Airworthiness Directives; The Boeing Company Airplanes, 10171-10173 [2021-03462]

Download as PDF 10171 Rules and Regulations Federal Register Vol. 86, No. 32 Friday, February 19, 2021 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. Federal Aviation Administration (FAA), DOT. ACTION: Final rule; request for comments. 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: 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. 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 The Code of Federal Regulations is sold by the Superintendent of Documents. 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: SUMMARY: tkelley on DSKBCP9HB2PROD with RULES • Hand Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. VerDate Sep<11>2014 16:57 Feb 18, 2021 Jkt 253001 PO 00000 Frm 00001 Fmt 4700 Sfmt 4700 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 E:\FR\FM\19FER1.SGM 19FER1 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 Repetitive inspections ... 3 work-hours × $85 per hour = $255 per inspection cycle. The FAA estimates the following costs to do any necessary replacements that would be required based on the Cost per product Parts cost $0 $255 per inspection cycle. results of the inspections. The FAA has no way of determining the number of Cost on U.S. operators $56,610 per inspection cycle. aircraft that might need these replacements: ON-CONDITION COSTS Action Labor cost Replacement .................................... 1 work-hour × $85 per hour = $85 ............................................................ Cost per product Parts cost *$ * $85 * The FAA has received no definitive data on which to base the parts cost estimates for the replacements specified in this AD. tkelley on DSKBCP9HB2PROD with RULES 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. VerDate Sep<11>2014 16:57 Feb 18, 2021 Jkt 253001 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. (1) Is not a ‘‘significant regulatory action’’ under Executive Order 12866, and (2) Will not affect intrastate aviation in Alaska. Regulatory Findings List of Subjects in 14 CFR Part 39 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: Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. PO 00000 Frm 00002 Fmt 4700 Sfmt 4700 Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: E:\FR\FM\19FER1.SGM 19FER1 Federal Register / Vol. 86, No. 32 / Friday, February 19, 2021 / Rules and Regulations 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. 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. tkelley on DSKBCP9HB2PROD with RULES (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 VerDate Sep<11>2014 16:57 Feb 18, 2021 Jkt 253001 (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 Coast Guard, DHS. Notice of enforcement of regulation. AGENCY: ACTION: The Coast Guard will enforce the Mark Hahn Memorial 300 PWC SUMMARY: PO 00000 Frm 00003 Fmt 4700 Sfmt 4700 10173 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 E:\FR\FM\19FER1.SGM 19FER1

Agencies

[Federal Register Volume 86, Number 32 (Friday, February 19, 2021)]
[Rules and Regulations]
[Pages 10171-10173]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-03462]



========================================================================
Rules and Regulations
                                                Federal Register
________________________________________________________________________

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. 

========================================================================


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

[[Page 10171]]



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: [email protected].

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 on-condition 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

[[Page 10172]]

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: [email protected]. 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
----------------------------------------------------------------------------------------------------------------
                                                                                                 Cost on U.S.
             Action                     Labor cost          Parts cost     Cost per  product       operators
----------------------------------------------------------------------------------------------------------------
Repetitive inspections.........  3 work-hours x $85 per               $0  $255 per            $56,610 per
                                  hour = $255 per                          inspection cycle.   inspection cycle.
                                  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
----------------------------------------------------------------------------------------------------------------
                                                                                                     Cost per
                   Action                                 Labor cost                Parts cost        product
----------------------------------------------------------------------------------------------------------------
Replacement................................  1 work-hour x $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:

[[Page 10173]]

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

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


Sec.  39.13   [Amended]

0
2. The FAA amends Sec.  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: [email protected].
    (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: [email protected].

(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

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