{"id":"F2006B07935","name":"Airworthiness Directives 2004 - Revocation and Remaking - Oxygen Systems","slug":"airworthiness-directives-2004-revocation-and-remaking-oxygen-systems","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50994,"registerId":"commonwealth-F2006B07935-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"Airworthiness Directives 2004 - Revocation and Remaking - Oxygen Systems","content":"Airworthiness Directives 2004\n\nI, DAVID ALAN VILLIERS, delegate of the Civil Aviation Safety\n\nAuthority, acting under subregulation 39.001 (1) of the Civil\n\nAviation Safety Regulations 1998:\n\n(a) revoke the Airworthiness Directives mentioned in\n\nSchedule 1; and\n\n(b) make, as separate instruments, each Airworthiness\n\nDirective mentioned in Schedule 1 and attached.\n\n![](image.001.png)\n\nDavid Villiers\n\nDelegate of the Civil Aviation Safety Authority\n\n20 December 2004\n\nNote: Each attached Airworthiness Directive is being re-made in exactly the\n\nsame form as appears in the latest published edition of the Directive.\n\n  \nSchedule 1 Revocation and Remaking of\n\nAirworthiness Directives\n\nOxygen Systems\n\nAD Name AD Number\n\nMask Rebreather Bag Security - Inspection and Modification AD/OXY/1\n\nScott Oxygen Mask Filter Retention - Modification AD/OXY/2\n\nPuritan-Bennett Oxygen Regulator Diaphragm - Replacement AD/OXY/3 Amdt 1\n\nScott Aviation Oxygen Cylinders - Recharge - CANCELLED AD/OXY/4\n\nScott Oxygen Mask Connectors AD/OXY/5\n\nPassenger Oxygen Masks AD/OXY/6\n\nEros Oxygen Masks AD/OXY/7\n\nEros Full Face Oxygen Masks AD/OXY/8\n\nDu Pont Pels Crewmember Protective Breathing Equipment AD/OXY/9\n\nEros Full Face Oxygen Masks AD/OXY/10 Amdt 1\n\nScott Aviation Oxygen Mask Plug-In Connectors PN 289-57 AD/OXY/11\n\nPELS Model 4566M37B Crewmember Protective Breathing Equipment AD/OXY/12\n\nPuritan Bennett ro Systems Crewmember Protective Breathing Equipment AD/OXY/13\n\nPuritan Bennett ro Systems Sweep-On Model 200 Crew Oxygen Masks AD/OXY/14\n\nPuritan Bennett Oxygen Masks Withdrawal From Service AD/OXY/15\n\nPuritan-Bennett Oxygen Mask AD/OXY/16\n\nSmoke Hood Inspection AD/OXY/17\n\nPassenger Emergency Oxygen Generators AD/OXY/18\n\nPuritan-Bennett Oxygen Masks AD/OXY/19","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument's mechanical effect is to revoke the listed oxygen-system ADs and remake them as separate instruments without substantive change: the Note states each attached AD is re-made in exactly the same form as the latest published edition. The Schedule shows multiple ADs (some with amendments) and one marked CANCELLED (AD/OXY/4), but overall the instrument does not broaden or narrow the AD requirements beyond reproducing the existing directives."},"complexity_factors":["Primary action is procedural: revocation and re-issuing of existing ADs rather than creating new technical rules.","Authority is a single delegated power (subregulation 39.001(1)), keeping legal basis straightforward.","Schedule lists multiple ADs (including amendments and a cancelled item), requiring administrative tracking.","Each AD is remade in the same form as the latest published edition, reducing substantive legal complexity but preserving operational obligations.","Operational complexity falls on operators/maintainers to implement diverse technical actions described in the attached ADs.","Potential administrative burden for CASA and regulated parties to manage separate instruments and ensure up-to-date compliance records."],"plain_english_summary":"This instrument revokes a list of Airworthiness Directives (ADs) relating to aircraft oxygen systems and remakes each listed AD as a separate instrument under subregulation 39.001(1). It reproduces the latest published ADs in the same form. Affected parties — aircraft operators, maintenance organisations and equipment owners — must follow the re-made directives (inspections, modifications, replacements) and therefore bear any compliance costs. The CASA delegate issues the instruments and sets compliance deadlines and technical actions in the attached directives."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The document explicitly states it is re-making the directives 'in exactly the same form' as before. This is a pure re-enactment with no expansion of scope."},"complexity_factors":["Very short document (under 500 words)","Only 1 defined term implicitly used ('Airworthiness Directive')","No cross-references to other legislation beyond a single regulation citation (subregulation 39.001(1))","Simple binary structure: revoke old, make new","No conditional logic or exceptions","Tabular schedule is purely descriptive, not operative","Single operative clause with straightforward (a) and (b) structure"],"plain_english_summary":"CASA revokes and reissues 19 airworthiness directives on aircraft oxygen systems, remaking them unchanged as new legal instruments. \n\nThis affects aircraft owners/operators using specified oxygen equipment (e.g., Scott, Puritan‑Bennett, Eros, Du Pont Pels) and maintenance engineers. It’s a housekeeping measure that preserves the same mandatory safety requirements, inspections and obligations in an updated legal format."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-oxygen-systems","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-oxygen-systems/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-oxygen-systems/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-oxygen-systems/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-oxygen-systems/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-oxygen-systems/documents"}}