{"id":"F2009L00872","name":"AD/PA-42/17 - Main Landing Gear Actuator Attachment Bolt - CANCELLED","slug":"ad-pa-42-17-main-landing-gear-actuator-attachment-bolt-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":78128,"registerId":"commonwealth-F2009L00872-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-42 (Cheyenne III) Series Aeropl","sectionType":"division","heading":"Piper PA-42 (Cheyenne III) Series Aeroplanes","content":"### Piper PA-42 (Cheyenne III) Series Aeroplanes\n\n| AD/PA-42/17 | Main Landing Gear Actuator Attachment Bolt | 4/2009 |\n| ----------- | ------------------------------------------ | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                                                  |\n| ------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 9 April 2009.                                                                                                                                                                                                                                                                                       |\n| Background:  | This unique Australian AD specified periodic inspection and replacement of the MLG actuator attachment bolt in accordance with Piper SB No. 885. The AD applied to PA-42-1000 only. Compliance was required at intervals not exceeding 500 hours. Use of an AD to mandate this periodic maintenance is no longer warranted. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n25 February 2009","sortOrder":0},{"sectionNumber":"AD/PA-42/17","sectionType":"part","heading":"AD/PA-42/17","content":"## AD/PA-42/17","sortOrder":1},{"sectionNumber":"Main Landing Gear Actuator Attachment Bo","sectionType":"part","heading":"Main Landing Gear Actuator Attachment Bolt","content":"## Main Landing Gear Actuator Attachment Bolt","sortOrder":2},{"sectionNumber":"4/2009","sectionType":"part","heading":"4/2009","content":"## 4/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2118},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument terminates a specific maintenance requirement without expanding regulatory scope or introducing new obligations. It simply removes a previously mandated inspection interval for one aircraft component type."},"complexity_factors":["Single operative provision (cancellation of previous directive)","No definitions or interpretation section","No cross-references to other legislation (except reference to the cancelled AD itself)","No conditional logic, exceptions, or procedural requirements"],"plain_english_summary":"**What this does**\nThis document officially cancels a previous aviation safety rule (Airworthiness Directive AD/PA-42/17) that required owners of specific Piper PA-42-1000 aircraft to periodically inspect and replace the main landing gear actuator attachment bolt every 500 flight hours.\n\n**Who it affects**\nOwners and operators of Piper PA-42-1000 (Cheyenne III) aeroplanes.\n\n**Why it matters**\nAs of 9 April 2009, the mandatory inspection and replacement requirement is no longer in force. The Civil Aviation Safety Authority determined that using a compulsory directive to enforce this particular maintenance task was no longer necessary, removing the compliance burden for operators of these aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-42-17-main-landing-gear-actuator-attachment-bolt-cancelled","history":"/api/acts/ad-pa-42-17-main-landing-gear-actuator-attachment-bolt-cancelled/history","analysis":"/api/acts/ad-pa-42-17-main-landing-gear-actuator-attachment-bolt-cancelled/analysis","conflicts":"/api/acts/ad-pa-42-17-main-landing-gear-actuator-attachment-bolt-cancelled/conflicts","importantCases":"/api/acts/ad-pa-42-17-main-landing-gear-actuator-attachment-bolt-cancelled/important-cases","documents":"/api/acts/ad-pa-42-17-main-landing-gear-actuator-attachment-bolt-cancelled/documents"}}