{"id":"F2006B02337","name":"AD/AMD 10/21 - Passenger Oxygen Masks","slug":"ad-amd-10-21-passenger-oxygen-masks","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41567,"registerId":"commonwealth-F2006B02337-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AMD 10/21 - Passenger Oxygen Masks","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nAMD Falcon 10 Series Aeroplanes\n\nAD/AMD 10/21 Passenger Oxygen Masks 9/99 TX\n\nApplicability: Falcon 10 aeroplanes with Eros passenger oxygen masks Part Number (P/N) MW 37- 09, MW 37-11, MW 37-14, MW 37-18, MW 37-28, MW 37-31 and MW 37-36\n\ninstalled.\n\nNote: The passenger oxygen masks are known to have been installed on these aeroplanes as in service replacements after January 1997.\n\nRequirement: 1. Perform a functional test of the passenger oxygen masks in accordance with the applicable maintenance manual procedures and check that the P/N of the passenger oxygen mask bag is Scott P/N 289-601-235.\n\n    2. If an incorrect P/N passenger oxygen mask bag is found to be installed or the passenger oxygen mask fails the Requirement 1 functional test:\n\n    install a placard on or adjacent to the seat as follows:\n\nTHIS SEAT IS NOT TO BE OCCUPIED DURING FLIGHT WHERE PASSENGER SUPPLEMENTAL OXYGEN\n\nIS REQUIRED TO BE AVAILABLE\n\n    b. replace the discrepant passenger oxygen mask and remove the placard installed in accordance with Requirement 2.a.\n\nNote: DGAC AD 1999-269-024(B) refers.\n\nCompliance: 1. Within ten flights after the effective date of this Directive.\n\n2. a. Before further flight.\n\n2. b. Within one calendar month following the Requirement 1 inspection and functional test being carried out.\n\nThis Airworthiness Directive becomes effective on 2 August 1999.\n\nBackground: The French DGAC have advised that during functional testing of the passenger oxygen system on two Mystère Falcon 50 aeroplanes, passenger oxygen mask bags were found to have cracked at the junction between the bag and the oxygen supply hose. The faulty systems were found to be fitted with incorrect bags Scott P/N 289- 801-235.\n\nThis Directive ensures that faulty systems are detected before they are required to be used and as an interim measure prevents passenger seats with discrepant systems from being used during flights that require supplementary oxygen to be available for passengers.\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive maintains its original narrow scope — addressing a specific defective part on a specific aircraft model. There is no evidence of scope creep; it remains a targeted safety intervention based on the identified cracking defect in oxygen mask bags."},"complexity_factors":["Single, specific aircraft type (Falcon 10) and limited part numbers (7 specific P/Ns) narrow applicability","Straightforward two-step requirement: test first, then conditional action only if test fails","Clear compliance deadlines (10 flights, before further flight, one calendar month)","Minimal cross-referencing (only one reference to French DGAC AD for background)","No nested definitions or interpretation sections","Single background narrative explaining the safety rationale"],"plain_english_summary":"This Airworthiness Directive for Falcon 10 jets requires operators to inspect passenger oxygen masks fitted with certain Eros replacement bags and verify the correct Scott bag part number. If the wrong bag (prone to cracking at the hose connection) is found, the seat must be placarded immediately as unusable for flights needing supplemental oxygen and the mask replaced within one month. It affects Falcon 10 owners/operators who fitted Eros replacement masks after January 1997 and prevents in-flight oxygen failures in emergencies."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Scope aligns with the stated purpose in the directive and background: it targets Falcon 10 aeroplanes with the listed Eros mask P/Ns (including post‑1997 in‑service replacements) to detect cracked mask bags and to prevent use of affected seats when supplemental oxygen is required. The directive does not expand beyond those aircraft, parts or the specific interim seat-use restriction."},"complexity_factors":["Narrow applicability to Falcon 10 aeroplanes fitted with the listed Eros passenger oxygen mask P/Ns (Applicability).","Requires a functional test carried out to maintenance manual procedures plus verification of the mask-bag part number (Requirement 1).","Short initial compliance window — inspection within ten flights of the directive becoming effective (Compliance 1).","Immediate operational constraint if a discrepancy is found: placard the seat before further flight when supplemental oxygen would be required (Requirement 2.a; Compliance 2.a).","Replacement obligation and a defined cure period — replace the discrepant mask and remove the placard within one calendar month (Requirement 2.b; Compliance 2.b).","Operational tasks for operators: testing, part-number checks, managing placards and ensuring seats are not used on flights requiring supplemental oxygen (Requirement 2).","Logistical issues: identifying correct Scott P/N bag and sourcing replacements where incorrect or cracked bags are found (Background/Note).","Safety-critical context raises priority and potential for flight disruption, but the directive is procedurally simple (Background)."],"plain_english_summary":"This directive requires Falcon 10 operators to test specified Eros passenger oxygen masks and confirm the mask bag is Scott P/N 289‑601‑235. If a mask fails or an incorrect bag is fitted, the seat must be placarded as unusable when supplemental oxygen is required and the mask replaced (placard removed after replacement). Operators bear inspection and replacement costs; maintenance staff carry out tests and replacements. The directive says it aims to detect cracked bags found in service and prevent affected seats being used when supplemental oxygen is needed."}},"importantCases":[],"_links":{"self":"/api/acts/ad-amd-10-21-passenger-oxygen-masks","history":"/api/acts/ad-amd-10-21-passenger-oxygen-masks/history","analysis":"/api/acts/ad-amd-10-21-passenger-oxygen-masks/analysis","conflicts":"/api/acts/ad-amd-10-21-passenger-oxygen-masks/conflicts","importantCases":"/api/acts/ad-amd-10-21-passenger-oxygen-masks/important-cases","documents":"/api/acts/ad-amd-10-21-passenger-oxygen-masks/documents"}}