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Federal Register / Vol. 86, No. 128 / Thursday, July 8, 2021 / Rules and Regulations
Modification Service Bulletin NMSB SB
BR70072A900659, Revision 1, dated November 5, 2019, installed.
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.
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 Rolls-Royce Alert NonModification Service Bulletin NMSB SB
BR70072A900659, 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.

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i Definition 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 Rolls-Royce Alert 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
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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 on at https www.regulations.gov by searching for and locating Docket No. FAA
20201174.
l Material Incorporated by Reference 1 The Director of the Federal Register approved the incorporation by reference IBR of the service information listed in this paragraph under 5 U.S.C. 552a and 1 CFR
part 51.
2 You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise.
i Rolls-Royce Alert Non-Modification Service Bulletin SBBR70072A900659, Revision 1, dated November 5, 2019.
ii Reserved 3 For service information identified in this AD, contact Rolls-Royce Deutschland Ltd & Co KG, Eschenweg 11, Dahlewitz 15827, Germany; phone: +49 33 7086 4040; email:
rrd.techhelp@rolls-royce.com.
4 You may view this service information at 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.
5 You may view this service information that is incorporated by reference at the National Archives and Records Administration NARA. For information on the availability of this material at NARA, email: fedreg.legal@nara.gov, or go to:
https www.archives.gov/federal-register/cfr/
ibr-locations.html.
Issued on June 14, 2021.
Gaetano A. Sciortino, Deputy Director for Strategic Initiatives, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202114481 Filed 7721; 8:45 am BILLING CODE 491013P

DEPARTMENT OF HOMELAND
SECURITY
Coast Guard 33 CFR Part 165
Docket No. USCG20210296

Safety Zones; Recurring Safety Zones in Captain of the Port Sault Sainte Marie Coast Guard, Department of Homeland Security DHS.
ACTION: Notice of enforcement of regulation.
AGENCY:

The Coast Guard will enforce certain safety zones located in the Federal regulations for Annual Events in the Captain of the Port Sault Sainte
SUMMARY:

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Marie. This action is necessary and intended to protect the safety of life and property on navigable waters prior to, during, and immediately after these events. During each enforcement period, no person or vessel may enter the respective safety zone without the permission of the Captain of the Port Sault Sainte Marie or a designated representative.
DATES: The regulations in 33 CFR
165.918 as listed in Table 165.918 will be enforced for the events and times as stated in the SUPPLEMENTARY
INFORMATION below.
FOR FURTHER INFORMATION CONTACT: If you have questions about this publication, call or email LT Deaven Palenzuela, Waterways Management division, Coast Guard Sector Sault Sainte Marie, U.S. Coast Guard;
telephone 9066353223, email ssmprevention@uscg.mil.
SUPPLEMENTARY INFORMATION: The Coast Guard will enforce the Safety Zones;
Annual Events in the Captain of the Port Buffalo Zone listed in 33 CFR 165.918
for the following events:
i. Elk Rapids Harbor Days Fireworks;
Elk Rapids, MI: The safety zone listed in Table 165.91820 will be enforced on August 7, 2021, from 10 p.m. through 10:30 p.m. on all U.S. navigable waters within the arc of a circle with an approximate 750-foot radius from the fireworks launch site located on a barge in position 44546.95 N, 85253.11
W.
ii. Nautical City Fireworks, Rogers City: The safety zone listed in Table 165.91821 will be enforced on August 8, 2021, from 10 p.m. through 10:30
p.m. on all U.S. navigable waters within the arc of a circle with an approximate 750-foot radius from the fireworks launch site located near Harbor View Road in position 452504.72 N, 834751.21 W.
This action is being taken to provide for the safety of life on navigable waterways during the fireworks displays. The regulations for safety zones within the Captain of the Port Sault Sainte Marie Zone, 165.918, apply for these fireworks displays.
Pursuant to 33 CFR 165.23, entry into, transiting, or anchoring within these safety zones during an enforcement period is prohibited unless authorized by the Captain of the Port Buffalo or their designated representative;
designation need not be in writing.
Those seeking permission to enter these safety zones may request permission from the Captain of the Port Buffalo via channel 16, VHFFM. Vessels and persons granted permission to enter the safety zone shall obey the directions of
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