{"id":"F2007L01066","name":"AD/F2000/25 - Oxygen - Incompatible Passenger Mask Boxes","slug":"ad-f2000-25-oxygen-incompatible-passenger-mask-boxes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":65030,"registerId":"commonwealth-F2007L01066-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Dassault Aviation Falcon 2000 Series Aer","sectionType":"division","heading":"Dassault Aviation Falcon 2000 Series Aeroplanes","content":"### Dassault Aviation Falcon 2000 Series Aeroplanes\n\n| AD/F2000/25 | Oxygen - Incompatible Passenger Mask Boxes | 5/2007 |\n| ----------- | ------------------------------------------ | ------ |\n\n| Applicability: | Falcon 2000EX aeroplanes serial numbers (S/N) 28 through 55 inclusive, that have not implemented Dassault Aviation Service Bulletin (SB) F2000EX-61 dated 22 March 2006 or SB F2000EX-61 Revision 1 dated 22 March 2007. |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement: | Replace the passenger oxygen mask boxes in accordance with SB F2000EX-61 or later revision approved by the European Aviation Safety Agency (EASA). |\n| | Note: EASA AD 2007-0073 refers. |\n| Compliance: | No later than 30 June 2008. |\n| | This Airworthiness Directive becomes effective on 10 May 2007. |\n| Background: | On early Falcon aeroplanes featuring the EASy cockpit, a new electropneumatic oxygen (O2) controller was installed. An internal review by Dassault Aviation has determined that the passenger oxygen mask boxes are not compatible with this new controller. In OVERRIDE mode, when the internal pressure reducer is by-passed, O2 flow is nominal, while in NORMAL mode, O2 flow is reduced by half compared to what it should be.Consequently, in NORMAL mode, the minimum mass flow of supplemental O2 for each passenger, as required by Certification Specifications, is no longer met. This could lead to passengers’ incapacitation due to insufficient body oxygenation.This Directive mandates the replacement of the passenger oxygen mask boxes by new-design ones compatible with the controller. |\n\n![](image.001.png) \nCharles Lenarcic \nDelegate of the Civil Aviation Safety Authority\n\n29 March 2007","sortOrder":0},{"sectionNumber":"AD/F2000/25","sectionType":"part","heading":"AD/F2000/25","content":"## AD/F2000/25","sortOrder":1},{"sectionNumber":"Oxygen - Incompatible Passenger Mask Box","sectionType":"part","heading":"Oxygen - Incompatible Passenger Mask Boxes","content":"## Oxygen - Incompatible Passenger Mask Boxes","sortOrder":2},{"sectionNumber":"5/2007","sectionType":"part","heading":"5/2007","content":"## 5/2007","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"The directive implements a targeted retrofit aligned with its stated safety discovery: it applies only to early Falcon 2000EX aeroplanes with the new controller that have not already implemented SB F2000EX‑61 (Applicability; Requirement). It does not broaden applicability beyond those identified aircraft; it simply mandates replacement per an EASA‑approved service bulletin by the stated deadline (Compliance)."},"complexity_factors":["Narrow applicability to specific serial numbers 28–55 and exemption where SB F2000EX‑61 (or Revision 1) already implemented (Applicability).","Mandatory technical retrofit to a safety‑critical oxygen system requiring approved parts and maintenance procedures (Requirement; Background).","Obligation to follow a service bulletin approved by the European Aviation Safety Agency (EASA) — dependency on EASA‑approved revisions (Requirement).","Hard compliance deadline (30 June 2008) and AD effective date (10 May 2007) that force scheduling of maintenance and potential aircraft downtime (Compliance).","Cross‑reference to EASA AD 2007‑0073 adds parallel regulatory tracking and potential paperwork to demonstrate compliance (Background).","One‑off nature reduces ongoing regulatory complexity but concentrates logistical, parts‑supply and cost burdens on operators in a short window (Compliance; Requirement)."],"plain_english_summary":"This directive requires owners/operators of Dassault Falcon 2000EX aeroplanes S/N 28–55 (unless they’ve already fitted the listed service bulletin) to replace passenger oxygen mask boxes with an EASA‑approved new design. It fixes an incompatibility with a new electropneumatic oxygen controller that cuts oxygen flow in NORMAL mode. Operators must arrange the retrofit and any parts, maintenance and paperwork by 30 June 2008, so aircraft meet certification flow requirements."},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope: addressing a specific hardware incompatibility in a limited production run of Falcon 2000EX aircraft. The document shows no evidence of scope creep — it targets exactly the safety defect identified (oxygen mask box incompatibility) and mandates exactly the fix required (replacement per specified service bulletin)."},"complexity_factors":["Very short document (approximately 250 words of substantive content)","Only 4 defined elements: specific aircraft serial number range, two service bulletin references, and one external regulatory reference (EASA AD 2007-0073)","Single, unambiguous compliance action with clear deadline","No nested exceptions or conditional logic — applicability is a simple binary test (serial numbers 28–55, minus aircraft already fixed)","No cross-references to other legislation or complex procedural requirements","Background explanation is technical but the legal obligation is plain"],"plain_english_summary":"This CASA Airworthiness Directive requires owners/operators of Dassault Falcon 2000EX jets (S/N 28–55) to replace passenger oxygen mask boxes because they deliver only half the required flow with a newer oxygen controller. Unless already corrected per Dassault Service Bulletin (EASA-approved), the hardware swap must be done by 30 June 2008 to prevent passenger hypoxia in cabin depressurisation."}},"importantCases":[],"_links":{"self":"/api/acts/ad-f2000-25-oxygen-incompatible-passenger-mask-boxes","history":"/api/acts/ad-f2000-25-oxygen-incompatible-passenger-mask-boxes/history","analysis":"/api/acts/ad-f2000-25-oxygen-incompatible-passenger-mask-boxes/analysis","conflicts":"/api/acts/ad-f2000-25-oxygen-incompatible-passenger-mask-boxes/conflicts","importantCases":"/api/acts/ad-f2000-25-oxygen-incompatible-passenger-mask-boxes/important-cases","documents":"/api/acts/ad-f2000-25-oxygen-incompatible-passenger-mask-boxes/documents"}}