{"id":"F2006L03553","name":"AD/AMD 50/39 - Third Crew Member Oxygen Box","slug":"ad-amd-50-39-third-crew-member-oxygen-box","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":61096,"registerId":"commonwealth-F2006L03553-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AMD Falcon 50 and 900 Series Aeroplanes","sectionType":"division","heading":"AMD Falcon 50 and 900 Series Aeroplanes","content":"### AMD Falcon 50 and 900 Series Aeroplanes\n\n| AD/AMD 50/39 | Third Crew Member Oxygen Box | 13/2006 DM |\n| ------------ | ---------------------------- | ---------- |\n\n| Applicability: | Mystere Falcon 900 airplanes, ranging from serial number (S/N) 1 to S/N 202 inclusive, without modification M5213 or M5236 and equipped with a 3rd crew member passenger-type oxygen mask on the cockpit ceiling.Falcon 900EX airplanes, ranging from S/N 1 to S/N 156 inclusive, without modification M5213 or M5236 and equipped with a 3rd crew member passenger-type oxygen mask on the cockpit ceiling. |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n| Requirement:   | 1. Carry out a detailed inspection for chaffing and any other damage, together with any necessary corrective actions, of the electrical feeder cables located in the cockpit behind the third crew member O2 box.                                                                                                                                                                                            |\n|                | 2. Modify the routing and the protection of the electrical feeder cables located in the cockpit behind the third crew member O2 box in accordance with Dassault Aviation Service Bulletin (SB) F900-366 or F900EX-277, as appropriate, or later approved revisions.                                                                                                                                          |\n|                | Note 1: SBs F900-366 or F900EX-277 cover the Dassault Aviation modification M5213.                                                                                                                                                                                                                                                                                                                           |\n|                | Note 2: EASA Emergency AD 2006-0330-E refers.                                                                                                                                                                                                                                                                                                                                                                |\n| Compliance:    | For Requirements 1 and 2 - Within one calendar month or 30 flights, whichever occurs first, after the effective date of this Directive.                                                                                                                                                                                                                                                                      |\n|                | This Airworthiness Directive becomes effective on 31 October 2006.                                                                                                                                                                                                                                                                                                                                           |\n| Background:    | The European Aviation Safety Agency (EASA) has advised that a drawing review and further associated inspections on aircraft have highlighted a potential chafing risk between the third crew member oxygen mask box, optionally installed in the cockpit ceiling, and electrical feeder cables routed in the area.                                                                                           |\n\n|     | This situation, if not corrected, could generate smoke or fire, which could be fanned by oxygen leakage from the box. |\n| --- | --------------------------------------------------------------------------------------------------------------------- |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n30 October 2006","sortOrder":0},{"sectionNumber":"AD/AMD 50/39","sectionType":"part","heading":"AD/AMD 50/39","content":"## AD/AMD 50/39","sortOrder":1},{"sectionNumber":"Third Crew Member Oxygen Box","sectionType":"part","heading":"Third Crew Member Oxygen Box","content":"## Third Crew Member Oxygen Box","sortOrder":2},{"sectionNumber":"13/2006 DM","sectionType":"part","heading":"13/2006 DM","content":"## 13/2006 DM","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD does not expand scope beyond addressing the identified chafing risk. It targets specific Falcon 900/900EX serial-number ranges without modifications M5213 or M5236 and only where a third‑crew passenger‑type oxygen mask is installed (Applicability), and mandates inspection and modification per Dassault SBs (Requirement), consistent with the EASA emergency AD reference (Note 2 and Background)."},"complexity_factors":["Narrow, technical applicability defined by model, serial-number ranges, mod exclusions and equipment fit (Applicability).","Requires detailed physical inspection and any corrective actions to electrical feeder cables (Requirement 1) — operationally straightforward but technically specific.","Mandates modification of cable routing/protection per Dassault Service Bulletins F900-366 or F900EX-277 (Requirement 2), creating dependency on manufacturer SBs and potential parts/labour.","Short compliance window: one calendar month or 30 flights (Compliance) increases operational scheduling pressure and potential cost concentration.","Cross-reference to EASA Emergency AD 2006-0330-E and manufacturer modification mapping (Notes 1 and 2) introduces regulatory alignment and documentary checks.","Administrative task of determining whether aircraft already have mods M5213 or M5236 (Applicability) adds record-checking complexity.","Allowing 'later approved revisions' of SBs introduces limited discretion around which revisions satisfy the AD (Requirement 2)."],"plain_english_summary":"This directive requires operators of specified Mystere Falcon 900 and 900EX aeroplanes (given serial-number ranges, excluding aircraft with modifications M5213 or M5236 and fitted with a third‑crew passenger‑type oxygen mask) to inspect electrical feeder cables behind the third‑crew oxygen box for chafing and to re‑route and protect them per Dassault Service Bulletin. Compliance must occur within one calendar month or 30 flights because chafing could cause smoke or fire, which oxygen leakage from the box may intensify."},"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"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific mechanical issue on specific aircraft models. It has not expanded beyond its original purpose of mandating inspection and modification of wiring near the third crew member oxygen box."},"complexity_factors":["Very short document (approximately 300 words)","Only 2 substantive requirements (inspection and modification)","Limited applicability defined by specific aircraft serial number ranges and equipment configuration","Single cross-reference to European Aviation Safety Agency Emergency AD 2006-0330-E","No nested exceptions or conditional logic beyond the applicability criteria","Clear compliance deadline with simple alternative trigger (calendar month OR flight hours)","Minimal defined terms — only standard aviation abbreviations (S/N, SB, EASA, AD)"],"plain_english_summary":"This AD mandates inspection and corrective action on certain Dassault Falcon 900 and 900EX jets that have a third-crew oxygen mask box installed on the cockpit ceiling. Regulators found electrical cables can chafe against the box, risking wire damage, ignition, and a rapidly spreading fire if oxygen leaks.\n\nAffected operators (Falcon 900 S/N 1–202; 900EX S/N 1–156 without factory fix M5213/M5236) must inspect and reroute/protect the wiring per Dassault service instructions within one month or 30 flights after 31 Oct 2006."}},"importantCases":[],"_links":{"self":"/api/acts/ad-amd-50-39-third-crew-member-oxygen-box","history":"/api/acts/ad-amd-50-39-third-crew-member-oxygen-box/history","analysis":"/api/acts/ad-amd-50-39-third-crew-member-oxygen-box/analysis","conflicts":"/api/acts/ad-amd-50-39-third-crew-member-oxygen-box/conflicts","importantCases":"/api/acts/ad-amd-50-39-third-crew-member-oxygen-box/important-cases","documents":"/api/acts/ad-amd-50-39-third-crew-member-oxygen-box/documents"}}