{"id":"F2009L00875","name":"AD/PA-42/14 - Tailcone Drain Holes - CANCELLED","slug":"ad-pa-42-14-tailcone-drain-holes-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":78141,"registerId":"commonwealth-F2009L00875-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Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-42 (Cheyenne III) Series Aeropl","sectionType":"division","heading":"Piper PA-42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-42/14 | Tailcone Drain Holes | 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 drain holes in the tailcone in accordance with Piper SB No. 857 at the next maintenance release inspection, or within 50 hours time in service, after June 1987. 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-42/14","sectionType":"part","heading":"AD/PA-42/14","content":"## AD/PA-42/14","sortOrder":1},{"sectionNumber":"Tailcone Drain Holes","sectionType":"part","heading":"Tailcone Drain Holes","content":"## Tailcone Drain Holes","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":2657},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument is a pure revocation. It does not expand the scope of the legislation; rather, it terminates the legal effect of the previous Airworthiness Directive entirely. The scope is limited to removing the specific maintenance requirement for the Piper PA-42 aircraft model."},"complexity_factors":["Single operative provision (cancellation only)","No defined terms or interpretation section","No conditional logic, exceptions, or cross-references to other legislation","Extremely short length (core content is one sentence)","Background information provided for context only, not forming part of the legal requirement"],"plain_english_summary":"This document **cancels a previous aircraft safety rule** for Piper PA-42 (Cheyenne III) aeroplanes.\n\n**What it did previously:** The original Airworthiness Directive (AD) required owners to inspect drain holes in the aircraft's tailcone according to Piper Service Bulletin No. 857. This had to be done at the next maintenance check or within 50 flight hours after June 1987.\n\n**What this document does:** It **removes that inspection requirement** effective **9 April 2009**.\n\n**Who is affected:** Owners and operators of Piper PA-42 (Cheyenne III) series aircraft.\n\n**Why it matters:** This cancels a specific maintenance obligation, meaning operators no longer need to schedule or pay for these mandated tailcone drain hole inspections. The Civil Aviation Safety Authority determined the safety requirement was no longer necessary."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-42-14-tailcone-drain-holes-cancelled","history":"/api/acts/ad-pa-42-14-tailcone-drain-holes-cancelled/history","analysis":"/api/acts/ad-pa-42-14-tailcone-drain-holes-cancelled/analysis","conflicts":"/api/acts/ad-pa-42-14-tailcone-drain-holes-cancelled/conflicts","importantCases":"/api/acts/ad-pa-42-14-tailcone-drain-holes-cancelled/important-cases","documents":"/api/acts/ad-pa-42-14-tailcone-drain-holes-cancelled/documents"}}