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Federal Register / Vol. 86, No. 32 / Friday, February 19, 2021 / Rules and Regulations replacements must be done in accordance with the operators maintenance or inspection program, as applicable. Repeat the inspections thereafter at intervals not to exceed 120 days.

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:

20210219 The Boeing Company:
Amendment 3921402 ; Docket No.
FAA20201176; Project Identifier AD
202001231T.
a Effective Date This airworthiness directive AD is effective March 8, 2021.
b Affected ADs None.
c Applicability This AD applies to The Boeing Company airplanes identified in paragraphs c1
through 3 of this AD, certificated in any category.
1 Model 7878 airplanes equipped with bilge assemblies with decompression panels having part number p/n C412707107, C412705117, C412705119, or C412705
121.
2 Model 7879 airplanes equipped with bilge assemblies with decompression panels having p/n C419701123, C419701125, C419701127, or C419701129.
3 Model 78710 airplanes equipped with bilge assemblies with decompression panels having p/n 852Z0151100, 852Z0153101, or 852Z0156103.
d Subject Air Transport Association ATA of America Code 26, Fire protection.
e Unsafe Condition This AD was prompted by reports of multiple incidents of torn decompression panels being found in the bilge area. The FAA is issuing this AD to address the possibility of leakage in the bilge area, which could, in the event of a cargo fire, result in insufficient Halon concentrations to adequately control the fire. This condition, if not addressed, could result in the loss of continued safe flight and landing of the airplane.

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f Compliance Comply with this AD within the compliance times specified, unless already done.
g Requirements Within 30 days after the effective date of this AD, do a general visual inspection of the bilge barriers located in the forward and aft cargo compartments for disengaged or damaged torn decompression panels. If any disengaged but undamaged panel is found:
Before further flight, reinstall the panel. If any damaged panel is found: Before further flight, replace the panel with a new or serviceable panel. Reinstallations and
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h Alternative Methods of Compliance AMOCs 1 The Manager, Seattle 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 the attention of the person identified in paragraph i of this AD. Information may be emailed to: 9-ANMSeattle-ACO-AMOC-Requests@faa.gov.
2 Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards Office.
3 An AMOC that provides an acceptable level of safety may be used for any repair, modification, or alteration required by this AD if it is approved by The Boeing Company Organization Designation Authorization ODA that has been authorized by the Manager, Seattle ACO Branch, FAA, to make those findings. To be approved, the repair method, modification deviation, or alteration deviation must meet the certification basis of the airplane, and the approval must specifically refer to this AD.
i Related Information For more information about this AD, contact Brandon Lucero, Aerospace Engineer, Cabin Safety and Environmental Systems Section, FAA, Seattle ACO Branch, 2200
South 216th St., Des Moines, WA 98198;
phone and fax: 2062313569; email:
brandon.lucero@faa.gov.
j Material Incorporated by Reference None.
Issued on January 19, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202103462 Filed 21721; 11:15 am BILLING CODE 491013P

DEPARTMENT OF HOMELAND
SECURITY
Coast Guard 33 CFR Part 100
Docket No. USCG20210040

Special Local Regulations; Mark Hahn Memorial 300 PWC Endurance Race, Lake Havasu City, AZ
Coast Guard, DHS.
Notice of enforcement of regulation.

AGENCY:
ACTION:

The Coast Guard will enforce the Mark Hahn Memorial 300 PWC

SUMMARY:

PO 00000

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Endurance Race special local regulations on the waters of Lake Havasu, Arizona from February 27
through February 28, 2021. These special local regulations are necessary to provide for the safety of the participants, crew, spectators, sponsor vessels, and general users of the waterway. During the enforcement period, persons and vessels are prohibited from anchoring, blocking, loitering, or impeding within this regulated area unless authorized by the Captain of the Port, or his designated representative.
DATES: The regulations in 33 CFR
100.1102 will be enforced from 7 a.m.
until 6 p.m., each day from February 27, 2021 through February 28, 2021 for Item 14 in Table 1 of Section 100.1102.
FOR FURTHER INFORMATION CONTACT: If you have questions about this notice of enforcement, call or email Lieutenant John Santorum, Waterways Management, U.S. Coast Guard Sector San Diego, CA; telephone 619278
7656, email MarineEventsSD@uscg.mil.
SUPPLEMENTARY INFORMATION: The Coast Guard will enforce the special local regulations in 33 CFR 100.1102 for the Mark Hahn Memorial 300 PWC
Endurance Race on Lake Havasu, AZ in 33 CFR 100.1102, Table 1, Item 14 of that section from 7 a.m. to 6 p.m. daily, on February 27, 2021 and February 28, 2021. This enforcement action is being taken to provide for the safety of life on navigable waterways during the event.
The Coast Guards regulation for annual marine events on the Colorado River, between Davis Dam Bullhead City, Arizona and Headgate Dam Parker, Arizona identifies the regulated entities and area for this event. Under the provisions of 33 CFR 100.1102, persons and vessels are prohibited from anchoring, blocking, loitering, or impeding within this regulated area, unless authorized by the Captain of the Port, or his designated representative.
The Coast Guard may be assisted by other Federal, State, or local law enforcement agencies in enforcing this regulation.
In addition to this document in the Federal Register, the Coast Guard will provide the maritime community with advance notification of this enforcement period via the Local Notice to Mariners and local advertising by the event sponsor.
If the Captain of the Port Sector San Diego or his designated representative determines that the regulated area need not be enforced for the full duration stated on this document, he or she may use a Broadcast Notice to Mariners or other communications coordinated with
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