{"id":"F2006B05815","name":"AD/PA-32/21 - Seat Belt Attachment - Modification","slug":"ad-pa-32-21-seat-belt-attachment-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135766,"registerId":"commonwealth-F2006B05815-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-32/21 - Seat Belt Attachment - 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-32 (Cherokee Six) Series Aeroplanes\n\n \n\nAD/PA-32/21 Seat Belt Attachment - Modification 5/71\n\nApplicability: All model PA-32-260, with S/Nos. 32-04, 32-1 to 32-14, 32-16 to 32-20, 32-22 to 32-\n\n1075, 32-1111 to 32-1194, 32-1251 to 32-1283, 32-1285 to 32-1287, 32-1289, 32-\n\n1291 to 32-1295, 32-1297, 32-7100001 to 32-7100005. All models PA-32-300 and\n\nPA-32S-300 with S/Nos. 32-15, 32-21, 32-40000 to 32-40545, 32-40566 to 32-40777,\n\n32-40851 to 32-40956, 32-40959 to 32-40974, 32-7140001 to 32-7140008,\n\n3207140011, 32-7140012.\n\n \n\nDocument: Piper SB No. 329A.\n\n \n\nCompliance: Within 100 hours time in service after 31 May 1971.\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":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive focused specifically on seat belt attachment modifications for particular Piper aircraft models. It has not expanded beyond its original purpose of addressing a specific airworthiness concern."},"complexity_factors":["Very short document (approximately 200 words)","Only 4 defined elements: applicability (serial numbers), reference document (Piper SB 329A), compliance deadline, and regulatory basis","No cross-references to other legislation beyond the general Civil Aviation Regulations 1998","Simple conditional logic: if you own one of these specific planes, you must do this specific thing by this specific time","No nested exceptions or complex procedural requirements","Straightforward applicability determined by serial number lookup"],"plain_english_summary":"**What this is:** This is an Airworthiness Directive (AD) issued by Australia's Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998. An Airworthiness Directive is a mandatory safety notice that requires aircraft owners or operators to fix a specific safety problem.\n\n**What it does:** This directive orders modifications to the seat belt attachments on specific Piper PA-32 series aeroplanes (Cherokee Six models). The affected aircraft are identified by their serial numbers — essentially a list of specific planes that need this fix.\n\n**Who it affects:** Owners and operators of:\n- PA-32-260 model planes with specific serial numbers (ranging from early production 32-04 through to 32-7100005)\n- PA-32-300 and PA-32S-300 model planes with specific serial numbers (ranging from 32-15 through to 32-7140012)\n\n**What must be done:** The aircraft must be modified according to Piper Service Bulletin No. 329A (a technical instruction from the manufacturer).\n\n**When it must be done:** Within 100 hours of flying time after 31 May 1971.\n\n**Why it matters:** Seat belt attachments are critical safety equipment. This directive ensures that potentially faulty or inadequate seat belt mountings are corrected to protect passengers and crew during turbulence or accidents."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The supplied AD sets a clear, limited scope: specific PA-32 models and serial numbers are listed (Applicability), the technical action is referenced to Piper SB No. 329A (Document), and a single compliance deadline is specified (Compliance). The text contains no language indicating an expansion or narrowing of scope from an earlier instrument, and no amendments or exceptions are included in the supplied text, so there is no evidence here that the scope has changed from an original intent."},"complexity_factors":["Long, specific list of affected serial numbers increases identification effort for owners/operators (Applicability section).","Mandated compliance tied to an external document (Piper SB No. 329A) requires cross-referencing to obtain procedural detail (Document section).","A short, fixed compliance window (100 hours TIS after 31 May 1971) creates operational scheduling constraints (Compliance section).","AD text supplied contains no detail on costs, alternative methods, or enforcement, requiring reliance on other documents or regulatory practice to fully implement.","Historical date and vintage of directive may complicate traceability of affected airframes and records."],"plain_english_summary":"The Civil Aviation Safety Authority mandates a modification to seat belt attachments on specified Piper PA-32 (Cherokee Six) aeroplanes, to be carried out per Piper Service Bulletin No. 329A. Owners/operators of the listed serial-numbered aircraft must complete the work within 100 hours time-in-service after 31 May 1971. The AD names affected serial numbers but does not state costs, alternative methods, or enforcement details."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-32-21-seat-belt-attachment-modification","history":"/api/acts/ad-pa-32-21-seat-belt-attachment-modification/history","analysis":"/api/acts/ad-pa-32-21-seat-belt-attachment-modification/analysis","conflicts":"/api/acts/ad-pa-32-21-seat-belt-attachment-modification/conflicts","importantCases":"/api/acts/ad-pa-32-21-seat-belt-attachment-modification/important-cases","documents":"/api/acts/ad-pa-32-21-seat-belt-attachment-modification/documents"}}