Airbus Alert Operators Transmission A25P023-22

CUSTOMER SERVICES DIRECTORATE 2 ROND POINT EMILE DEWOITINE 31700 BLAGNAC FRANCE TELEPHONE + 33 (0)5 61 93 33 33

ALERT OPERATORS TRANSMISSION - AOT AOT ref: A25P023-22 Rev 03 Page 1 of 16 Date: 16-JAN-2024 C80_AOT_FM1104649_v8.0 © AIRBUS S.A.S. 2024. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT SUBJECT: ATA 25 – Fractured lower attachment studs in the AFT Galley complex AIRCRAFT TYPE: A350 OUR REF.: A25P023-22 Rev 03 dated 16-Jan-2024 OUR PREVIOUS REF.: A25P023-22 Rev 02 dated 30-Nov-2023 OUR PREVIOUS REF.: A25P023-22 Rev 01 dated 27-Sept-2022 OUR PREVIOUS REF.: A25P023-22 Rev 00 dated 20-Sept-2022 EFFECTIVITY DATE: 16-Jan-2024 + 03 days ***BEG REV***

0. REASON FOR REVISION This AOT is revised for the following reasons:

- Correct the AOT reference in the re-identification instructions from paragraph 5.6 INSTRUCTIONS – (RC): correct AOT reference is A25P023-22 (in lieu of AOT reference A25P026-23)

- Update the Appendix A - List of amendments with all the missing Galley Part Numbers and corresponding Amendment letters The revised paragraphs are indicated between ***BEG REV*** and ***END REV***.

***END REV***

1. AIRCRAFT AFFECTED Applicability by aircraft MSN:

A350-1000:

Aircraft MSN: 00065, 00071, 00088, 00102, 00110, 00118, 00125, 00141, 00161, 00169, 00188, 00206, 00215, 00225, 00229, 00233, 00241, 00252, 00258, 00262, 00266, 00274, 00286, 00290, 00296, 00298.

A350-900:

Aircraft MSN: 00044, 00049, 00050, 00052, 00055, 00056, 00057, 00060, 00066, 00067, 00073, 00074, 00080, 00082, 00086, 00087, 00091, 00092, 00094, 00095, 00098, 00105, 00111, 00112, 00115, 00117, 00121, 00123, 00124, 00127, 00129, 00130, 00132, 00135, 00136, 00138, 00142, 00143- 00145, 00146, 00149-00151, 00153, 00157, 00159, 00160, 00162-00165, 00167, 00168, 00172-00179, 00181-00185, 00187, 00189-00193, 00195, 00197-00199, 00201-0204, 00207-00214, 00217, 00218, 00221, 00224, 00228, 00231, 00234-00237, 00239, 00240, 00243, 00246-00247, 00249, 00251, 00255, 00256, 00257, 00260, 00267, 00268, 00270, 00277, 00279, 00280, 00281, 00283, 00284, 00285, 00287, 00292, 00295, 00297, 00299.

ALERT OPERATORS TRANSMISSION - AOT AOT ref: A25P023-22 Rev 03 Page 2 of 16 Date:

16-JAN-2024 C80_AOT_FM1104649_v8.0 © AIRBUS S.A.S. 2024. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT Configuration (CONF) applicability by aircraft MSN:

CONF 001: Aircraft MSN: 00044, 00087, 00095, 00118, 00136, 00142, 00146, 00153, 00157, 00161, 00163, 00167, 00168, 00169, 00172, 00174, 00176, 00177, 00178, 00181, 00184-00185, 00187- 00189, 00193, 00198, 00201, 00202, 00206, 00207, 00209, 00211, 00212, 00214, 00215, 00217, 00218, 00221, 00224, 00225, 00228, 00229, 00231, 00233-00237, 00240, 00241, 00243, 00246- 00247, 00249, 00251, 00252, 00255, 00262, 00286, 00296.

NOTE: A/C part of CONF 001:

- Do not have Galley G4M/TC4M installed, or have Galley G4M/TC4M installed, but this installed Galley G4M/TC4M is not fitted with studs PN XP14-070-007800.

CONF 002: Aircraft MSN: 00056, 00067, 00086, 00129, 00149, 00150, 00151, 00159, 00160, 00162, 00164, 00165, 00173, 00175, 00179, 00182, 00183, 00190, 00191, 00192, 00195, 00197, 00199, 00203, 00204, 00208, 00210, 00213, 00239, 00279, 00297.

