{"id":"F2009L00880","name":"AD/PA-42/4 Amdt 1 - Main Landing Gear Pivot Shaft Assembly Bolts - CANCELLED","slug":"ad-pa-42-4-amdt-1-main-landing-gear-pivot-shaft-assembly-bolts-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":78160,"registerId":"commonwealth-F2009L00880-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Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-42 (Cheyenne III) Series Aeropl","sectionType":"division","heading":"Piper PA-42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-42/4 Amdt 1 | Main Landing Gear PivotShaft Assembly Bolts | 4/2009 |\n| ----------------- | ------------------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                          |\n| ------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 9 April 2009.                                                                                                                                                                                                                                                               |\n| Background:  | This unique Australian AD specified action on the main landing gear pivot shaft assembly bolts in accordance with Piper SB No. 768A within 100 hours time in service, or at the next inspection for maintenance release issue, after August 1985, whichever is later. The AD is no longer required. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n25 February 2009","sortOrder":0},{"sectionNumber":"AD/PA-42/4 Amdt 1","sectionType":"part","heading":"AD/PA-42/4 Amdt 1","content":"## AD/PA-42/4 Amdt 1","sortOrder":1},{"sectionNumber":"Main Landing Gear PivotShaft Assembly Bo","sectionType":"part","heading":"Main Landing Gear PivotShaft Assembly Bolts","content":"## Main Landing Gear Pivot  \nShaft Assembly Bolts","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":2698},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The amendment terminates the original airworthiness directive entirely rather than expanding its scope. The original safety requirements regarding bolt inspections have been eliminated rather than modified or extended."},"complexity_factors":["Single operative clause cancelling the directive","No defined terms or interpretation sections","No conditional logic, exceptions, or cross-references to other legislation","Document contains fewer than 150 words of substantive text"],"plain_english_summary":"This instrument cancels a previous aviation safety rule affecting specific aircraft.\n\n**What it does**\nThis document officially cancels Airworthiness Directive (AD) AD/PA-42/4. That directive previously required owners and operators of Piper PA-42 Cheyenne III aircraft to inspect or replace the main landing gear pivot shaft assembly bolts within a specified timeframe.\n\n**Who it affects**\nOwners and operators of Piper PA-42 Cheyenne III series aeroplanes.\n\n**Why it matters**\nThe cancellation removes the mandatory inspection requirement for these specific landing gear bolts. This typically occurs when the safety risk has been addressed through other means—such as manufacturer service bulletins, fleet modifications, or the issue being covered by a different safety directive—meaning the original rule is no longer necessary."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-42-4-amdt-1-main-landing-gear-pivot-shaft-assembly-bolts-cancelled","history":"/api/acts/ad-pa-42-4-amdt-1-main-landing-gear-pivot-shaft-assembly-bolts-cancelled/history","analysis":"/api/acts/ad-pa-42-4-amdt-1-main-landing-gear-pivot-shaft-assembly-bolts-cancelled/analysis","conflicts":"/api/acts/ad-pa-42-4-amdt-1-main-landing-gear-pivot-shaft-assembly-bolts-cancelled/conflicts","importantCases":"/api/acts/ad-pa-42-4-amdt-1-main-landing-gear-pivot-shaft-assembly-bolts-cancelled/important-cases","documents":"/api/acts/ad-pa-42-4-amdt-1-main-landing-gear-pivot-shaft-assembly-bolts-cancelled/documents"}}