{"id":"F2008L02490","name":"AD/PA-31/10 - Stall Strip - Inspection - CANCELLED","slug":"ad-pa-31-10-stall-strip-inspection-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":74441,"registerId":"commonwealth-F2008L02490-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-31 Series Aeroplanes","sectionType":"division","heading":"Piper PA-31 Series Aeroplanes","content":"### Piper PA-31 Series Aeroplanes\n\n| AD/PA-31/10 | Stall Strip - Inspection | 8/2008 |\n| ----------- | ------------------------ | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                     |\n| ------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 31 July 2008.                                                                                                                                                                                                                          |\n| Background:  | This unique Australian AD required once-only inspection of wing leading edge stall strips in accordance with Piper SB No. 304. The AD required compliance within 100 hours TIS after February 1970 so all affected aircraft would have been modified long ago. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n13 June 2008","sortOrder":0},{"sectionNumber":"AD/PA-31/10","sectionType":"part","heading":"AD/PA-31/10","content":"## AD/PA-31/10","sortOrder":1},{"sectionNumber":"Stall Strip - Inspection","sectionType":"part","heading":"Stall Strip - Inspection","content":"## Stall Strip - Inspection","sortOrder":2},{"sectionNumber":"8/2008","sectionType":"part","heading":"8/2008","content":"## 8/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2599},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument terminates the scope of the original AD rather than expanding it. The original requirement for stall strip inspections is completely cancelled as obsolete."},"complexity_factors":["Single operative provision (cancellation)","No defined terms or interpretation section","No conditional logic, exceptions, or cross-references to other legislation","Background explanatory note is historical context only, not operative"],"plain_english_summary":"This document **cancels an outdated aircraft safety rule** that is no longer needed.\n\n**What the old rule required**\nOriginally, Airworthiness Directive AD/PA-31/10 (issued in 1970) required owners of Piper PA-31 series aircraft to perform a one-time inspection of the **stall strips** — small metal pieces on the wing's leading edge that help control airflow and prevent dangerous stalls. The inspection had to be completed within 100 flight hours after February 1970.\n\n**What this document does**\nBecause the compliance deadline passed nearly 40 years ago, all affected aircraft would have already completed the inspection. This instrument formally **cancels** the old directive effective 31 July 2008, simply removing the obsolete requirement from the books.\n\n**Who it affects**\nOwners and operators of Piper PA-31 series aircraft, though no action is required since the original inspection deadline passed decades earlier."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-31-10-stall-strip-inspection-cancelled","history":"/api/acts/ad-pa-31-10-stall-strip-inspection-cancelled/history","analysis":"/api/acts/ad-pa-31-10-stall-strip-inspection-cancelled/analysis","conflicts":"/api/acts/ad-pa-31-10-stall-strip-inspection-cancelled/conflicts","importantCases":"/api/acts/ad-pa-31-10-stall-strip-inspection-cancelled/important-cases","documents":"/api/acts/ad-pa-31-10-stall-strip-inspection-cancelled/documents"}}