NOTE: A/C part of CONF 002:

- Have the Galley G4M/TC4M installed, and this installed Galley G4M/TC4M is fitted with studs PN XP14-070-007800.

CONF 003: Aircraft MSN: 00050, 00052, 00055, 00060, 00065, 00074, 00080, 00082, 00088, 00091, 00094, 00098, 00102, 00110-00112, 00117, 00123-00125, 00127, 00130, 00132, 00141, 00143-00145, 00256-00258, 00260, 00266, 00268, 00270, 00280, 00281, 00283-00285, 00287, 00292, 00295, 00299.

NOTE: A/C part of CONF 003:

- Do not have Galley G4M/TC4M installed, or have Galley G4M/TC4M installed, but this installed Galley G4M/TC4M is not fitted with studs PN XP14-070-007800.

CONF 004: Aircraft MSN: 00049, 00057, 00066, 00071, 00073, 00092, 00105, 00115, 00121, 00135, 00138, 00267, 00274, 00277, 00290, 00298.

NOTE: A/C part of CONF 004:

- Have the Galley G4M/TC4M installed, and this installed Galley G4M/TC4M is fitted with studs PN XP14-070-007800.

2. REFERENCED DOCUMENTATION

2.1 APPENDIX

Appendix A: List of amendments Appendix B: Reporting sheet

2.2 REFERENCES Reference 1: AOT A25P026-23 – “Wrong Maintenance Procedure installation of the Galley Lower attachment studs” Reference 2: Maintenance Procedure (MP) TASK A350-A-25-31-51-02001-170A-A – “Get Access to the Lower Attachment of Galley G4AR” Reference 3: MP TASK A350-A-25-31-53-00001-170A-A – “Get Access to the Lower Attachment of Galley G4A” Reference 4: MP TASK A350-A-25-31-47-00001-170A-A – “Get Access to the Lower Attachment of Galley G4AL” Reference 5: MP TASK A350-A-25-31-49-00001-170A-A – “Get Access to the Lower Attachment of Galley/Trolley Compartment G4M/TC4M” Reference 6: MP TASK A350-A-25-31-XX-02001-310A-A – “Detailed Inspection of Galley Attachments” Reference 7: MP TASK A350-A-25-31-51-00002-520A-A – “Removal of Galley G4AR” SUBTASK 253151-4010XXXXXXX - “Removal of the lower attachments”

ALERT OPERATORS TRANSMISSION - AOT AOT ref: A25P023-22 Rev 03 Page 3 of 16 Date:

16-JAN-2024 C80_AOT_FM1104649_v8.0 © AIRBUS S.A.S. 2024. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT Reference 8: MP TASK A350-A-25-31-53-00001-520A-A – “Removal of Galley G4A” SUBTASK 253153-4010XXXXXXX- “Removal of the lower attachments” Reference 9: MP TASK A350-A-25-31-47-00001-520A-A – “Removal of Galley G4AL” SUBTASK 253147-4010XXXXXXX - “Removal of the lower attachments” Reference 10: MP TASK A350-A-25-31-49-00001-520A-A – “Removal of Galley/Trolley Compartment G4M/TC4M” SUBTASK 253149-4010XXXXXXX – “Removal of the lower attachments” Reference 11: MP TASK A350-A-25-31-XX-00001-720A-A - SUBTASK 2531XX-4010XXXXXXX – “Installation of the Lower Attachments” Reference 12: MP TASK A350-A-25-31-51-03001-170A-A – “Close the Access to the Lower Attachments of Galley G4AR” Reference 13: MP TASK A350-A-25-31-53-01001-170A-A – “Close the Access to the Lower Attachments of Galley G4A” Reference 14: MP TASK A350-A-25-31-47-01001-170A-A – “Close the Access to the Lower Attachments of Galley G4AL” Reference 15: MP TASK A350-A-25-31-49-01001-170A-A – “Close the Access to the Lower Attachments of Galley/Trolley Compartment G4M/TC4M” Reference 16: EASA Airworthiness Directive AD No. 2022-0196 “ATA 25 – Equipment / Furnishings – AFT Galley Complex Lower Attachment Studs – Inspection / Replacement” issued on 20-Sep-2022 Reference 17: Vendor Service Bulletin (VSB) Ref. 25-30-1899 – “Equipment/Furnishing - Passenger Compartment - Galley - Replacement of Floor Fitting Threaded Stud” Reference 18: Airbus Cover Service Bulletin (SB) Ref. 25-P210

