{"id":"F2008L03439","name":"AD/PA-32/20 - Seat Frame - Modification - CANCELLED","slug":"ad-pa-32-20-seat-frame-modification-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":120476,"registerId":"commonwealth-F2008L03439-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-32 (Cherokee Six) Series Aeropl","sectionType":"division","heading":"Piper PA-32 (Cherokee Six) Series Aeroplanes","content":"### Piper PA-32 (Cherokee Six) Series Aeroplanes\n\n| AD/PA-32/20 | Seat Frame - Modification | 10/2008 |\n| ----------- | ------------------------- | ------- |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                            |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 25 September 2008.                                                                                                                                                                                            |\n| Background:  | This unique Australian AD specified once-only modification of vertically adjustable seats in accordance with Piper SB No. 337. Compliance was required within 100 hours time in service after May 1971. The AD is no longer required. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n12 August 2008","sortOrder":0},{"sectionNumber":"AD/PA-32/20","sectionType":"part","heading":"AD/PA-32/20","content":"## AD/PA-32/20","sortOrder":1},{"sectionNumber":"Seat Frame - Modification","sectionType":"part","heading":"Seat Frame - Modification","content":"## Seat Frame - Modification","sortOrder":2},{"sectionNumber":"10/2008","sectionType":"part","heading":"10/2008","content":"## 10/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":3116},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument performs exactly one function: cancelling the previous directive. It has not expanded beyond its original purpose."},"complexity_factors":["Single operative provision (cancellation)","No defined terms or interpretation section","No conditional logic, exceptions, or triggers","Extremely short length (under 200 words)"],"plain_english_summary":"**What this does:** This instrument cancels Airworthiness Directive AD/PA-32/20, which previously required owners of **Piper PA-32 (Cherokee Six)** aircraft to modify their seat frames.\n\n**Who is affected:** Owners and operators of these specific aircraft types.\n\n**The practical effect:** You no longer need to comply with the 1971 requirement to adjust vertically adjustable seats per Piper Service Bulletin No. 337 within 100 flight hours. The cancellation took effect on **25 September 2008**.\n\n**Why it matters:** After 37 years, the safety risk addressed by the original modification was deemed no longer significant enough to warrant mandatory compliance."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-32-20-seat-frame-modification-cancelled","history":"/api/acts/ad-pa-32-20-seat-frame-modification-cancelled/history","analysis":"/api/acts/ad-pa-32-20-seat-frame-modification-cancelled/analysis","conflicts":"/api/acts/ad-pa-32-20-seat-frame-modification-cancelled/conflicts","importantCases":"/api/acts/ad-pa-32-20-seat-frame-modification-cancelled/important-cases","documents":"/api/acts/ad-pa-32-20-seat-frame-modification-cancelled/documents"}}