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Published 2025-10-02 · Federal Register document 2025-19390

Airworthiness Directives; The Boeing Company Airplanes

Publication 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 was prompted by reports of corrosion on one or more of the eight lower fitting assemblies and adjacent lavatory components on certain lavatories. This AD requires a detailed inspection of the lower fitting assemblies and the centerline partition threshold of the lavatories for corrosion, recording on the modification record placard, and applicable on-condition actions. This AD also requires revising the existing maintenance program to incorporate a detailed inspection of the lavatory vertical side forward fittings for corrosion or damage. The FAA is issuing this AD to address the unsafe condition on these products.

Why this record is shown

Source: Federal Register annual FAA metadata. Acquired 2026-09-03T22:24:20.413248+00:00. The title, summary and date are source facts.

Source revision
federal_register_ad_metadata_2025-67d39c2af9a91434
Source row
results[253]
Raw source SHA-256
67d39c2af9a914349adee3ee1cee836da6415ed54d2b01123da75b563b687ab0

Final-rule publication

Recorded publication clauses

AD identifier printed in this edition
2025-20-03
Effective date printed in this edition
2025-11-06
Read 13 complete recorded clauses
Effective Date
(a) Effective Date

    This airworthiness directive (AD) is effective November 6, 2025.

Exact source excerpt. Text positions 20437–20527, end exclusive, in the original decoded publication. SHA-256: 24dfd3cd6705dc61246aea2d1d794c6a6ceeece5e7c264d73feb375908bdb660

Affected ADs
(b) Affected ADs

    None.

Exact source excerpt. Text positions 20527–20556, end exclusive, in the original decoded publication. SHA-256: 871a4afc60ceeae06e8010585055188633d616078500c45937092bfe892239c0

Applicability wording · Applicability
(c) Applicability

    This AD applies to The Boeing Company Model 787-8, 787-9, and 
787-10 airplanes, certificated in any category, as identified in 
Boeing Special Attention Requirements Bulletin B787-81205-SB250302-
00 RB, Issue 001, dated August 21, 2024, except for airplanes 
identified as Group 3, Configuration 1; and Group 4, Configuration 3 
airplanes.

Exact source excerpt. Text positions 20556–20921, end exclusive, in the original decoded publication. SHA-256: a0ecf95126b5e81cc9bc5c39b698d27224f83ab0fb06a05a928ac4348069bbae

Subject
(d) Subject

    Air Transport Association (ATA) of America Code 25, Equipment/
furnishings.

Exact source excerpt. Text positions 20921–21015, end exclusive, in the original decoded publication. SHA-256: cd842d64513c20d1d1bce522de9bad2824ec75abe7ad967bbaaaf7decc400437

Unsafe Condition
(e) Unsafe Condition

    This AD was prompted by reports of corrosion on one or more of 
the eight lower fitting assemblies and adjacent lavatory components 
on the Jamco family 95/96 lavatories. The FAA is issuing this AD to 
address corrosion that could cause the lavatories to break free from 
the lower mounts during an event with high g-forces. The unsafe 
condition, if not addressed, could result in potential serious 
injury to passengers and crew or a displaced lavatory blockage that 
prevents egress through the aisle and exits.

Exact source excerpt. Text positions 21015–21557, end exclusive, in the original decoded publication. SHA-256: cf7c9abfd61c3e305914ada3336d5a92eae5bb7aada0b77c920e49238cab2741

Compliance
(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

Exact source excerpt. Text positions 21557–21659, end exclusive, in the original decoded publication. SHA-256: 00fbfa31932483f627d0ce0a11cbd2e35e15d9231842b91ac85623ce533912d3

Required Actions
(g) Required Actions

    Except as specified by paragraph (h) of this AD: At the 
applicable times specified in the ``Compliance'' paragraph of Boeing 
Special Attention Requirements Bulletin B787-81205-SB250302-00 RB, 
Issue 001, dated August 21, 2024, do all applicable actions 
identified in, and in accordance with, the Accomplishment 
Instructions of Boeing Special Attention Requirements Bulletin B787-
81205-SB250302-00 RB, Issue 001, dated August 21, 2024.
    Note 1 to paragraph (g): Guidance for accomplishing the actions 
required by this AD can be found in Boeing Special Attention Service 
Bulletin B787-81205-SB250302-00, Issue 001, dated August 21, 2024, 
which is referred to in Boeing Special Attention Requirements 
Bulletin B787-81205-SB250302-00 RB, Issue 001, dated August 21, 
2024.

