{"id":"F2006B11425","name":"AD/OXY/14 - Puritan Bennett Aero Systems Sweep-On Model 200 Crew Oxygen Masks","slug":"ad-oxy-14-puritan-bennett-aero-systems-sweep-on-model-200-crew-oxygen-masks","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":57347,"registerId":"commonwealth-F2006B11425-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/OXY/14 - Puritan Bennett Aero Systems Sweep-On Model 200 Crew Oxygen Masks","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 107 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nOxygen Systems\n\nAD/OXY/14 Puritan Bennett Aero Systems Sweep-On\n\nModel 200 Crew Oxygen Masks\n\n  \n13/94 DM\n\nApplicability: Puritan Bennett Aero Systems Sweep-On Model 2000 crew oxygen masks, part number series and serial number range indicated below, that do not have a tamper seal:\n\n174250-Series 00001 to 00005 inclusive\n\n174252-Series 00001 to 00112 inclusive\n\n174260-Series 00001 to 00236 inclusive\n\n174262-Series 00001 to 00015 inclusive\n\nNote: These oxygen masks are known to be installed in, but not limited to the following aircraft series:\n\nBeech Model 400\n\nCessna Model 500, 501, 550, S550, 551 and 650 Dassault Mystere Falcon Model 20\n\nDornier Model 228 and 328\n\nGulfstream Model G-1159 (G-II) and G-1159A (G-III) Raytheon Corporate Jets Model HS 125-700\n\nRequirement: Action in accordance with Puritan Bennett Aero Systems Service Bulletin 174250-35- 1 dated August 1994.\n\nNote: FAA AD 94-19-06 Amdt 39-9028 refers.\n\nCompliance: Prior to 31 December 1994.\n\nBackground: The FAA has received several reports of difficulty in exhaling into Sweep-On 2000 oxygen masks due to misalignment of the demand diaphragm. Compliance with this Directive will ensure that the demand diaphragm is properly aligned in the mask, allowing correct operation of the exhalation valve.","sortOrder":0}],"analysis":{"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 is a discrete, targeted safety directive addressing a specific mechanical defect in specific oxygen masks. It has not expanded beyond its original purpose of ensuring proper diaphragm alignment in the identified mask models."},"complexity_factors":["Very short document (approximately 200 words)","Only 4 defined part/serial number ranges","Single, clear compliance requirement (follow one service bulletin)","No nested exceptions or conditional logic","Straightforward applicability test (specific part numbers + absence of tamper seal)","Single compliance deadline with no alternative methods"],"plain_english_summary":"This AD mandates owners/operators of certain Beech, Cessna, Dassault, Dornier, Gulfstream, and Raytheon corporate jets to inspect and correct Puritan Bennett Aero Systems Sweep‑On Model 200 crew oxygen masks (specified part/serial numbers) that lack a tamper seal. It requires following service bulletin SB 174250‑35‑1 to realign a mispositioned demand diaphragm before 31 Dec 1994. The fix prevents pilots’ impaired breathing during depressurization and addresses a serious flight‑safety risk."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Scope not changed from the instrument's stated aim: it targets specific Sweep‑On Model 2000 masks without a tamper seal to correct demand‑diaphragm misalignment, requiring action per the manufacturer service bulletin (Applicability; Requirement; Background)."},"complexity_factors":["Technical specificity: precise part-number series and serial-number ranges defined (Applicability).","Safety-critical mechanical issue: alignment of demand diaphragm affecting exhalation valve operation (Background).","External reference: mandatory compliance requires following a manufacturer service bulletin (Requirement: Puritan Bennett Service Bulletin 174250-35-1).","Fixed compliance deadline: 'Prior to 31 December 1994' leaves little timing flexibility (Compliance).","Limited affected population but multiple aircraft types listed (Applicability — installed in several models), concentrating costs on those operators.","Low administrative discretion: directive prescribes action rather than permitting alternatives (Requirement).","Detection and remedy are physical/technical tasks requiring inspection and possible repair, creating operational downtime and direct maintenance cost to operators."],"plain_english_summary":"Requires operators to inspect and, if necessary, adjust or repair specified Puritan Bennett Sweep‑On Model 2000 crew oxygen masks (listed part/serial ranges without a tamper seal) so the demand diaphragm is correctly aligned, following Puritan Bennett Service Bulletin 174250‑35‑1. The Civil Aviation Safety Authority mandates compliance by 31 December 1994.\n\nThis affects aircraft operators using those masks (installed in listed aircraft types). Operators pay for inspection and corrective work; the directive prescribes a single corrective procedure and a firm deadline."}},"importantCases":[],"_links":{"self":"/api/acts/ad-oxy-14-puritan-bennett-aero-systems-sweep-on-model-200-crew-oxygen-masks","history":"/api/acts/ad-oxy-14-puritan-bennett-aero-systems-sweep-on-model-200-crew-oxygen-masks/history","analysis":"/api/acts/ad-oxy-14-puritan-bennett-aero-systems-sweep-on-model-200-crew-oxygen-masks/analysis","conflicts":"/api/acts/ad-oxy-14-puritan-bennett-aero-systems-sweep-on-model-200-crew-oxygen-masks/conflicts","importantCases":"/api/acts/ad-oxy-14-puritan-bennett-aero-systems-sweep-on-model-200-crew-oxygen-masks/important-cases","documents":"/api/acts/ad-oxy-14-puritan-bennett-aero-systems-sweep-on-model-200-crew-oxygen-masks/documents"}}