{"id":"F2006B11430","name":"AD/OXY/2 - Scott Oxygen Mask Filter Retention - Modification","slug":"ad-oxy-2-scott-oxygen-mask-filter-retention-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":57357,"registerId":"commonwealth-F2006B11430-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/OXY/2 - Scott Oxygen Mask Filter Retention - Modification","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Oxygen Systems\n\n \n\nAD/OXY/2  Scott Oxygen Mask Filter Retention - Modification NK Applicability:              Sky masks series 28314, 28315 and 28317 manufactured prior to 8 August 1977. Document:               1. Scott Installation Instruction dated October 1977; or\n\n2.    Mitsubishi Service Note 39; or\n\n \n\n3.  Piper VSP-8.\n\n \n\nCompliance: Within 100 hours time in service after 30 April 1978.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1853},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope—a targeted safety modification for specific pre-1977 oxygen mask models. No expansion into broader operational requirements or different equipment types is evident."},"complexity_factors":["Very short instrument with only three operative paragraphs","Limited applicability (three specific product series and one manufacturing date cutoff)","No defined terms or interpretation provisions","Single compliance action required","Minor complexity from needing to source and interpret external technical manufacturer documents"],"plain_english_summary":"**What this does:** Orders a mandatory safety fix for specific aircraft oxygen masks to prevent the filter from falling out during use.\n\n**Who it affects:** Aircraft owners and operators using **Scott brand oxygen masks** (models 28314, 28315, and 28317) that were manufactured **before 8 August 1977**.\n\n**What must be done:** The filter retention system must be modified by following one of these manufacturer instruction documents:\n*   Scott Installation Instruction (October 1977); or\n*   Mitsubishi Service Note 39; or  \n*   Piper VSP-8.\n\n**Deadline:** The work must be completed within **100 hours of flight time** after 30 April 1978.\n\n**Why it matters:** Ensures emergency oxygen masks work properly in an emergency—if the filter dislodges, the mask may fail to deliver oxygen when crew or passengers need it most."}},"importantCases":[],"_links":{"self":"/api/acts/ad-oxy-2-scott-oxygen-mask-filter-retention-modification","history":"/api/acts/ad-oxy-2-scott-oxygen-mask-filter-retention-modification/history","analysis":"/api/acts/ad-oxy-2-scott-oxygen-mask-filter-retention-modification/analysis","conflicts":"/api/acts/ad-oxy-2-scott-oxygen-mask-filter-retention-modification/conflicts","importantCases":"/api/acts/ad-oxy-2-scott-oxygen-mask-filter-retention-modification/important-cases","documents":"/api/acts/ad-oxy-2-scott-oxygen-mask-filter-retention-modification/documents"}}