Exact source excerpt. Text positions 21659–22467, end exclusive, in the original decoded publication. SHA-256: 633375910e611ed658ffcfa70316c18dec73e86898641ca2cb1f9b768b41b65c

Exceptions to Requirements Bulletin Specifications
(h) Exceptions to Requirements Bulletin Specifications

    (1) Where the ``Effectivity'' paragraph and the Boeing 
Recommended Compliance Time columns of the tables in the 
``Compliance'' paragraph of Boeing Special Attention Requirements 
Bulletin B787-81205-SB250302-00 RB, Issue 001, dated August 21, 
2024, refer to the Issue 001 date of Requirements Bulletin B787-
81205-SB250302-00 RB, this AD requires using the effective date of 
this AD.
    (2) Where the Boeing Recommended Compliance Time columns of the 
tables in the ``Compliance'' paragraph of Boeing Special Attention 
Requirements Bulletin B787-81205-SB250302-00 RB, Issue 001, dated 
August 21, 2024, for Condition 1, Action 1 and Action 2; and 
Condition 2, Action 2 and Action 3, specify modifying the record 
placard and incorporating Maintenance Review Board Report (MRBR) 
Item Number 25-185-00 ``Before further flight'', this AD requires 
replacing that text with ``Within 90 days''.
    (3) Where Boeing Special Attention Requirements Bulletin B787-
81205-SB250302-00 RB, Issue 001, dated August 21, 2024, specifies 
contacting Boeing for repair instructions, this AD requires doing 
the repair using a method approved in accordance with the procedures 
specified in paragraph (k) of this AD.
    (4) Where the Method of Compliance columns in the 
``Accomplishment Instructions'' paragraph of Boeing Special 
Attention Requirements Bulletin B787-81205-SB250302-00 RB, Issue 
001, dated August 21, 2024, specifies doing a detailed inspection 
using ``Paragraph 3.A. step (3)'', this AD requires replacing that 
text with ``Paragraph 3.A. step (3) and step (4), as applicable''.

Exact source excerpt. Text positions 22467–24120, end exclusive, in the original decoded publication. SHA-256: dbd9ddde2a31b4ca6a2a311e0fa90a7864079c7da65d8c91c7b1cca7fd191432

No Alternative Actions and Intervals
(i) No Alternative Actions and Intervals

    After the existing maintenance program has been revised as 
required by paragraph (g) of this AD, no alternative actions (e.g., 
inspections) or intervals may be used unless the actions or 
intervals are approved as an alternative method of compliance (AMOC) 
in accordance with the procedures specified in paragraph (k) of this 
AD.

Exact source excerpt. Text positions 24120–24501, end exclusive, in the original decoded publication. SHA-256: f51fc80d96adb45137767079ab3f582acc92cfe3e276950cfc3f2fcbc19ae751

Credit for Previous Inspections
(j) Credit for Previous Inspections

    For airplane lavatories with no previous repairs on which MRBR 
Item Number 25-185-00 was accomplished before the effective date of 
this AD, the inspection required by paragraph (g) of this AD is not 
required.

Exact source excerpt. Text positions 24501–24755, end exclusive, in the original decoded publication. SHA-256: e7efed39e9fd288c7d518008f9bc75fa8d84b4b51af1ac4847a03e89057acf5e

Alternative Methods of Compliance (AMOCs)
(k) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, AIR-520, Continued Operational Safety 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 
(l)(1) 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, AIR-
520, Continued Operational Safety 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.

