# Airbus Alert Operators Transmission A35P015-19 ## Copies (4) Copies the FAA filed in AD dockets on regulations.gov, newest revision first. A newer revision may exist. - Revision 01 ("AOT A35P015-19 R00"), 4 pages: PDF https://openairdocs.org/files/sha256/c2/f0/c2f0dfff1758b809ee16d5dcbc40d65b71c55bda75eae68e5c686641140708dd; text https://openairdocs.org/service-documents/airbus/aot-a35p015-19/file/c2f0dfff1758.md. Rights: © Airbus S.A.S. Filed by the FAA in regulations.gov docket FAA-2019-0721, the docket of AD 2020-02-14. Not covered by OpenAirDocs’ CC0 dedication. - Revision 01 ("AOT A35P015-19 R01"), 4 pages: PDF https://openairdocs.org/files/sha256/18/da/18da1fe842a22a1eab07fd7ce64c6e704d395ade59307b65acb2c72a3abd7505; text https://openairdocs.org/service-documents/airbus/aot-a35p015-19/file/18da1fe842a2.md. Rights: © Airbus S.A.S. Filed by the FAA in regulations.gov docket FAA-2019-0721, the docket of AD 2020-02-14. Not covered by OpenAirDocs’ CC0 dedication. - Revision 01 ("AOT_A35P015-19_Rev00"), 4 pages: PDF https://openairdocs.org/files/sha256/5c/78/5c78ed313b58f0bac77319357438a83e61d8f139038fb7a51983c109c936ef95; text https://openairdocs.org/service-documents/airbus/aot-a35p015-19/file/5c78ed313b58.md. Rights: © Airbus S.A.S. Filed by the FAA in regulations.gov docket FAA-2025-0742; AD 2025-18-06 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. - Revision 01 ("AOT_A35P015-19_Rev01"), 4 pages: PDF https://openairdocs.org/files/sha256/3c/c4/3cc47c8cab9c04fe479d6a1d0bb452471a2bbbd3429d86c936c721c64b21cde8; text https://openairdocs.org/service-documents/airbus/aot-a35p015-19/file/3cc47c8cab9c.md. Rights: © Airbus S.A.S. Filed by the FAA in regulations.gov docket FAA-2025-0742; AD 2025-18-06 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. ## Details - Manufacturer: [Airbus](https://openairdocs.org/service-documents/airbus.md) - Type: Other document (Alert Operators Transmission) - Number: A35P015-19 - Latest revision known: A35P015-19, Revision 01, dated June 19, 2019 (OpenAirDocs) - Page: https://openairdocs.org/service-documents/airbus/aot-a35p015-19 ## ADs that cite it (2) (OpenAirDocs) Newest first, with the revision each names, as OpenAirDocs read it from the AD's text. - [AD 2025-18-06](https://openairdocs.org/ad/2025-18-06.md), effective Oct 23, 2025: Revision 01 - [AD 2020-02-14](https://openairdocs.org/ad/2020-02-14.md), effective Mar 12, 2020: Revision 01 Also cited in [1 proposed AD](https://openairdocs.org/service-documents/airbus/aot-a35p015-19/proposed.md). ## Text (4 pages) Revision 01, the newest copy. Rights: © Airbus S.A.S. Filed by the FAA in regulations.gov docket FAA-2019-0721, the docket of AD 2020-02-14. Not covered by OpenAirDocs’ CC0 dedication. Each page's text from the PDF; open the PDF at a page with #page=N. ### Page 1 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: A35P015-19 Rev 00 Page 1 of 4 Date: 03-APR-2019 © AIRBUS S.A.S. 2019. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT SUBJECT: ATA 35 – INSPECTION OF CABIN OXYGEN CONTAINERS INSTALLATION AIRCRAFT TYPE: A350 OUR REF.: A35P015-19 Rev 00 dated 03-APR-2019 1. AIRCRAFT AFFECTED A350-900/1000: 00005, 00006, 00007, 00008, 00009, 00010, 00011, 00012, 00013, 00014, 00015, 00016, 00017, 00018, 00019, 00020, 00021, 00022, 00023, 00024, 00025, 00026, 00027, 00028, 00029, 00030, 00031, 00032, 00033, 00034, 00035, 00036, 00037, 00038, 00039, 00040, 00041, 00042, 00043, 00044, 00045, 00046, 00047, 00048, 00049, 00050, 00051, 00052, 00053, 00054, 00055, 00056, 00057, 00058, 00060, 00061, 00062, 00063, 00064, 00066, 00067, 00068, 00069, 00070, 00072, 00073, 00074, 00075, 00076, 00077, 00078, 00079, 00080, 00081, 00082, 00083, 00084, 00085, 00086, 00087, 00088, 00089, 00090, 00091, 00092, 00093, 00094, 00095, 00096, 00097, 00098, 00099, 00100, 00101, 00102, 00103, 00104, 00105, 00106, 00107, 00109, 00110, 00111, 00112, 00113, 00114, 00115, 00116, 00117, 00118, 00119, 00120, 00121, 00122, 00123, 00124, 00125, 00126, 00127, 00128, 00129, 00130, 00132, 00133, 00134, 00135, 00136, 00137, 00138, 00140, 00141, 00142, 00143, 00144, 00145, 00146, 00147, 00148, 00149, 00150, 00151, 00153, 00154, 00155, 00157, 00158, 00159, 00160, 00162, 00163, 00164, 00165, 00167, 00168, 00169, 00170, 00172, 00173, 00174, 00175, 00176, 00177, 00178, 00179, 00180, 00181, 00182, 00183, 00184, 00185, 00186, 00187, 00188, 00189, 00190, 00191, 00192, 00193, 00195, 00196, 00197, 00198, 00199, 00200, 00201, 00202, 00203, 00204, 00205, 00206, 00207, 00208, 00209, 00210, 00212, 00213, 00216, 00217, 00218, 00219, 00220, 00221, 00223, 00225, 00227, 00228, 00230, 00232, 00233, 00235, 00236, 00238, 00239, 00240, 00243, 00247, 00248, 00252, 00255, 00256, 00259, 00263. 