3. REASON This AOT is issued to inform the operators about:

- The risk of lower attachment studs PN XP14-070-007800 failure on the AFT Galley complex:

oGalley G4AR, oGalley G4A, oGalley G4AL, and oGalley G4M/TC4M if installed and equipped with PN XP14-070-007800.

- The required inspections, the corrective actions in case of lower attachment stud(s), from the AFT Galley complex, found fractured and the terminating action with the active retrofit of a new stud PN XP14-070-019100.

ALERT OPERATORS TRANSMISSION - AOT AOT ref: A25P023-22 Rev 03 Page 4 of 16 Date:

16-JAN-2024 C80_AOT_FM1104649_v8.0 © AIRBUS S.A.S. 2024. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT Figure 1: Picture of a fractured stud found in a Galley G4AL Figure 2: Detailed picture of a fractured stud

ALERT OPERATORS TRANSMISSION - AOT AOT ref: A25P023-22 Rev 03 Page 5 of 16 Date:

16-JAN-2024 C80_AOT_FM1104649_v8.0 © AIRBUS S.A.S. 2024. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT

3.1 FACTS Airbus informs the operators that, during routine inspections, two operators discovered fractured lower attachment studs from the AFT Galley complex.

3.2 HISTORY/BACKGROUND Following the findings of fractured lower attachment studs from the AFT Galley complex, Airbus dispatched AOT Rev 01 for CONF 001 and CONF 002 aircraft. This AOT Rev 01 recommended to inspect all the lower attachment studs PN XP14-070-007800 of the AFT Galley complex and the replacement of all the lower attachment studs PN XP14-070-007800 (with PN XP14-070-019100) of the AFT Galley complex in case one was found fractured in the aircraft.

3.3 ROOT CAUSE The root cause is the hydrogen induced failure on the attachment studs PN XP14-070-007800. It has been confirmed by laboratory analysis that the attachment studs PN XP14-070-007800 manufactured by a specific supplier can be subject to Stress Corrosion Cracking (SCC).

3.4 INVESTIGATION The investigation shows that the lower attachment studs found fractured, were impacted by hydrogen induced failure. SCC has been identified as the main driver to the hydrogen induced failure. The SCC failure mechanism is also worsened by a wrong manufacturing of the attachment studs. The manufacturing process has been improved from A350 MSN 287.

Furthermore, during investigation, Airbus discovered that the MP tasks to perform the installation of the lower attachment studs on Galleys were providing wrong instructions to the operators. Therefore, the AOT Reference 1 was dispatched to inform the operators and provide the required inspections and corrective actions.

3.5 CONSEQUENCES In the event of multiple fractured studs, there is a risk of galley detachment and movement, which could lead to:

- Serious or fatal personal injuries among cabin crew members and passengers,

- Unavailability of up to two (2) opposite exits in case of an emergency evacuation,

- Effect(s) on system(s) and/or structure.

4. OBJECTIVES OF THIS AOT This AOT recommends:

- The inspection of all the lower attachment studs PN XP14-070-007800 of the AFT Galley complex if not already performed in accordance with AOT Rev 01.

- The replacement of all the attachment studs PN XP14-070-007800 (with PN XP14-070- 019100) of the AFT Galley complex when not already done in accordance with AOT Rev 01.

NOTE: The new stud PN XP14-070-019100 has an improved heat treatment to make it more resistant against stress corrosion cracking.

ALERT OPERATORS TRANSMISSION - AOT AOT ref: A25P023-22 Rev 03 Page 6 of 16 Date:

16-JAN-2024 C80_AOT_FM1104649_v8.0 © AIRBUS S.A.S. 2024. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT

5. MAINTENANCE PROCEDURE NOTE: This AOT is classified mandatory or expected to be classified mandatory by an Airworthiness Directive (AD). If the instructions of this AOT are marked as Required for Compliance (RC), the operator must follow the instructions as indicated. These instructions are introduced by “in accordance with”.

NOTE: The instructions of this AOT include procedures given in other documents or in other sections of the AOT. If the instructions of this AOT are NOT marked as Required for Compliance (RC), the operator can use an alternative procedure accepted by his/her local authority. These instructions are introduced by “refer to”.

NOTE: When this AOT gives the access or close-up instructions with no return to service tests, the operator can adapt these instructions to add flexibility to the maintenance operations. The technical intent of this AOT must comply with the set parameters.

5.1 PLANNING (RC) For CONF 001 / CONF 002 In case the inspection of the lower attachment studs on the AFT Galley complex (Galleys G4AR, G4A, G4AL and, for CONF 002 only, G4M/TC4M):

- Has NOT been performed in accordance with AOT rev 01:

The inspection has to be performed in accordance with paragraph 5.4 before next flight.

- Has been performed in accordance with AOT rev 01 and:

In case there was NO finding (in accordance with paragraph 5.5): the replacement of all the lower attachment studs PN XP14-070-007800 (with PN XP14-070-019100) on the AFT Galley complex (Galleys G4AR, G4A, G4AL and, for CONF 002 only, G4M/TC4M) has to be performed in accordance with paragraph 5.6 within 4400FH after the last inspection, In case the replacement of all the lower attachment studs PN XP14-070-007800 (with PN XP14-070-019100) on the AFT Galley complex (Galleys G4AR, G4A, G4AL and, for CONF 002 only, G4M/TC4M) has been performed, no further action is required.

For CONF 003 / CONF 004

- The inspection of the lower attachment studs on the AFT Galley complex (Galleys G4AR, G4A, G4AL and, for CONF 004 only, G4M/TC4M) has to be performed in accordance with paragraph

5.4 within the next 6 months from AOT rev 2 effectivity date.

- The replacement of all the lower attachment studs PN XP14-070-007800 (with PN XP14-070- 019100) on the AFT Galley complex (Galleys G4AR, G4A, G4AL and, for CONF 004 only, G4M/TC4M) has to be performed in accordance with paragraph 5.6:

In case there is a finding (in accordance with paragraph 5.5): before next flight or, In case there was no finding (in accordance with paragraph 5.5): within the next 4400FH after the inspection has been performed.

NOTE: To get an overview on planning, inspection and associated corrective actions refer to Figure 3 for the related flowchart.

AIRBUS

ALERT OPERATORS TRANSMISSION - AOT Aircraft part of AOT Rev 01 Within 6 months from AOT applicability list? Rev 02 effectivity date Inspection already performed according to • Before next flight AOT Rev 01?

Aircraft already retrofited Do a detailed inspection of all the lower with studs PN XP14-070-019100 attachment studs PN XP14-070-007800 on the on the AFT complex Galley AFT Galley complex(Galleys G4AR, G4A, and according to AOT Rev 01 G4AL and G4M/TC4M for CONF 002 / CONF 004) A lower attachment stud PN XP14-070-007800 found fractured?

Within 4400 FH after the last inspection Before next flight Terminating action:

Perform the replacement of all the lower No further action attachement studs PN XP14-070-007800 (with Within 4400FH after PN XP14-070-019100) on the AFT complex the inspection Galley (Galleys G4AR, G4A, and G4AL and G4M/TC4M for CONF 002 / CONF 004) Figure 3: Flowchart

5.2 MANPOWER The estimated time to perform the AOT instructions is:

• To perform the inspection of the lower attachment studs PN XP14-070-007800 on the AFT Galley complex (Galleys G4AR, G4A, G4AL and, for CONF 002 / CONF 004 only, G4M/TC4M):

2 Man Hours To perform the replacement of all the lower attachment studs PN XP14-070-007800 on the AFT Galley complex (Galleys G4AR, G4A, G4AL and, for CONF 002 / CONF 004 only, G4M/TC4M) in case there is a stud found broken:

• 6,5 Man Hours for CONF 001 and CONF 003.

7 Man Hours for CONF 002 and CONF 004.

NOTE: Work in parallel could be done, reducing the required elapsed time for the replacement.