Exact source excerpt. Text positions 24755–26038, end exclusive, in the original decoded publication. SHA-256: 249967767600c2d7ec9612dd5a78312c2b5b7087c0544f71148953c881c2a05f

Related Information
(l) Related Information

    (1) For more information about this AD, contact Nicole S. Tsang, 
Aviation Safety Engineer, FAA, 2200 South 216th St., Des Moines, WA 
98198; phone: 206-231-3959; email: [email protected].
    (2) Material identified in this AD that is not incorporated by 
reference is available at the address specified in paragraph (m)(3) 
this AD.

Exact source excerpt. Text positions 26038–26403, end exclusive, in the original decoded publication. SHA-256: 59201849b8a0f4d1fdcd350f0858be65cf572767b2535cff4e71c71a7bd90e8c

Material Incorporated by Reference
(m) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference of the material listed in this paragraph 
under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this material as applicable to do the actions 
required by this AD, unless the AD specifies otherwise.
    (i) Boeing Special Attention Requirements Bulletin B787-81205-
SB250302-00 RB, Issue 001, dated August 21, 2024.
    (ii) [Reserved]
    (3) For the Boeing material identified in this AD, contact 
Boeing Commercial Airplanes, Attention: Contractual & Data Services 
(C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA 90740-
5600; telephone 562-797-1717; website myboeingfleet.com.
    (4) You may view this material at the FAA, Airworthiness 
Products Section, Operational Safety Branch, 2200 South 216th St., 
Des Moines, WA. For information on the availability of this material 
at the FAA, call 206-231-3195.
    (5) You may view this material at the National Archives and 
Records Administration (NARA). For information on the availability 
of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations or email [email protected].

Exact source excerpt. Text positions 26403–27607, end exclusive, in the original decoded publication. SHA-256: 80184c1234667419465fa73b44d6b199374f7c84c4242345b3198a240925fd34

No replacement link has been established from this edition. The complete historical rule chain and current legal effect remain unknown.

Find all recorded historical references to AD 2025-20-03 · 0 printed reference observations in this pinned collection.

These are observations from one dated publication. Current legal status is unknown; aircraft applicability, installed configuration, compliance and burden require separate evidence. Missing or unparsed conditions remain unknown.

Why these observations are shown

They were extracted offline from the same immutable official HTML source as the complete recorded text. The dated source wording, original text coordinates and exact quote digests are retained. PDF/text agreement and current regulatory effect have not been qualified.

Observation revision: whole-ad-publication-clause-observations-1.0.1. Text SHA-256: f75ee712dbcf00d168880fbae6d4afd7f7a80fbe33233da75708c1569833d3f0. Source manifest: a2f79f2fa4a057094ff971c1ba0cf5ebef82f11a900999a07cf613ab1c92c891.

Official source · 2025-10-02

Publication text

This is the complete recorded text of this dated publication.

Current legal effect is unknown. Aircraft applicability, installed configuration and compliance require separate evidence. PDF/text agreement has not been evaluated.

Read the complete official publication text
[Federal Register Volume 90, Number 189 (Thursday, October 2, 2025)]
[Rules and Regulations]
[Pages 47532-47535]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2025-19390]


-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2025-0347; Project Identifier AD-2024-00441-T; 
Amendment 39-23156; AD 2025-20-03]
RIN 2120-AA64


Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

-----------------------------------------------------------------------

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 was prompted by reports of corrosion on one or more of the 
eight lower fitting assemblies and adjacent lavatory components on 
certain lavatories. This AD requires a detailed inspection of the lower 
fitting assemblies and the centerline partition threshold of the 
lavatories for corrosion, recording on the modification record placard, 
and applicable on-condition actions. This AD also requires revising the 
existing maintenance program to incorporate a detailed inspection of 
the lavatory vertical side forward fittings for corrosion or damage. 
The FAA is issuing this AD to address the unsafe condition on these 
products.

DATES: This AD is effective November 6, 2025.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of November 6, 
2025.

