{"id":"F2008L01868","name":"AD/PA-28/30 - Engine Mount Tubes - Inspection - CANCELLED","slug":"ad-pa-28-30-engine-mount-tubes-inspection-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":74081,"registerId":"commonwealth-F2008L01868-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-28 Series Aeroplanes","sectionType":"division","heading":"Piper PA-28 Series Aeroplanes","content":"### Piper PA-28 Series Aeroplanes\n\n| AD/PA-28/30 | Engine Mount Tubes - Inspection | 7/2008 |\n| ----------- | ------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                                   |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n|              | This AD is cancelled on 3 July 2008.                                                                                                                                                                                                                                                                         |\n| Background:  | This Directive, issued in 1971, specified Piper SL No. 568 which called for periodic inspection for cracking of engine mount tubes until the engine mount was modified or replaced. As all affected aircraft would have been inspected, and, if necessary, 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-28/30","sectionType":"part","heading":"AD/PA-28/30","content":"## AD/PA-28/30","sortOrder":1},{"sectionNumber":"Engine Mount Tubes - Inspection","sectionType":"part","heading":"Engine Mount Tubes - Inspection","content":"## Engine Mount Tubes - Inspection","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":1657},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The instrument terminates the directive entirely rather than expanding its scope. The original safety mandate regarding engine mount inspections has been fulfilled across the affected fleet, warranting cancellation rather than scope modification."},"complexity_factors":["Single-page administrative cancellation notice","No operative provisions, conditions, or exceptions","No defined terms or cross-references to other legislation","Straightforward revocation without transitional arrangements or subordinate requirements"],"plain_english_summary":"This document officially cancels a 37-year-old aviation safety rule that required owners of **Piper PA-28 aircraft** to regularly inspect their engine mount tubes for cracks.\n\n**What it does:**\n- Revokes Airworthiness Directive (AD) AD/PA-28/30 effective 3 July 2008\n- Removes the legal requirement for periodic inspections specified in the original 1971 directive\n\n**Who it affects:**\n- Owners and operators of Piper PA-28 series aeroplanes (though the mandatory obligation no longer exists)\n\n**Why it matters:**\nThe original rule was created because engine mount tubes on these aircraft could develop dangerous cracks. After nearly four decades, the Civil Aviation Safety Authority determined that every affected aircraft has already been inspected and repaired or modified as needed. Since the safety risk has been resolved across the entire fleet, the mandatory inspection requirement is no longer necessary and is being cancelled to reduce unnecessary regulatory burden."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-28-30-engine-mount-tubes-inspection-cancelled","history":"/api/acts/ad-pa-28-30-engine-mount-tubes-inspection-cancelled/history","analysis":"/api/acts/ad-pa-28-30-engine-mount-tubes-inspection-cancelled/analysis","conflicts":"/api/acts/ad-pa-28-30-engine-mount-tubes-inspection-cancelled/conflicts","importantCases":"/api/acts/ad-pa-28-30-engine-mount-tubes-inspection-cancelled/important-cases","documents":"/api/acts/ad-pa-28-30-engine-mount-tubes-inspection-cancelled/documents"}}