2. REFERENCED DOCUMENTATION REF. 1: MP TASK A350-A-35-21-36-00001-720A-A installation of the Oxygen Container REF. 2: MP A350-A-35-21-XX-00ZZZ-320Z-A Operational Check of Manual Mask Release Including Check of Container Opening for Chemical Oxygen System 3. REASON 3.1 FACTS During inspection of the installation of oxygen containers in production, it has been found that some fasteners of oxygen containers and the adjacent panels (Passenger Service Unit (PSU), spacers or filler panels) were damaged or unlocked. Further investigations identified several aircraft in production that were similarly affected and these were corrected prior to delivery. ### Page 2 ALERT OPERATORS TRANSMISSION - AOT AOT ref: A35P015-19 Rev 00 Page 2 of 4 Date: 03-APR-2019 © AIRBUS S.A.S. 2019. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT Oxygen containers and adjacent panels’ fasteners need to be locked in order to prevent them from potentially moving on the rails that could lead to reduce the gap between these components. 3.2 CONSEQUENCES Insufficient gap between the oxygen container and the adjacent panels could lead to prevent the opening of the oxygen containers and consequently to potential failure of deploying the oxygen masks in case of decompression. Therefore, in case of a cabin depressurization event, passengers would not be able to reach the oxygen masks while seated. 3.3 AIM This AOT requires a one-time inspection of the installation of the oxygen containers and the other panels all Passenger Supply Channels (PSC) to ensure a correct gap between these components and to lock the component’ fasteners if found unlocked as described in paragraph 4.2. 4. SHORT TERM ACTION 4.1 PLANNING AND MANPOWER 4.1.1 ACCOMPLISHMENT TIMESCALE The inspection as per paragraph 4.2 must be performed within 9 months from the issue date of this AOT. 4.1.2 MANPOWER oElapsed time per aircraft is estimated at: 4 Man/Hour to check and tighten the fasteners if needed. oElapsed time per oxygen container is estimated at: 0.5 Man/Hour to replace a fixation element if needed. oElapsed time of the operational check of the manual mask release is estimated at: 2 Man/Hour if needed. 4.2 DESCRIPTION For each panel located in each Passenger Supply Channel (PSC): 1. Check that each fastener of each panel/component is locked as it is shown in the following images: ### Page 3 ALERT OPERATORS TRANSMISSION - AOT AOT ref: A35P015-19 Rev 00 Page 3 of 4 Date: 03-APR-2019 © AIRBUS S.A.S. 2019. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT Not Locked 2. If one or more fasteners are found unlocked on an oxygen container or an oxygen container adjacent panel: a. Check that a minimum clearance of 2.0 mm between the oxygen container door lid and the adjacent panel/component is correct. As per MP TASK A350-A-35-21-36-00001- 720A-A - Installation of the Oxygen Container. b. Lock the fastener by using an Allen key 1/8in, turn the screw one quarter turn clockwise. 3. If one or more fasteners are found unlocked on other panels: a. Lock the fastener by using an Allen key 1/8in, turn the screw one quarter turn clockwise. 4. If a fixation element is found damaged and the fastener could not be locked correctly: a. Replace the damaged fixation element as per associated CMM/CMP. 5. At the end of the inspection, if one panel had to be readjusted: a. Perform the operational test of the manual mask release for the chemical oxygen system as per MP A350-A-35-21-XX-00ZZZ-320Z-A. 6. Report to Airbus the number of unlocked or damaged fasteners found. Notes: 1. The following tooling can be used to perform the task: a. Allen key 1/8 in to be used for locking the fasteners if needed. b. A non-metallic 2 mm filler gauge could be used to check the minimum clearance. 5. FURTHER INFORMATION 5.1 FOLLOW-UP PLAN No additional action is requested further to this one-time inspection. 6. AOT APPROVAL The technical content of this document is approved under the authority of DOA nr. EASA.21J.031. Locked ### Page 4 ALERT OPERATORS TRANSMISSION - AOT AOT ref: A35P015-19 Rev 00 Page 4 of 4 Date: 03-APR-2019 © AIRBUS S.A.S. 2019. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT 7. REPORTING Questions about this AOT are to be addressed to Airbus Customer Services through TechRequest on Airbus World, selecting Engineering Dossier, ATA 35-21 and mention “A35P015-19 Inspection results” in the title. As per latest reporting policy (Ref to OIT 999.0018/16), inspection results (with or without findings) are to be addressed to Airbus Customer Services through the generic e-mail address: inspection.results@airbus.com. Best Regards, Jean-Luc MOUYSSET VICE PRESIDENT ENGINEERING SUPPORT CUSTOMER SERVICES GOSSELIN, STEPHANE VICE PRESIDENT A350 PROGRAMME CUSTOMER SERVICES --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.