ADDRESSES: 
    AD Docket: You may examine the AD docket at regulations.gov under 
Docket No. FAA-2025-0347; 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 address for Docket Operations is U.S. Department of 
Transportation, Docket Operations, M-30, West Building Ground Floor, 
Room W12-140, 1200 New Jersey Avenue SE, Washington, DC 20590.
    Material Incorporated by Reference:
    <bullet> For the Boeing material identified in this AD, contact 
Boeing Commercial Airplanes, Attention: Contractual & Data Services 
(C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA 90740-5600; 
telephone 562-797-1717; website myboeingfleet.com.
    <bullet> You may view this material at the FAA, Airworthiness 
Products Section, Operational Safety Branch, 2200 South 216th St., Des 
Moines, WA. For information on the availability of this material at the 
FAA, call 206-231-3195. It is also available at regulations.gov under 
Docket No. FAA-2025-0347.

FOR FURTHER INFORMATION CONTACT: Nicole S. Tsang, Aviation Safety 
Engineer, FAA, 2200 South 216th St., Des Moines, WA 98198; phone: 206-
231-3959; email: [email protected].

SUPPLEMENTARY INFORMATION:

Background

    The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 
CFR part 39 by adding an AD that would apply to certain The Boeing 
Company Model 787-8, 787-9, and 787-10 airplanes. The NPRM was 
published in the Federal Register on April 7, 2025 (90 FR 14927). The 
NPRM was prompted by reports of corrosion on one or more of the eight 
lower fitting assemblies and adjacent lavatory components on certain 
lavatories. In the NPRM, the FAA proposed to require a detailed 
inspection of the lower fitting assemblies and the centerline partition 
threshold of the lavatories for corrosion, recording on the 
modification record placard, and applicable on-condition actions. The 
FAA also proposed to require revising the existing maintenance program 
to incorporate a detailed inspection of the lavatory vertical side 
forward fittings for corrosion or damage. The FAA is issuing this AD to 
address the unsafe condition on these products.

Discussion of Final Airworthiness Directive

Comments

    The FAA received comments from ProTech Aero Services Limited who 
supported the NPRM without change.
    The FAA received additional comments from five commenters, 
including All Nippon Airways (All Nippon), American Airlines 
(American), Boeing, and an anonymous commenter. The following presents 
the comments received on the NPRM and the FAA's response to each 
comment.

Request To Exclude Certain Airplanes From the Applicability

    American requested that the FAA revise the applicability of the 
proposed AD to exclude Model 787-8, 787-9, and 787-10 airplanes that 
have never been equipped with Jamco family 95/96 lavatories. American 
noted Boeing Special Attention Requirements Bulletin B787-81205-
SB250302-00 RB, Issue 001, dated August 21, 2024, identifies airplanes 
that were delivered with and without the Jamco family 95/96 lavatories 
and airplanes known to have been modified to be equipped with the 
affected lavatories. American also noted the requirements bulletin 
includes conditions to account for airplanes that may have been 
modified to either remove or install the affected lavatories. Based on 
this, American concluded the proposed AD is only applicable to 
airplanes that have, or have had, Jamco family 95/96 lavatories 
installed, and airplanes that have never had the affected lavatories 
installed are exempted from the inspections specified in the proposed 
AD.
    The FAA agrees to exclude airplanes that were neither delivered 
with the affected lavatories, nor equipped with the affected lavatories 
after delivery. These airplanes are identified as Group 3, 
Configuration 1, and Group 4, Configuration 3 airplanes in table 1 of 
the requirements bulletin, and no actions are required for those 
airplanes. The FAA has revised paragraph (c) of this AD accordingly.

