{"id":"F2009L00182","name":"AD/ML-M4/3 - