{"id":"F2009L00874","name":"AD/PA-42/15 - Engine Mount Tubes and Barrel Nuts - CANCELLED","slug":"ad-pa-42-15-engine-mount-tubes-and-barrel-nuts-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":78137,"registerId":"commonwealth-F2009L00874-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Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-42 (Cheyenne III) Series Aeropl","sectionType":"division","heading":"Piper PA-42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-42/15 | Engine Mount Tubes and Barrel Nuts | 4/2009 |\n| ----------- | ---------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                              |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 9 April 2009.                                                                                                                                                                                                                                                                   |\n| Background:  | This unique Australian AD specified inspection of engine mount tubes and once-only replacement of barrel nuts in accordance with Piper SB No. 873 Part I. SB No. 873 specifies compliance at the next maintenance release inspection, or within 25 hours time in service. 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-42/15","sectionType":"part","heading":"AD/PA-42/15","content":"## AD/PA-42/15","sortOrder":1},{"sectionNumber":"Engine Mount Tubes and Barrel Nuts","sectionType":"part","heading":"Engine Mount Tubes and Barrel Nuts","content":"## Engine Mount Tubes and Barrel Nuts","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":2472},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument is explicitly a cancellation notice; its sole purpose is to revoke the previous Airworthiness Directive, which it accomplishes without expanding or altering its intended scope."},"complexity_factors":["Single operative provision (cancellation of previous directive)","No defined terms or interpretation section","Minimal cross-referencing (only to previous AD and service bulletin)","No conditional logic, exceptions, or procedural steps","Extremely short length (administrative notice)"],"plain_english_summary":"**What this does:**\nThis document cancels a previous Australian Airworthiness Directive (AD/PA-42/15) that applied to **Piper PA-42 Cheyenne III aircraft**. The original directive required owners and operators to inspect engine mount tubes and replace barrel nuts according to Piper Service Bulletin No. 873.\n\n**Who it affects:**\nOwners and operators of Piper PA-42 (Cheyenne III) series aeroplanes.\n\n**Why it matters:**\nAs of 9 April 2009, the inspection and replacement requirements are **no longer mandatory**. This means affected aircraft no longer need to comply with the specific maintenance actions outlined in the previous directive, effectively removing a regulatory burden because the safety requirement was deemed unnecessary."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-42-15-engine-mount-tubes-and-barrel-nuts-cancelled","history":"/api/acts/ad-pa-42-15-engine-mount-tubes-and-barrel-nuts-cancelled/history","analysis":"/api/acts/ad-pa-42-15-engine-mount-tubes-and-barrel-nuts-cancelled/analysis","conflicts":"/api/acts/ad-pa-42-15-engine-mount-tubes-and-barrel-nuts-cancelled/conflicts","importantCases":"/api/acts/ad-pa-42-15-engine-mount-tubes-and-barrel-nuts-cancelled/important-cases","documents":"/api/acts/ad-pa-42-15-engine-mount-tubes-and-barrel-nuts-cancelled/documents"}}