Request To Extend the Inspection Compliance Time

    United requested that the FAA extend the compliance time for the 
inspection by 3 months. United stated that the proposed compliance time 
does not allow it to schedule the inspection for all of its affected 
airplanes during base maintenance visits, which would force some of its 
airplanes out of service.
    The FAA disagrees with commenter's request. The FAA assessed the 
risk and determined that the inspection

[[Page 47533]]

compliance times specified in the ``Compliance'' paragraph of Boeing 
Special Attention Requirements Bulletin B787-81205-SB250302-00 RB, 
Issue 001, dated August 21, 2024, are appropriate to mitigate the risk. 
The FAA considered the safety implications and normal maintenance 
schedules when establishing compliance times that adequately address 
the unsafe condition of this AD. However, under the provisions of 
paragraph (k) of this AD, the FAA will consider requests for approval 
of an extension of the compliance time if sufficient data are submitted 
to substantiate that the new compliance time would provide an 
acceptable level of safety. The FAA has not changed the AD in this 
regard.

Request To Coordinate Inspection Intervals With Operators

    A commenter requested that the FAA closely coordinate with 
operators to carefully define the inspection intervals to ensure 
operators can achieve compliance with minimal possible operational 
disruption.
    The FAA acknowledges the commenter's request but has not revised 
the AD in this regard for the same reasons noted in the FAA's response 
to the previous comment.

Request To Revise Compliance Time for Placard Recording and Maintenance 
Plan Revision

    Boeing requested the FAA add a note to paragraph (g) of the 
proposed AD to allow accomplishing the placard recording (condition 1, 
action 1 and condition 2, action 2) and maintenance plan revision 
(condition 1, action 2 and condition 2, action 3) within 38 months 
after completing the initial inspection. Boeing noted that Boeing 
Special Attention Requirements Bulletin B787-81205-SB250302-00 RB, 
Issue 001, dated August 21, 2024, specifies those actions should be 
completed before further flight after the inspection. Boeing, however, 
asserted those actions are not critical to flight safety and should not 
be required to be done before further flight for an airplane to return 
to service. Boeing stated it has no plans to revise the requirements 
bulletin to account for this.
    The FAA partially agrees with the commenter's request. The FAA 
agrees that the placard recording and maintenance plan revision are 
administrative changes that are not critical to flight safety. However, 
the FAA disagrees with extending the compliance time to 38 months after 
accomplishing the inspection. The FAA has determined that extending the 
compliance time to 90 days after accomplishing the inspection or repair 
instructions, as applicable, is an appropriate time for accomplishing 
the administrative actions. Accordingly, the FAA has added a new 
exception to paragraph (h)(2) of this AD.

Request To Reference Interim Actions

    All Nippon requested that the FAA revise the proposed AD to 
reference any interim action, such as a service bulletin or other 
relevant measure, if one is issued before the proposed AD is finalized.
    The FAA acknowledges the commenter's request, but no change is 
necessary to the AD in this regard. The FAA has determined no later 
service information or any other measure that would affect AD 
compliance has been issued in the interim. The FAA has not changed the 
AD in this regard.

Request for an Alternative Method of Compliance (AMOC)

    Boeing requested that the FAA revise the proposed AD to allow 
accomplishment of the inspection in accordance with maintenance review 
board report (MRBR) Item Number 25-185-00 for lavatories with no 
previous repairs as an AMOC to accomplishing the inspection in 
accordance with paragraph 3.A., step (3) of the Accomplishment 
Instructions of Jamco Service Bulletin B80-25-4112, Revision 2, dated 
April 24, 2024. Boeing stated that the inspections in the Jamco service 
bulletin and MRBR item are identical, and that some operators 
accomplished the inspections in accordance with the MRBR item prior to 
the service bulletin release, and those operators would like to receive 
credit.
    The FAA partially agrees. The FAA disagrees with adding an AMOC to 
this AD but agrees that an inspection accomplished before the effective 
date of this AD using MRBR Item Number 25-185-00 for lavatories with no 
previous repairs is acceptable for compliance with the inspection 
required by paragraph (g) of this AD. Accordingly, the FAA has added a 
new paragraph (j) to this AD allowing credit. The FAA notes that 
operators may apply for an AMOC in accordance with the provisions in 
paragraph (k) of this AD to use MRBR Item Number 25-185-00 as a method 
of compliance after the effective date of this AD.

Request To Revise an Exception to the Requirements Bulletin

    Boeing requested that the FAA revise paragraph (h)(2) of the 
proposed AD to state, where Boeing Special Attention Requirements 
Bulletin B787-81205-SB250302-00 RB, Issue 001, dated August 21, 2024, 
specifies contacting Boeing for repair instructions, and if those 
instructions include a modification to the maintenance actions or 
intervals specified in section (g) of the proposed AD, then the 
proposed AD requires doing the repair using a method approved in 
accordance with the procedures specified in paragraph (j) of the 
proposed AD. Boeing stated repairs that do not change the inspection 
method or interval specified in the requirements bulletin comply with 
the proposed AD.
    The FAA disagrees with Boeing's request. The exception in paragraph 
(h)(3) of this AD (corresponding to paragraph (h)(2) of the proposed 
AD) is intended to require an AMOC anytime a manufacturer needs to be 
contacted for repair instructions. Adopting the requested wording would 
allow operators to circumvent the procedures in 14 CFR 39.19, as 
specified in paragraph (k) of this AD. Since the requirements bulletin 
does not provide repair instructions or point to another source for 
repair instructions, such as an aircraft maintenance manual (AMM), an 
operator will need to contact Boeing if corrosion is found, and that 
should be done according to the procedures in paragraph (k) of this AD 
to ensure the FAA has awareness of all repair instructions. If certain 
corrosion findings can be corrected using existing procedures like an 
AMM task, then this can be addressed with a revision to the service 
information. If alternative repair instructions that go beyond what is 
specified in the current service information are needed to address the 
unsafe condition, and those repairs involve changing the inspection 
method or interval, then the service information can be revised to 
specify contacting Boeing for repair instructions for that situation. 
The FAA has not revised the AD in this regard.

Request To Clarify Inspection Procedures for Previously Repaired 
Fittings

    Boeing requested the FAA add a new exception to paragraph (h) of 
the proposed AD to clarify that the detailed inspection in paragraph 
3.A, step (4) of Jamco Service Bulletin B80-25-4112, Revision 2, dated 
April 24, 2024, is required for Jamco lavatories with basic part number 
(P/N) B80095( ) or B80096( ) on which a previous repair has been 
completed on a lavatory fitting. Boeing stated that Boeing Service 
bulletin B787-81205-SB250302-00 only points to paragraph 3.A, step (3) 
of the Jamco service bulletin as a method of compliance for the 
detailed inspection, but that step is only

[[Page 47534]]

applicable to lavatories with no previous repairs of lavatory fittings. 
Boeing also stated it has no plans to revise the corresponding service 
bulletin to account for this.
    The FAA partially agrees. The FAA agrees that paragraph 3.A., step 
(4) of the Jamco service bulletin is applicable to lavatories with a 
previous repair of a lavatory fitting with a doubler that covers the 
bottom of the fitting and extends below the access hole. These lavatory 
fittings have an additional step (4) for accessing the bottom of the 
fitting to do the detailed inspection because the doubler may hide 
corrosion. However, the FAA disagrees that paragraph 3.A., step (3) of 
the Jamco service bulletin is only applicable to lavatories with no 
previous repairs of lavatory fittings. Step (3) of the Jamco service 
bulletin is applicable to all lavatories with P/N B80095( ) or B80096( 
) because step (3) provides details on how to inspect the visible 
surfaces for corrosion. The FAA has added a new exception in paragraph 
(h)(4) of this AD to clarify that the detailed inspection must be 
accomplished using step (3) and step (4), as applicable.

Conclusion

    The FAA reviewed the relevant data, considered any comments 
received, and determined that air safety requires adopting this AD as 
proposed. Accordingly, the FAA is issuing this AD to address the unsafe 
condition on these products. Except for minor editorial changes, and 
any other changes described previously, this AD is adopted as proposed 
in the NPRM. None of the changes will increase the economic burden on 
any operator.

