This section of the FEDERAL REGISTER

contains regulatory documents having general

applicability and legal effect, most of which

are keyed to and codified in the Code of

Federal Regulations, which is published under

50 titles pursuant to 44 U.S.C. 1510.

The Code of Federal Regulations is sold by

the Superintendent of Documents.

Rules and Regulations Federal Register

10171 

Vol. 86, No. 32 

Friday, February 19, 2021 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2020–1176; Project 

Identifier AD–2020–01231–T; Amendment 

39–21402; AD 2021–02–19] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule; request for 

comments. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for certain 

The Boeing Company Model 787–8, 

787–9, and 787–10 airplanes. This AD 

requires repetitive general visual 

inspections of the bilge barriers located 

in the forward and aft cargo 

compartments for disengaged or 

damaged decompression panels, 

reinstallation of disengaged but 

undamaged decompression panels, and 

replacement of damaged decompression 

panels. 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 unsafe condition on 

these products. 

DATES: This AD is effective March 8, 

2021. 

The FAA must receive comments on 

this AD by April 5, 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: 202–493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 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. 

Examining the AD Docket 

You may examine the AD docket on 

the internet at https:// 

www.regulations.gov by searching for 

and locating Docket No. FAA–2020– 

1176; 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 final rule, 

any comments received, and other 

information. The street address for 

Docket Operations is listed above. 

FOR FURTHER INFORMATION 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: 206– 

231–3569; email: brandon.lucero@

faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

The FAA has received reports of 

multiple incidents of torn 

decompression panels being found in 

the bilge area. These torn 

decompression panels were found after 

accomplishment of the actions required 

by AD 2018–05–06, Amendment 39– 

19215 (83 FR 9688, March 7, 2018) (AD 

2018–05–06), which requires repetitive 

inspections of the bilge barriers in the 

forward and aft cargo compartments for 

disengaged decompression panels; 

reinstalling any disengaged panels; and 

replacing the decompression panels 

with new panels and straps. The torn 

decompression panels present a 

different unsafe condition than that 

addressed by AD 2018–05–06, so the 

FAA is issuing this AD to address the 

new unsafe condition. In the event of a 

cargo fire, significant leakage in the 

bilge area could 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. 

In addition to this AD addressing a 

different unsafe condition than the one 

specified in AD 2018–05–06, this AD 

also includes models that are not 

affected by the unsafe condition 

specified in AD 2018–05–06. Both ADs 

include reinstallation and replacement 

actions as part of the required oncondition actions. AD 2018–05–06 

requires certain service information for 

the reinstallation and replacement 

instructions, which refer to airplane 

maintenance manual (AMM) 

procedures. However, this AD requires 

using the operator’s maintenance or 

inspection program, as applicable, for 

the reinstallation and replacement 

instructions. 

FAA’s Determination 

The FAA is issuing this AD because 

the agency evaluated all the relevant 

information and determined the unsafe 

condition described previously is likely 

to exist or develop in other products of 

the same type design. 

AD Requirements 

This AD requires repetitive 

inspections of the bilge barriers located 

in the forward and aft cargo 

compartments for disengaged or 

damaged (torn) decompression panels, 

reinstalling panels that are disengaged 

but undamaged, and replacing damaged 

panels. 

Interim Action 

The FAA considers this AD interim 

action. The manufacturer is currently 

developing a modification that will 

address the unsafe condition identified 

in this AD. Once this modification is 

developed, approved, and available, the 

FAA might consider additional 

rulemaking. 

FAA’s Justification and Determination 

of the Effective Date 

An unsafe condition exists that 

requires the immediate adoption of this 

AD without providing an opportunity 

for public comments prior to adoption. 

The FAA has found that the risk to the 

flying public justifies waiving notice 

and comment prior to adoption of this 

rule because, in the event of a cargo fire, 

significant leakage in the bilge area 

could 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. In addition, the 

compliance time for the required action 

is shorter than the time necessary for the 

public to comment and for publication 

of the final rule. Therefore, the FAA 

finds good cause that notice and 

opportunity for prior public comment 

are impracticable. In addition, for the 


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10172 Federal Register / Vol. 86, No. 32 / Friday, February 19, 2021 / Rules and Regulations 

reasons stated above, the FAA finds that 

good cause exists for making this 

amendment effective in less than 30 

days. 

Comments Invited 

The FAA invites you to send any 

written data, views, or arguments about 

this final rule. Send your comments to 

an address listed under ADDRESSES. 

Include the docket number FAA–2020– 

1176 and Project Identifier AD–2020– 

01231–T at the beginning of your 

comments. The most helpful comments 

reference a specific portion of the final 

rule, 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 final rule 

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 final rule. 

