{"id":"F2008L03715","name":"AD/PA-24/25 - Seat Frame - Modification - CANCELLED","slug":"ad-pa-24-25-seat-frame-modification-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":75434,"registerId":"commonwealth-F2008L03715-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-24 (Comanche) Series Aeroplanes","sectionType":"division","heading":"Piper PA-24 (Comanche) Series Aeroplanes","content":"### Piper PA-24 (Comanche) Series Aeroplanes\n\n| AD/PA-24/25 | Seat Frame - Modification | 11/2008 |\n| ----------- | ------------------------- | ------- |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                     |\n| ------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 23 October 2008.                                                                                                                                                                                                       |\n| Background:  | This unique Australian AD specified modification of vertically-adjustable pilot and co-pilot seats in accordance with Piper SB No. 336. 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\n8 September 2008","sortOrder":0},{"sectionNumber":"AD/PA-24/25","sectionType":"part","heading":"AD/PA-24/25","content":"## AD/PA-24/25","sortOrder":1},{"sectionNumber":"Seat Frame - Modification","sectionType":"part","heading":"Seat Frame - Modification","content":"## Seat Frame - Modification","sortOrder":2},{"sectionNumber":"11/2008","sectionType":"part","heading":"11/2008","content":"## 11/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2156},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This represents a routine lifecycle cancellation of a spent airworthiness directive. The regulatory obligation has terminated because the compliance deadline passed decades ago and the safety issue has been resolved across the fleet. There is no expansion of scope or purpose."},"complexity_factors":["Single operative provision (cancellation)","No defined terms or interpretation section","No conditional logic, exceptions, or procedural steps","Minimal cross-references (only to previous AD and manufacturer service bulletin)"],"plain_english_summary":"**This document cancels an old aircraft safety rule.**\n\nPreviously, owners of **Piper PA-24 Comanche** aeroplanes were required to modify the pilot and co-pilot seats to fix a problem with the vertical adjustment mechanism. The seats had to be fixed according to **Piper Service Bulletin No. 336** within 100 flight hours after May 1971.\n\nThis document officially **cancels that requirement** as of 23 October 2008 because it is no longer needed—most likely because all affected aircraft have long since been repaired or retired from service."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-24-25-seat-frame-modification-cancelled","history":"/api/acts/ad-pa-24-25-seat-frame-modification-cancelled/history","analysis":"/api/acts/ad-pa-24-25-seat-frame-modification-cancelled/analysis","conflicts":"/api/acts/ad-pa-24-25-seat-frame-modification-cancelled/conflicts","importantCases":"/api/acts/ad-pa-24-25-seat-frame-modification-cancelled/important-cases","documents":"/api/acts/ad-pa-24-25-seat-frame-modification-cancelled/documents"}}