Material Incorporated by Reference Under 1 CFR Part 51

    The FAA reviewed Boeing Special Attention Requirements Bulletin 
B787-81205-SB250302-00 RB, Issue 001, dated August 21, 2024. This 
material specifies procedures for a detailed inspection of the eight 
lower fitting assemblies and the centerline partition threshold of the 
Jamco family 95/96 lavatories for corrosion, recording on the 
modification record placard, and applicable on-condition actions. On 
condition actions include repairing any corrosion found. This material 
also specifies revising the existing maintenance program to incorporate 
MRBR item number 25-185-00 (detailed inspection of the lavatory 
vertical side forward fittings for corrosion or damage).
    This material is reasonably available because the interested 
parties have access to it through their normal course of business or by 
the means identified in the ADDRESSES section.

Costs of Compliance

    The FAA estimates that this AD affects 159 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
----------------------------------------------------------------------------------------------------------------
Inspection and placard recording  15 work-hours x     $3,700 per          $4,975 per          Up to $4,746,150
                                   $85 per hour =      lavatory.           lavatory.           (up to 6
                                   $1,275 per                                                  lavatories per
                                   lavatory.                                                   airplane).
----------------------------------------------------------------------------------------------------------------

    The FAA has determined that revising the existing maintenance 
program takes an average of 90 work-hours per operator, although the 
agency recognizes that this number may vary from operator to operator. 
Since operators incorporate maintenance program changes for their 
affected fleet(s), the FAA has determined that a per-operator estimate 
is more accurate than a per-airplane estimate. Therefore, the FAA 
estimates the average total cost per operator to be $7,650 (90 work-
hours x $85 per work-hour).
    The FAA has received no definitive data on which to base the cost 
estimates for the on-condition repairs specified in this AD.
    The FAA has included all known costs in its cost estimate. 
According to the parts manufacturer, however, some or all of the costs 
of this AD may be covered under warranty, thereby reducing the cost 
impact on affected operators.

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,
    (2) Will not affect intrastate aviation in Alaska, and
    (3) Will not have a significant economic impact, positive or 
negative, on a substantial number of small entities under the criteria 
of the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

The Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA amends 14 CFR part 39 as follows:

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:


[[Page 47535]]


2025-20-03 The Boeing Company: Amendment 39-23156; Docket No. FAA-
2025-0347; Project Identifier AD-2024-00441-T.

(a) Effective Date

    This airworthiness directive (AD) is effective November 6, 2025.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to The Boeing Company Model 787-8, 787-9, and 
787-10 airplanes, certificated in any category, as identified in 
Boeing Special Attention Requirements Bulletin B787-81205-SB250302-
00 RB, Issue 001, dated August 21, 2024, except for airplanes 
identified as Group 3, Configuration 1; and Group 4, Configuration 3 
airplanes.

(d) Subject

    Air Transport Association (ATA) of America Code 25, Equipment/
furnishings.

(e) Unsafe Condition

    This AD was prompted by reports of corrosion on one or more of 
the eight lower fitting assemblies and adjacent lavatory components 
on the Jamco family 95/96 lavatories. The FAA is issuing this AD to 
address corrosion that could cause the lavatories to break free from 
the lower mounts during an event with high g-forces. The unsafe 
condition, if not addressed, could result in potential serious 
injury to passengers and crew or a displaced lavatory blockage that 
prevents egress through the aisle and exits.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Required Actions

    Except as specified by paragraph (h) of this AD: At the 
applicable times specified in the ``Compliance'' paragraph of Boeing 
Special Attention Requirements Bulletin B787-81205-SB250302-00 RB, 
Issue 001, dated August 21, 2024, do all applicable actions 
identified in, and in accordance with, the Accomplishment 
Instructions of Boeing Special Attention Requirements Bulletin B787-
81205-SB250302-00 RB, Issue 001, dated August 21, 2024.
    Note 1 to paragraph (g): Guidance for accomplishing the actions 
required by this AD can be found in Boeing Special Attention Service 
Bulletin B787-81205-SB250302-00, Issue 001, dated August 21, 2024, 
which is referred to in Boeing Special Attention Requirements 
Bulletin B787-81205-SB250302-00 RB, Issue 001, dated August 21, 
2024.

