{"id":"F2009L01562","name":"AD/CHA/4 - Fuel Lines in Engine Compartment - CANCELLED","slug":"ad-cha-4-fuel-lines-in-engine-compartment-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":78278,"registerId":"commonwealth-F2009L01562-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"American Champion (Aeronca, Bellanca) Se","sectionType":"division","heading":"American Champion (Aeronca, Bellanca) Series Aeroplanes","content":"### American Champion (Aeronca, Bellanca) Series Aeroplanes\n\n| AD/CHA/4 | Fuel Lines in Engine Compartment | 5/2009 |\n| -------- | -------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                   |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n|              | This AD is cancelled on 7 May 2009.                                                                                                                                                                                                                          |\n| Background:  | This unique Australian AD, issued in 1971, required replacement of engine component aluminium lines with fire resistant assemblies. The AD compliance was by 29 October 1971. As all aircraft would have been modified by now, the AD is no longer required. |\n\n![](image.001.png)\n\nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n27 March 2009","sortOrder":0},{"sectionNumber":"AD/CHA/4","sectionType":"part","heading":"AD/CHA/4","content":"## AD/CHA/4","sortOrder":1},{"sectionNumber":"Fuel Lines in Engine Compartment","sectionType":"part","heading":"Fuel Lines in Engine Compartment","content":"## Fuel Lines in Engine Compartment","sortOrder":2},{"sectionNumber":"5/2009","sectionType":"part","heading":"5/2009","content":"## 5/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":3467},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":true,"description":"The original 1971 directive imposed active mandatory safety modifications on aircraft fuel systems. This instrument eliminates those requirements entirely, changing the scope from imposing compliance obligations to nil (complete cancellation)."},"complexity_factors":["Single operative provision (cancellation)","No defined terms or interpretation section","No conditional logic, exceptions or cross-references to other instruments","Extremely short length with minimal operative text"],"plain_english_summary":"This document cancels an obsolete aviation safety rule for specific light aircraft.\n\n**What it does**\n- Revokes Airworthiness Directive AD/CHA/4, which mandated that owners of American Champion, Aeronca and Bellanca series aeroplanes replace aluminium fuel lines with fire-resistant assemblies in the engine compartment.\n\n**Why it matters**\n- The original directive achieved its safety purpose long ago, with all affected aircraft required to comply by 1971. \n- This cancellation formally removes the spent rule from the books, confirming that owners no longer have a legal obligation to perform this specific modification.\n\n**Who it affects**\n- Owners and maintainers of American Champion (including Aeronca and Bellanca) series aircraft. While these operators have been complying with this rule for decades, this document officially ends the requirement."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cha-4-fuel-lines-in-engine-compartment-cancelled","history":"/api/acts/ad-cha-4-fuel-lines-in-engine-compartment-cancelled/history","analysis":"/api/acts/ad-cha-4-fuel-lines-in-engine-compartment-cancelled/analysis","conflicts":"/api/acts/ad-cha-4-fuel-lines-in-engine-compartment-cancelled/conflicts","importantCases":"/api/acts/ad-cha-4-fuel-lines-in-engine-compartment-cancelled/important-cases","documents":"/api/acts/ad-cha-4-fuel-lines-in-engine-compartment-cancelled/documents"}}