{"id":"F2008L01847","name":"AD/PA-23/3 - Main Landing Gear Forgings and Wheels - Replacement - CANCELLED","slug":"ad-pa-23-3-main-landing-gear-forgings-and-wheels-replacement-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":74041,"registerId":"commonwealth-F2008L01847-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-23 (Apache and Aztec) Series Ae","sectionType":"division","heading":"Piper PA-23 (Apache and Aztec) Series Aeroplanes","content":"### Piper PA-23 (Apache and Aztec) Series Aeroplanes\n\n| AD/PA-23/3 | Main Landing Gear Forgingsand Wheels - Replacement | 7/2008 |\n| ---------- | -------------------------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                           |\n| ------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 3 July 2008.                                                                                                                                                                                                                 |\n| Background:  | This Directive was based on Piper Service Bulletin No. 128 calling for once-only replacement of main landing gear wheels on 56 aircraft in the mid 1950s. As all affected aircraft would have been modified long ago, this AD is no longer required. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n7 May 2008","sortOrder":0},{"sectionNumber":"AD/PA-23/3","sectionType":"part","heading":"AD/PA-23/3","content":"## AD/PA-23/3","sortOrder":1},{"sectionNumber":"Main Landing Gear Forgingsand Wheels - R","sectionType":"part","heading":"Main Landing Gear Forgingsand Wheels - Replacement","content":"## Main Landing Gear Forgings  \nand Wheels - Replacement","sortOrder":2},{"sectionNumber":"7/2008","sectionType":"part","heading":"7/2008","content":"## 7/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1373},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":true,"description":"This instrument completely revokes the original Airworthiness Directive, eliminating the mandatory requirement for operators to replace main landing gear forgings and wheels on affected Piper PA-23 aircraft. The scope has shifted from imposing compliance obligations to removing them entirely."},"complexity_factors":["Single operative provision (cancellation)","No defined terms","No conditional logic or exceptions","No cross-references to other legislation beyond the self-reference"],"plain_english_summary":"**What this document does**\n\nThis officially cancels an old aircraft safety rule called Airworthiness Directive (AD) AD/PA-23/3.\n\n**What the old rule required**\n\nThe original directive (based on a manufacturer service bulletin from the mid-1950s) mandated a one-time replacement of main landing gear wheels on 56 specific Piper PA-23 Apache and Aztec aircraft.\n\n**Why it's being cancelled**\n\nAll affected aircraft were modified decades ago. Since the required work has been completed on every plane that needed it, the rule is now redundant.\n\n**What this means for aircraft owners**\n\nIf you operate a Piper PA-23 series aircraft, you no longer need to worry about this specific directive. The cancellation took effect on **3 July 2008**."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-23-3-main-landing-gear-forgings-and-wheels-replacement-cancelled","history":"/api/acts/ad-pa-23-3-main-landing-gear-forgings-and-wheels-replacement-cancelled/history","analysis":"/api/acts/ad-pa-23-3-main-landing-gear-forgings-and-wheels-replacement-cancelled/analysis","conflicts":"/api/acts/ad-pa-23-3-main-landing-gear-forgings-and-wheels-replacement-cancelled/conflicts","importantCases":"/api/acts/ad-pa-23-3-main-landing-gear-forgings-and-wheels-replacement-cancelled/important-cases","documents":"/api/acts/ad-pa-23-3-main-landing-gear-forgings-and-wheels-replacement-cancelled/documents"}}