(h) Exceptions to Requirements Bulletin Specifications

    (1) Where the ``Effectivity'' paragraph and the Boeing 
Recommended Compliance Time columns of the tables in the 
``Compliance'' paragraph of Boeing Special Attention Requirements 
Bulletin B787-81205-SB250302-00 RB, Issue 001, dated August 21, 
2024, refer to the Issue 001 date of Requirements Bulletin B787-
81205-SB250302-00 RB, this AD requires using the effective date of 
this AD.
    (2) Where the Boeing Recommended Compliance Time columns of the 
tables in the ``Compliance'' paragraph of Boeing Special Attention 
Requirements Bulletin B787-81205-SB250302-00 RB, Issue 001, dated 
August 21, 2024, for Condition 1, Action 1 and Action 2; and 
Condition 2, Action 2 and Action 3, specify modifying the record 
placard and incorporating Maintenance Review Board Report (MRBR) 
Item Number 25-185-00 ``Before further flight'', this AD requires 
replacing that text with ``Within 90 days''.
    (3) Where Boeing Special Attention Requirements Bulletin B787-
81205-SB250302-00 RB, Issue 001, dated August 21, 2024, specifies 
contacting Boeing for repair instructions, this AD requires doing 
the repair using a method approved in accordance with the procedures 
specified in paragraph (k) of this AD.
    (4) Where the Method of Compliance columns in the 
``Accomplishment Instructions'' paragraph of Boeing Special 
Attention Requirements Bulletin B787-81205-SB250302-00 RB, Issue 
001, dated August 21, 2024, specifies doing a detailed inspection 
using ``Paragraph 3.A. step (3)'', this AD requires replacing that 
text with ``Paragraph 3.A. step (3) and step (4), as applicable''.

(i) No Alternative Actions and Intervals

    After the existing maintenance program has been revised as 
required by paragraph (g) of this AD, no alternative actions (e.g., 
inspections) or intervals may be used unless the actions or 
intervals are approved as an alternative method of compliance (AMOC) 
in accordance with the procedures specified in paragraph (k) of this 
AD.

(j) Credit for Previous Inspections

    For airplane lavatories with no previous repairs on which MRBR 
Item Number 25-185-00 was accomplished before the effective date of 
this AD, the inspection required by paragraph (g) of this AD is not 
required.

(k) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, AIR-520, Continued Operational Safety 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 
(l)(1) 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, AIR-
520, Continued Operational Safety 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.

(l) Related Information

    (1) For more information about this AD, contact Nicole S. Tsang, 
Aviation Safety Engineer, FAA, 2200 South 216th St., Des Moines, WA 
98198; phone: 206-231-3959; email: [email protected].
    (2) Material identified in this AD that is not incorporated by 
reference is available at the address specified in paragraph (m)(3) 
this AD.

(m) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference of the material listed in this paragraph 
under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this material as applicable to do the actions 
required by this AD, unless the AD specifies otherwise.
    (i) Boeing Special Attention Requirements Bulletin B787-81205-
SB250302-00 RB, Issue 001, dated August 21, 2024.
    (ii) [Reserved]
    (3) For the Boeing material identified in this AD, contact 
Boeing Commercial Airplanes, Attention: Contractual & Data Services 
(C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA 90740-
5600; telephone 562-797-1717; website myboeingfleet.com.
    (4) You may view this material at the FAA, Airworthiness 
Products Section, Operational Safety Branch, 2200 South 216th St., 
Des Moines, WA. For information on the availability of this material 
at the FAA, call 206-231-3195.
    (5) You may view this material at the National Archives and 
Records Administration (NARA). For information on the availability 
of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations or email [email protected].

    Issued on September 23, 2025.
Peter A. White,
Deputy Director, Integrated Certificate Management Division, Aircraft 
Certification Service.
[FR Doc. 2025-19390 Filed 10-1-25; 8:45 am]
BILLING CODE 4910-13-P


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