{"id":"F2009L02218","name":"AD/MU-2/2 - Windows - Cabin and Cockpit - Modification - CANCELLED","slug":"ad-mu-2-2-windows-cabin-and-cockpit-modification-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":162010,"registerId":"commonwealth-F2009L02218-current","compilationNumber":null,"startDate":"2026-04-04","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Mitsubishi MU-2 Series Aeroplanes","sectionType":"division","heading":"Mitsubishi MU-2 Series Aeroplanes","content":"### Mitsubishi MU-2 Series Aeroplanes\n\n| AD/MU-2/2 | Windows - Cabin and Cockpit - Modification | 7/2009 |\n| --------- | ------------------------------------------ | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                                              |\n| ------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 2 July 2009.                                                                                                                                                                                                                                                                                    |\n| Background:  | This AD, issued in 1970, required modification of the cabin and cockpit windows in accordance with MU-2 SB No.102 to extend the service life and improve the in-flight comfort. The AD compliance was before 1800 hours time in service. As all aircraft would have been modified by now, the AD is no longer required. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n19 May 2009","sortOrder":0},{"sectionNumber":"AD/MU-2/2","sectionType":"part","heading":"AD/MU-2/2","content":"## AD/MU-2/2","sortOrder":1},{"sectionNumber":"Windows - Cabin and Cockpit - Modificati","sectionType":"part","heading":"Windows - Cabin and Cockpit - Modification","content":"## Windows - Cabin and Cockpit - Modification","sortOrder":2},{"sectionNumber":"7/2009","sectionType":"part","heading":"7/2009","content":"## 7/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1882},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument terminates the original legislation rather than expanding it. The 1970 directive required window modifications; this 2009 instrument simply recognises that compliance is now universal and formally removes the obligation."},"complexity_factors":["Single operative provision (cancellation of a previous directive)","No defined terms, interpretive provisions, or schedules","No conditional logic, exceptions, or cross-references to other legislation","Total substantive text under 150 words","Removes regulatory burden rather than creating new obligations"],"plain_english_summary":"This document officially cancels an old aircraft safety rule that is no longer needed.\n\n**What it was:** Back in 1970, the Civil Aviation Safety Authority required owners of Mitsubishi MU-2 aeroplanes to modify the cabin and cockpit windows before each aircraft reached 1,800 hours of flying time. The change (specified in Mitsubishi Service Bulletin No. 102) was designed to extend window life and make flights quieter and more comfortable.\n\n**Why it's cancelled:** Nearly 40 years later, every affected aircraft that is still flying has already made these modifications. Because compliance is now universal, the rule is redundant.\n\n**What happens now:** Aircraft owners and operators no longer need to track or prove compliance with this specific requirement. The cancellation takes effect on 2 July 2009."}},"importantCases":[],"_links":{"self":"/api/acts/ad-mu-2-2-windows-cabin-and-cockpit-modification-cancelled","history":"/api/acts/ad-mu-2-2-windows-cabin-and-cockpit-modification-cancelled/history","analysis":"/api/acts/ad-mu-2-2-windows-cabin-and-cockpit-modification-cancelled/analysis","conflicts":"/api/acts/ad-mu-2-2-windows-cabin-and-cockpit-modification-cancelled/conflicts","importantCases":"/api/acts/ad-mu-2-2-windows-cabin-and-cockpit-modification-cancelled/important-cases","documents":"/api/acts/ad-mu-2-2-windows-cabin-and-cockpit-modification-cancelled/documents"}}