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Federal Register / Vol. 86, No. 50 / Wednesday, March 17, 2021 / Proposed Rules
numbers 330001 through 330018, certificated in any category.
d Subject Joint Aircraft System Component Code 2400, Electrical Power System.
e Unsafe Condition This AD was prompted by reports of short circuit and arcing of the alternator main power cable in the engine compartment. The FAA is issuing this AD to prevent arcing of the alternator main power cable in the engine compartment. This condition, if not addressed, could result in an inflight fire and loss of engine thrust control, which may lead to reduced control of the airplane.
f Compliance Comply with this AD before further flight after the effective date of this AD, unless already done.
g Required Actions 1 Inspect the alternator main power cable and the exhaust crossover tube for burn marks, chafing, holes, and cracks, and replace any cable and crossover tube that has a burn mark, chafing, a hole, or a crack.
2 Install an additional alternator cable clamp part number MS21919WCJ6 and ensure correct routing of the alternator main power cable by following steps 1.5. through 1.9. of the Instructions in Mooney International Corporation Service Bulletin M20340C, dated February 14, 2020.
h Special Flight Permit A special flight permit may be issued with the following limitations:
1 Flights must not carry passengers;
2 Operation in daytime visual meteorological conditions only;
3 Straight and level flight must be maintained;
4 Operation in areas of known turbulence prohibited; and 5 Altitude limited to 9,000 ft. above sea level.

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i Alternative Methods of Compliance AMOCs 1 The Manager, Fort Worth 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 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.
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.
j Related Information 1 For more information about this AD, contact Jacob Fitch, Aviation Safety Engineer, Fort Worth ACO Branch, FAA, 10101
Hillwood Pkwy, Fort Worth, TX 76177;
phone: 817 2224130; fax: 817 2225245;
email: jacob.fitch@faa.gov.
2 For service information identified in this AD, contact Mooney International
VerDate Sep<11>2014

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Corporation, 165 Al Mooney Road, North Kerrville, TX 78028; phone: 800 4563033;
email: support@mooney.com. You may view this referenced service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 901 Locust, Kansas City, MO 64106. For information on the availability of this material at the FAA, call 816 3294148.
Issued on March 11, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202105441 Filed 31621; 8:45 am BILLING CODE 491013P

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 71
Docket No. FAA20210160; Airspace Docket No. 21ACE7
RIN 2120AA66

Proposed Amendment of Class E
Airspace; Sac City, IA
Federal Aviation Administration FAA, DOT.
ACTION: Notice of proposed rulemaking NPRM.
AGENCY:

This action proposes to amend the Class E airspace extending upward from 700 feet above the surface at Sac City Municipal Airport, Sac City, IA. The FAA is proposing this action as the result of an airspace review due to the decommissioning of the Sac City non-directional beacon NDB.
DATES: Comments must be received on or before May 3, 2021.
ADDRESSES: Send comments on this proposal to the U.S. Department of Transportation, Docket Operations, West Building Ground Floor, Room W12140, 1200 New Jersey Avenue SE, Washington, DC 20590; telephone 202
3669826, or 800 6475527. You must identify FAA Docket No. FAA2021
0160/Airspace Docket No. 21ACE7, at the beginning of your comments. You may also submit comments through the internet at https www.regulations.gov.
You may review the public docket containing the proposal, any comments received, and any final disposition in person in the Dockets Office between 9:00 a.m. and 5:00 p.m., Monday through Friday, except federal holidays.
FAA Order 7400.11E, Airspace Designations and Reporting Points, and subsequent amendments can be viewed online at https www.faa.gov/air_
traffic/publications/. For further information, you can contact the Airspace Policy Group, Federal Aviation SUMMARY:

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Administration, 800 Independence Avenue SW, Washington, DC 20591;
telephone: 202 2678783. The Order is also available for inspection at the National Archives and Records Administration NARA. For information on the availability of FAA
Order 7400.11E at NARA, email fedreg.legal@nara.gov or go to https
www.archives.gov/federal-register/cfr/
ibr-locations.html.
FOR FURTHER INFORMATION CONTACT:
Rebecca Shelby, Federal Aviation Administration, Operations Support Group, Central Service Center, 10101
Hillwood Parkway, Fort Worth, TX
76177; telephone 817 2225857.
SUPPLEMENTARY INFORMATION:
Authority for This Rulemaking The FAAs authority to issue rules regarding aviation safety is found in Title 49 of the United States Code.
Subtitle I, Section 106 describes the authority of the FAA Administrator.
Subtitle VII, Aviation Programs, describes in more detail the scope of the agencys authority. This rulemaking is promulgated under the authority described in Subtitle VII, Part A, Subpart I, Section 40103. Under that section, the FAA is charged with prescribing regulations to assign the use of airspace necessary to ensure the safety of aircraft and the efficient use of airspace. This regulation is within the scope of that authority as it would amend the Class E airspace extending upward from 700 feet above the surface at Sac City Municipal Airport, Sac City, IA, to support instrument flight rule operations at this airport.
Comments Invited Interested parties are invited to participate in this proposed rulemaking by submitting such written data, views, or arguments, as they may desire.
Comments that provide the factual basis supporting the views and suggestions presented are particularly helpful in developing reasoned regulatory decisions on the proposal. Comments are specifically invited on the overall regulatory, aeronautical, economic, environmental, and energy-related aspects of the proposal.
Communications should identify both docket numbers and be submitted in triplicate to the address listed above.
Commenters wishing the FAA to acknowledge receipt of their comments on this notice must submit with those comments a self-addressed, stamped postcard on which the following statement is made: Comments to Docket No. FAA20210160/Airspace Docket No. 21ACE7. The postcard
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