AOT ref: A25P023-22 Rev 03 Page 7 of 16 Date:

16-JAN-2024 C80_AOT_FM1104649_V8.0 © AIRBUS S.A.S. 2024. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT

ALERT OPERATORS TRANSMISSION - AOT AOT ref: A25P023-22 Rev 03 Page 8 of 16 Date:

16-JAN-2024 C80_AOT_FM1104649_v8.0 © AIRBUS S.A.S. 2024. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT NOTE: When launching this inspection, it is recommended to make sure that sufficient time is available before next flight, to perform the corrective action in case of finding.

5.3 ACCESS To get access to the lower attachment studs of the AFT Galley complex (Galleys G4AR, G4A, G4AL and, for CONF 002 / CONF 004 only, G4M/TC4M), depending on the applicable A/C MSN documentation, refer:

- Either respectively to Reference 2, Reference 3, Reference 4 and Reference 5 of this AOT (called out by Reference 6),

- Or to Reference 6 / SUBTASK 2531XX-10101200001 “B. Get Access” (disregard steps (2) and

(3)).

5.4 INSPECTION – (RC) NOTE: Airbus recommends to perform the inspection of this AOT together with AOT Reference 1, if applicable to the aircraft.

NOTE: Refer to paragraph 5.1 and to Figure 3 to identify if the inspection has to be performed.

CONF 001 / CONF 002 / CONF 003 / CONF 004

- Inspect all the lower attachment studs PN XP14-070-007800 on the AFT Galley complex (Galleys G4AR, G4A, G4AL and, for CONF 004 only, G4M/TC4M) in accordance with Reference 6.

NOTE: Disregard step (3) of SUBTASK 2531XX-60000010001 (or SUBTASK 2531XX- 60000020001 depending on the applicable A/C MSN documentation) “A. Detailed Inspection of the Galley Attachments”, which provides inspection procedure for the upper attachment of galleys.

MP SUBTASK 2531XX-60000010001 (or SUBTASK 2531XX-60000020001 depending on the applicable A/C MSN documentation) “A. Detailed Inspection of the Galley Attachments” step

(1) is to be applied for the lower attachments and fittings only.

NOTE: Regarding Galley G4A, all locations “B”, “C” and “D” attachment studs (see Figure 4) have to be inspected. Locations “A” do not have the same attachment principle and are not part of the inspection requested by this AOT.

ALERT OPERATORS TRANSMISSION - AOT AOT ref: A25P023-22 Rev 03 Page 9 of 16 Date:

16-JAN-2024 C80_AOT_FM1104649_v8.0 © AIRBUS S.A.S. 2024. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT Figure 4: Galley G4A lower attachments

- In case of finding (in accordance with paragraph 5.5), perform the replacement of all the lower attachment studs PN XP14-070-007800 (with PN XP14-070-019100) on the AFT Galley complex (Galleys G4AR, G4A, G4AL and, for CONF 004 only, G4M/TC4M) in accordance with paragraph 5.6 before next flight.

5.5 FINDINGS – (RC) There is a finding when a lower attachment stud on the AFT Galley complex is found fractured.

5.6 INSTRUCTIONS – (RC) NOTE: Airbus recommends to perform the instructions of this AOT together with AOT Reference 1, if applicable to the aircraft.

NOTE: Refer to paragraph 5.1, paragraph 5.4 and to Figure 3 to confirm the planning of the replacement of the lower attachment studs on the AFT Galley complex.

Perform the replacement of all the lower attachment studs PN XP14-070-007800 (with PN XP14-070- 019100) on the AFT Galley complex (Galleys G4AR, G4A, G4AL and, for CONF 002 / CONF 004 only, G4M/TC4M):

CONF 001 / CONF 002 / CONF 003 / CONF 004

- Remove all the lower attachment studs PN XP14-070-007800 on the AFT Galley complex in accordance with:

For Galley G4AR: Reference 7 For Galley G4A: Reference 8 For Galley G4AL: Reference 9

ALERT OPERATORS TRANSMISSION - AOT AOT ref: A25P023-22 Rev 03 Page 10 of 16 Date:

16-JAN-2024 C80_AOT_FM1104649_v8.0 © AIRBUS S.A.S. 2024. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT NOTE: Regarding Galley G4A, locations “A” (see Figure 4) do not have the same attachment principle and are not in the scope of this AOT (no replacement of locations “A” attachments).

