1.A., of RRD Alert NonModification Service Bulletin NMSB SB
BR70072A900659, Revision 1, dated November 5, 2019, installed.

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d Subject Joint Aircraft System Component JASC
Code 7230, Turbine Engine Compressor Section.
e Unsafe Condition This AD was prompted by an investigation by RRD, which revealed a quality escape during the HPT stage 1 disk rim cooling air hole manufacturing process. The FAA is issuing this AD to prevent failure of the HPT
stage 1 disk. The unsafe condition, if not addressed, could result in the release of highenergy debris, damage to the airplane, and reduced control of the airplane.

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f Compliance Comply with this AD within the compliance times specified, unless already done.
g Required Actions Before the affected HPT stage 1 disk exceeds 2,840 flight cycles FCs since new, or within 60 days after the effective date of this AD, whichever occurs later, but not to exceed 8 years after the effective date of this AD if using FCs, remove the affected HPT
stage 1 disk from service and replace with a part eligible for installation. Guidance on replacing the HPT stage 1 disk can be found in the Accomplishment Instructions, paragraph 3.B., of RRD Non-Modification Service Bulletin NMSB SBBR70072
A900659, Revision 1, dated November 5, 2019.
h Installation Prohibition After the effective date of this AD, do not install any affected HPT stage 1 disk onto any engine.
i Definition 1 For the purpose of this AD, a part eligible for installation is an HPT stage 1
disk that is not listed in paragraph 1.A. of RRD NMSB SBBR70072A900659, Revision 1, dated November 5, 2019.
j Alternative Methods of Compliance AMOCs 1 The Manager, ECO Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14
CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the certification office, send it to the attention of the person identified in Related Information. You may email your request to: ANE-AD-AMOC@
faa.gov.
2 Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/
certificate holding district office.
k Related Information 1 For more information about this AD, contact Wego Wang, Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781
2387134; fax: 781 2387199; email:
wego.wang@faa.gov.
2 Refer to European Union Aviation Safety Agency EASA AD 20190299, dated December 10, 2019, for more information.
You may examine the EASA AD in the AD
docket at https www.regulations.gov by searching for and locating it in Docket No.
FAA20201174.
3 For service information identified in this AD, contact Rolls-Royce Deutschland Ltd & Co KG, Eschenweg 11, Dahlewitz, 15827, Germany; phone: +49 0 33 7086 1200; email:
rrd.techhelp@rolls-royce.com. You may view this referenced service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 1200 District Avenue, Burlington, MA 01803. For
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information on the availability of this material at the FAA, call 781 2387759.
Issued on January 8, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202100672 Filed 11921; 8:45 am BILLING CODE 491013P

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20201140; Project Identifier AD202001009T
RIN 2120AA64

Airworthiness Directives; The Boeing Company Airplanes Federal Aviation Administration FAA, DOT.
ACTION: Notice of proposed rulemaking NPRM.
AGENCY:

The FAA proposes to supersede Airworthiness Directive AD
20171413, which applies to certain The Boeing Company Model 737600, 700, 700C, 800, 900, and 900ER
series airplanes. AD 20171413
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. Since the FAA issued AD
20171413, operators have continued to find loose rudder pedal cover fasteners on previously inspected airplanes and airplanes outside the applicability of AD 20171413. This proposed AD would require modifying the rudder pedal cover and shroud, and apply to all The Boeing Company Model 737600, 700, 700C, 800, 900, and 900ER series airplanes and Model 737
8 and 7379 airplanes. 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 March 8, 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
SUMMARY:

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