{"id":"F2006B05776","name":"AD/PA-31/71 Amdt 1 - Forward Baggage Door Locking System - Inspection and Modification","slug":"ad-pa-31-71-amdt-1-forward-baggage-door-locking-system-inspection-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135641,"registerId":"commonwealth-F2006B05776-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-31/71 Amdt 1 - Forward Baggage Door Locking System - Inspection and 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 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Piper PA-31 Series Aeroplanes\n\n \n\nAD/PA-31/71\n\nAmdt 1\n\n\nForward Baggage Door Locking System - Inspection and Modification\n\n\n8/79\n\n \n\nApplicability: All models PA-31, PA-31-300 and PA-31-325 with S/Nos. 31-1 to 31-7912032; All model PA-31-350 with S/Nos. 31-5001 to 31-7952053; All model PA-31P with S/Nos. 31P-1 to 31P-7730012; All model PA-31T with S/Nos. 31T-7400002 to 31T- 7920028; All model PA-31T1 with S/Nos. 31T-7804001 to 31T-7904009.\n\n \n\nDocument: Piper SB No. 604A.\n\n \n\nNote: Aeroplanes which have been modified to SB No. 604 do not meet the requirements of SB No. 604A.\n\n \n\nCompliance: Within 100 hours time in service after 31 August 1979.\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":1534},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"As Amendment 1, this appears to update technical requirements (likely upgrading from SB 604 to SB 604A) while maintaining the original scope of baggage door locking system safety for Piper PA-31 aircraft. No expansion beyond the original safety purpose is evident."},"complexity_factors":["Specific serial number ranges across seven aircraft model variants","Reference to external technical document (Piper Service Bulletin 604A) without reproducing its content","Distinction between superseded technical standard (SB 604) and current standard (SB 604A)","Compliance measured in flight hours ('time in service') rather than calendar date"],"plain_english_summary":"This AD mandates owners/operators of listed Piper PA-31 series aircraft to inspect and upgrade the forward baggage door locking system per Piper Service Bulletin No. 604A (previous SB No. 604 is not compliant). Work must be done within 100 flight hours after August 31, 1979. The action prevents in-flight baggage door opening that could damage the airplane or create a safety hazard."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-31-71-amdt-1-forward-baggage-door-locking-system-inspection-and-modification","history":"/api/acts/ad-pa-31-71-amdt-1-forward-baggage-door-locking-system-inspection-and-modification/history","analysis":"/api/acts/ad-pa-31-71-amdt-1-forward-baggage-door-locking-system-inspection-and-modification/analysis","conflicts":"/api/acts/ad-pa-31-71-amdt-1-forward-baggage-door-locking-system-inspection-and-modification/conflicts","importantCases":"/api/acts/ad-pa-31-71-amdt-1-forward-baggage-door-locking-system-inspection-and-modification/important-cases","documents":"/api/acts/ad-pa-31-71-amdt-1-forward-baggage-door-locking-system-inspection-and-modification/documents"}}