{"id":"F2009L03026","name":"AD/MCH/8 - Cabin Trim Head Shield - Installation - CANCELLED","slug":"ad-mch-8-cabin-trim-head-shield-installation-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":80582,"registerId":"commonwealth-F2009L03026-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Aero Resources J2 Series Gyroplanes","sectionType":"division","heading":"Aero Resources J2 Series Gyroplanes","content":"### Aero Resources J2 Series Gyroplanes\n\n| AD/MCH/8 | Cabin Trim Head Shield - Installation | 9/2009 |\n| -------- | ------------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                                                                 |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n|              | This AD is cancelled on 27 August 2009.                                                                                                                                                                                                                                                                                                    |\n| Background:  | This AD, raised in 1975, required a modification by installation of an aluminium cover plate to the cabin 'A' frame to shield the cabin lining from heat damage in the event of an engine fire. Compliance was required before 30 November 1975.As all affected aircraft would have been 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\n30 June 2009","sortOrder":0},{"sectionNumber":"AD/MCH/8","sectionType":"part","heading":"AD/MCH/8","content":"## AD/MCH/8","sortOrder":1},{"sectionNumber":"Cabin Trim Head Shield - Installation","sectionType":"part","heading":"Cabin Trim Head Shield - Installation","content":"## Cabin Trim Head Shield - Installation","sortOrder":2},{"sectionNumber":"9/2009","sectionType":"part","heading":"9/2009","content":"## 9/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1592},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument performs a straightforward revocation of a previous Airworthiness Directive without expanding or altering its original scope. The 1975 AD concerned cabin trim head shield installation on specific gyroplane models; this 2009 instrument merely cancels that requirement as obsolete, maintaining the same subject matter and affected aircraft population throughout."},"complexity_factors":["Single, unambiguous operative provision (cancellation)","No defined terms or interpretation section","No conditional logic, exceptions, or cross-references","Extremely brief substantive content (under 150 words)","Straightforward retrospective application (referencing only historical facts)"],"plain_english_summary":"**What this does:** This document officially cancels an old aviation safety rule (called an Airworthiness Directive or AD) that applied to **Aero Resources J2 Series Gyroplanes**.\n\n**What the old rule required:** Originally issued in 1975, the directive required owners to install an aluminium cover plate (heat shield) on the cabin 'A' frame. This was to protect the cabin lining from burning if the engine caught fire. Owners had to complete this by November 1975.\n\n**Why it's being cancelled:** Since all affected aircraft were legally required to make this modification over 30 years ago, the work has already been done on every plane. The rule is now obsolete, so the Civil Aviation Safety Authority (CASA) has formally cancelled it effective 27 August 2009.\n\n**Who this affects:** Owners and operators of Aero Resources J2 Series Gyroplanes—though practically speaking, this is simply administrative housekeeping to remove a redundant rule from the books."}},"importantCases":[],"_links":{"self":"/api/acts/ad-mch-8-cabin-trim-head-shield-installation-cancelled","history":"/api/acts/ad-mch-8-cabin-trim-head-shield-installation-cancelled/history","analysis":"/api/acts/ad-mch-8-cabin-trim-head-shield-installation-cancelled/analysis","conflicts":"/api/acts/ad-mch-8-cabin-trim-head-shield-installation-cancelled/conflicts","importantCases":"/api/acts/ad-mch-8-cabin-trim-head-shield-installation-cancelled/important-cases","documents":"/api/acts/ad-mch-8-cabin-trim-head-shield-installation-cancelled/documents"}}