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Federal Register / Vol. 86, No. 218 / Tuesday, November 16, 2021 / Proposed Rules
4 This AD does not mandate compliance with the Remarks section of EASA AD
20210114.
i No Reporting Requirement Although the service information referenced in EASA AD 20210114 specifies to submit certain information to the manufacturer, this AD does not include that requirement.

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 ECO Branch, send it to the attention of the person identified in paragraph k2 of this AD. Information may be emailed 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.

lotter on DSK11XQN23PROD with PROPOSALS1

k Related Information 1 For more information about EASA AD
20210114, contact EASA, KonradAdenauer-Ufer 3, 50668 Cologne, Germany;
phone: +49 221 8999 000; email: ADs@
easa.europa.eu. You may find this material on the EASA website at https ad.easa.
europa.eu. 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 2387759.
This material may be found in the AD docket at https www.regulations.gov by searching for and locating Docket No. FAA20211004.
2 For more information about this AD, contact Nicholas Paine, Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781
2387116; email: nicholas.j.paine@faa.gov.
3 For RRD service information identified in this AD, 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 2387759.

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14 CFR Part 39

Examining the AD Docket
Docket No. FAA20211002; Project Identifier AD202100332R
RIN 2120AA64

Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters
j Alternative Methods of Compliance AMOCs
Issued on November 9, 2021.
Ross Landes, Deputy Director for Regulatory Operations, Compliance & Airworthiness Division, Aircraft Certification Service.

Federal Aviation Administration
76177. For information on the availability of this material at the FAA, call 817 2225110.

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration FAA, DOT.
ACTION: Notice of proposed rulemaking NPRM.
AGENCY:

The FAA proposes to adopt a new airworthiness directive AD for certain Sikorsky Aircraft Corporation Model S76D helicopters. This proposed AD was prompted by reports that certain Thales global positioning system GPS satellite based augmentation system SBAS receivers provided, under certain conditions, erroneous outputs on aircraft positions.
This proposed AD would require replacing affected GPS receivers and prohibit installing those GPS receivers.
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 January 3, 2022.
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 service information identified in this NPRM, contact your local Sikorsky Field Representative or Sikorskys Service Engineering Group at Sikorsky Aircraft Corporation, Mailstop K100, 124 Quarry Road, Trumbull, CT 06611;
telephone 18009464337 1800
WingedS; email wcs_cust_service_
eng.gr-sik@lmco.com. Operators may also log on to the Sikorsky 360 website at https www.sikorsky360.com. You may view this service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N321, Fort Worth, TX
SUMMARY:

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You may examine the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20211002; 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:
Nicholas Rediess, Aviation Safety Engineer, Boston ACO Branch, FAA, 1200 District Avenue, Burlington, MA
01803; phone: 781 2387159; fax: 781
2387199; email: nicholas.rediess@
faa.gov.
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.
FAA20211002; Project Identifier AD
202100332R 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 this 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 contact received about this NPRM.
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

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