CONF 002 / CONF 004 -Remove all the lower attachment studs PN XP14-070-007800 on Galley G4M/TC4M in accordance with Reference 10.

CONF 001 / CONF 002 / CONF 003 / CONF 004

- Discard all the removed lower attachment studs PN XP14-070-007800.

- Install the new lower attachment studs PN XP14-070-019100 (to replace all the removed studs PN XP14-070-007800) on the AFT Galley complex in accordance with the following procedure:

1. Install the threaded studs (161), (162) and (169).

2. Make sure that the distance between the tops of the threaded sleeves (146) and (150) and the threaded studs (161), (162) and (169) is a maximum of 28 mm (1.10 in.).

3. Install the other floor attachment parts as follows:

a) Install the anti-rotation spring clips (163), the washers (160) and the nuts (159). Hold the threaded studs (161), (162) and (169) with an Allen key during installation of the nuts (159).

b) TORQUE the nuts (159) to between 2.25 and 2.45 m.daN (16.60 and 18.07 lbf.ft). Hold the threaded studs (161), (162) and (169) with an Allen key during torquing of the nuts

(159).

c) Apply a thin layer of 12AEB1 (Corrosion Preventive Compound_Heavy Duty Long Durability Hard Film -) on:

o The heads of the threaded studs (161), (162) and (169) o The nuts (159) o The washers (160).

d) Use 04JME4 (Top Coat Polyurethane_- Grey Internal Structure) and the PAINTBRUSH to make red marks on:

oThe heads of the threaded studs (161), (162) and (169) oThe nuts (159) oThe washers (160).

NOTE: Refer to Figure 5 for the sub-parts numbering details.

ALERT OPERATORS TRANSMISSION - AOT AOT ref: A25P023-22 Rev 03 Page 11 of 16 Date:

16-JAN-2024 C80_AOT_FM1104649_v8.0 © AIRBUS S.A.S. 2024. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT

Figure 5: Typical view of Galley G4AL

- Close the access to the lower attachment of the AFT Galley complex (Galleys G4AR, G4A, G4AL and, for CONF 002 / CONF 004 only, G4M/TC4M), depending on the applicable aircraft MSN documentation, refer to, respectively, Reference 12, Reference 13, Reference 14 and Reference 15 of this AOT.

***BEG REV***

- Re-identify the equipment (Galleys G4AR, G4A and G4AL):

Locate Makers Ident Labels in trolley compartments of each Galley.

On the Modification label of each Galley, using a permanent marker, write in the next available slot A25P023-22 (See Figure 6).

On the AMDT Module placard of each Galley, using a permanent marker, cross the amendment letter as indicated in the attached Appendix A for the applicable Galley PN.

***END REV***

ALERT OPERATORS TRANSMISSION - AOT AOT ref: A25P023-22 Rev 03 Page 12 of 16 Date:

16-JAN-2024 C80_AOT_FM1104649_v8.0 © AIRBUS S.A.S. 2024. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT Figure 6: Typical Maker Ident Labels NOTE: The re-identification shall be performed at the time of replacement of all the lower attachment studs PN XP14-070-007800 with PN XP14-070-019100.

***BEG REV*** CONF 002 / CONF 004

- Re-identify the equipment (Galley G4M/TC4M):

Locate Makers Ident Labels in trolley compartments.

On the Modification label, using a permanent marker, write in the next available slot A25P023-22 (See Figure 6).

On the AMDT Module placard, using a permanent marker, cross the amendment letter as indicated in the attached Appendix A for the applicable Galley PN.

NOTE: The re-identification shall be performed at the time of replacement of all the lower attachment studs PN XP14-070-007800 with PN XP14-070-019100 ***END REV*** CONF 001 / CONF 002 / CONF 003 / CONF 004

- After replacement of all attachment studs PN XP14-070-007800 with PN XP14-070-019100 on the AFT Galley complex (Galleys G4AR, G4A, G4AL and, for CONF 002 / CONF 004 only, G4M/TC4M), no further action is required in accordance with this AOT on those Galleys.

5.7 SPARES AND TOOLING

1) Spares CONF 001 / CONF 003 Reference (PN) QTY DESIGNATION XP14-070-019100 28 Threaded Studs CONF 002 / CONF 004 Reference (PN) QTY DESIGNATION XP14-070-019100 32 Threaded Studs