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 AD 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 AD, 

it is important that you clearly designate 

the submitted comments as CBI. Please 

mark each page of your submission 

containing CBI as ‘‘PROPIN.’’ The FAA 

will treat such marked submissions as 

confidential under the FOIA, and they 

will not be placed in the public docket 

of this AD. Submissions containing CBI 

should be sent to 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: 206–231–3569; email: 

brandon.lucero@faa.gov. Any 

commentary that the FAA receives that 

is not specifically designated as CBI will 

be placed in the public docket for this 

rulemaking. 

Regulatory Flexibility Act (RFA) 

The requirements of the RFA do not 

apply when an agency finds good cause 

pursuant to 5 U.S.C. 553 to adopt a rule 

without prior notice and comment. 

Because the FAA has determined that it 

has good cause to adopt this rule 

without notice and comment, RFA 

analysis is not required. 

Costs of Compliance 

The FAA estimates that this AD 

affects 222 airplanes of U.S. registry. 

The FAA estimates the following costs 

to comply with this AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Repetitive inspections ... 3 work-hours × $85 per hour = $255 per inspection cycle.$0 $255 per inspection 

cycle.

$56,610 per inspection 

cycle. 

The FAA estimates the following 

costs to do any necessary replacements 

that would be required based on the 

results of the inspections. The FAA has 

no way of determining the number of 

aircraft that might need these 

replacements: 

ON-CONDITION COSTS

Action Labor cost Parts cost Cost per 

product 

Replacement .................................... 1 work-hour × $85 per hour = $85 ............................................................ * $ * $85 

* The FAA has received no definitive data on which to base the parts cost estimates for the replacements specified in this AD. 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

section 106, describes the authority of 

the FAA Administrator. ‘‘Subtitle VII: 

Aviation Programs’’ describes in more 

detail the scope of the Agency’s 

authority. 

The FAA is issuing this rulemaking 

under the authority described in 

Subtitle VII, Part A, Subpart III, Section 

44701: General requirements. Under 

that section, Congress charges the FAA 

with promoting safe flight of civil 

aircraft in air commerce by prescribing 

regulations for practices, methods, and 

procedures the Administrator finds 

necessary for safety in air commerce. 

This regulation is within the scope of 

that authority because it addresses an 

unsafe condition that is likely to exist or 

develop on products identified in this 

rulemaking action. 

Regulatory Findings 

This AD will not have federalism 

implications under Executive Order 

13132. This AD will not have a 

substantial direct effect on the States, on 

the relationship between the national 

government and the States, or on the 

distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify that this AD: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

and 

(2) Will not affect intrastate aviation 

in Alaska. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

Adoption of the Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA amends 14 CFR part 39 as 

follows: 


tkelley on DSKBCP9HB2PROD with RULES
Federal Register / Vol. 86, No. 32 / Friday, February 19, 2021 / Rules and Regulations 10173 

PART 39—AIRWORTHINESS 

DIRECTIVES 

■ 1. The authority citation for part 39 

continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive: 

2021–02–19 The Boeing Company: 

Amendment 39–21402 ; Docket No. 

FAA–2020–1176; Project Identifier AD– 

2020–01231–T. 

(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 (c)(1) 

through (3) of this AD, certificated in any 

category. 

(1) Model 787–8 airplanes equipped with 

bilge assemblies with decompression panels 

having part number (p/n) C412707–107, 

C412705–117, C412705–119, or C412705– 

121. 

(2) Model 787–9 airplanes equipped with 

bilge assemblies with decompression panels 

having p/n C419701–123, C419701–125, 

C419701–127, or C419701–129. 

(3) Model 787–10 airplanes equipped with 

bilge assemblies with decompression panels 

having p/n 852Z0151–100, 852Z0153–101, or 

852Z0156–103. 

(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. 

(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 

replacements must be done in accordance 

with the operator’s maintenance or 

inspection program, as applicable. Repeat the 

inspections thereafter at intervals not to 

exceed 120 days. 

(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: 206–231–3569; 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. 2021–03462 Filed 2–17–21; 11:15 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF HOMELAND 

SECURITY 

Coast Guard 

33 CFR Part 100 

[Docket No. USCG–2021–0040] 

Special Local Regulations; Mark Hahn 

Memorial 300 PWC Endurance Race, 

Lake Havasu City, AZ 

AGENCY: Coast Guard, DHS. 

ACTION: Notice of enforcement of 

regulation. 

SUMMARY: The Coast Guard will enforce 

the Mark Hahn Memorial 300 PWC 

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 619–278– 

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 Guard’s 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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