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Federal Register / Vol. 86, No. 153 / Thursday, August 12, 2021 / Proposed Rules
a Comments Due Date The FAA must receive comments on this airworthiness directive AD by September 27, 2021.
b Affected ADs None.
c Applicability This AD applies to Bombardier, Inc., Model BD1001A10, certificated in any category, serial numbers 20003 through 20780 inclusive.
d Subject Air Transport Association ATA of America Code 32, Landing gear.
e Unsafe Condition This AD was prompted by a discovery that a lockwire may not have been installed on the side stay actuator pin nut of the main landing gear MLG. The FAA is issuing this AD to address a possible missing lockwire, which could result in loss of the nut, and if undetected, lead to the collapse of the affected MLG.
f Compliance Comply with this AD within the compliance times specified, unless already done.

lotter on DSK11XQN23PROD with PROPOSALS1

g Required Actions Within 12 months after the effective date of this AD: Inspect the left-hand LH and right-hand RH MLG side stay actuator assembly pin nuts for presence of a lockwire, in accordance with paragraph 2.B of the Accomplishment Instructions of the applicable service information specified in paragraphs g1 and 2 of this AD. If the lockwire is missing: Before further flight, install a lockwire in accordance with paragraph 2.C of the Accomplishment Instructions of the applicable service information specified in paragraphs g1
and 2 of this AD.
1 Bombardier Service Bulletin 10032
36, dated June 25, 2020.
2 Bombardier Service Bulletin 35032
012, dated June 25, 2020.
h Other FAA AD Provisions The following provisions also apply to this AD:
1 Alternative Methods of Compliance AMOCs: The Manager, New York ACO
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 responsible Flight Standards Office, as appropriate. If sending information directly to the manager of the certification office, send it to ATTN: Program Manager, Continuing Operational Safety, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 5162287300; fax 5167945531. Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards Office.
2 Contacting the Manufacturer: For any requirement in this AD to obtain instructions
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from a manufacturer, the instructions must be accomplished 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 DAO-authorized signature.
i Related Information 1 Refer to Mandatory Continuing Airworthiness Information MCAI, TCCA
AD CF202052, dated November 30, 2020, for related information. This MCAI may be found in the AD docket on the internet at https www.regulations.gov by searching for and locating Docket No. FAA20210658.
2 For more information about this AD, contact Elizabeth Dowling, Aerospace Engineer, Mechanical Systems and Administrative Services Section, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 5162287300; fax 5167945531; email 9-avs-nyaco-cos@faa.gov.
3 For service information identified in this AD, contact Bombardier, Inc., 200 CoteVertu Road West, Dorval, Quebec H4S 2A3, Canada; North America toll-free telephone 1
8665381247 or direct-dial telephone 1
5148552999; email ac.yul@
aero.bombardier.com; internet https
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.
Issued on August 4, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202116938 Filed 81121; 8:45 am BILLING CODE 491013P

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20210655; Project Identifier MCAI202001497E
RIN 2120AA64

Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Type Certificate Previously Held by RollsRoyce plc Turbofan Engines Federal Aviation Administration FAA, DOT.
ACTION: Notice of proposed rulemaking NPRM.
AGENCY:

The FAA proposes to adopt a new airworthiness directive AD for all Rolls-Royce Deutschland Ltd. & Co KG
RRD Trent 700072 and Trent 7000
72C model turbofan engines. This proposed AD was prompted by the
SUMMARY:

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manufacturer revising the engine Time Limits Manual TLM life limits of certain critical rotating parts and updating certain maintenance tasks. The proposed AD would require the operator to revise the airworthiness limitation section ALS of their approved maintenance program AMP by incorporating the revised tasks of the applicable TLM for each affected model turbofan engine, as specified in a European Union Aviation Safety Agency EASA AD, which is proposed for incorporation by reference IBR. 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 September 27, 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: 202 4932251.
Mail: U.S. Department of Transportation, Docket Operations, M
30, 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 material that is proposed for IBR
in this AD, contact EASA, KonradAdenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999 000;
email: ADs@easa.europa.eu; website:
https www.easa.europa.eu. You may find this material on the EASA website at https ad.easa.europa.eu. For RRD
service information identified in this NPRM, contact Rolls-Royce plc, Corporate Communications, P.O. Box 31, Derby, DE24 8BJ, United Kingdom;
phone: +44 01332 242424 fax: +44
01332 249936; website: https
www.rolls-royce.com/contact-us.aspx.
You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call 781 238
7759. The EASA material is also available at https www.regulations.gov by searching for and locating Docket No.
FAA20210655.
Examining the AD Docket You may examine the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20210655; or in person at Docket Operations between 9 a.m. and 5 p.m.,
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