{"id":"F2009L00881","name":"AD/PA-42/3 - Tail Fin/Fuselage, Rivet Installation - Replacement - CANCELLED","slug":"ad-pa-42-3-tail-fin-fuselage-rivet-installation-replacement-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":78163,"registerId":"commonwealth-F2009L00881-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Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-42 (Cheyenne III) Series Aeropl","sectionType":"division","heading":"Piper PA-42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-42/3 | Tail Fin/Fuselage,Rivet Installation - Replacement | 4/2009 |\n| ---------- | -------------------------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                          |\n| ------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 9 April 2009.                                                                                                                                                                                               |\n| Background:  | This unique Australian AD specified replacement of rivets at the intersection of the tail fin and fuselage in accordance with Piper SB No. 765 within 100 hours time in service after September 1983. 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-42/3","sectionType":"part","heading":"AD/PA-42/3","content":"## AD/PA-42/3","sortOrder":1},{"sectionNumber":"Tail Fin/Fuselage,Rivet Installation - R","sectionType":"part","heading":"Tail Fin/Fuselage,Rivet Installation - Replacement","content":"## Tail Fin/Fuselage,  \nRivet Installation - Replacement","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":1632},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument serves solely to cancel the previous Airworthiness Directive. It does not expand the scope, add new requirements, or broaden applicability beyond the original aircraft type. The effect is purely subtractive—removing obligations rather than creating new ones."},"complexity_factors":["Single operative provision consisting of one sentence cancelling the previous instrument","No defined terms, interpretation section, or regulatory cross-references","No conditional logic, exceptions, or procedural steps to follow","Minimal background text with no technical compliance instructions"],"plain_english_summary":"**What this does:** This document cancels a previous aviation safety rule (called an **Airworthiness Directive** or **AD**) that applied to specific aircraft.\n\n**Who it affects:** Owners and operators of **Piper PA-42 (Cheyenne III)** series aeroplanes.\n\n**The old requirement:** The previous rule required replacement of rivets at the junction between the tail fin and the fuselage body, following Piper Service Bulletin No. 765, within 100 hours of flying time after September 1983.\n\n**What changes now:** As of 9 April 2009, this maintenance obligation is completely removed. Owners no longer need to perform this specific rivet replacement to comply with Australian law.\n\n**Why it matters:** It eliminates an outdated mandatory maintenance task, reducing compliance costs and administrative burden for operators while CASA (the aviation safety regulator) has determined the requirement is no longer necessary for safety."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-42-3-tail-fin-fuselage-rivet-installation-replacement-cancelled","history":"/api/acts/ad-pa-42-3-tail-fin-fuselage-rivet-installation-replacement-cancelled/history","analysis":"/api/acts/ad-pa-42-3-tail-fin-fuselage-rivet-installation-replacement-cancelled/analysis","conflicts":"/api/acts/ad-pa-42-3-tail-fin-fuselage-rivet-installation-replacement-cancelled/conflicts","importantCases":"/api/acts/ad-pa-42-3-tail-fin-fuselage-rivet-installation-replacement-cancelled/important-cases","documents":"/api/acts/ad-pa-42-3-tail-fin-fuselage-rivet-installation-replacement-cancelled/documents"}}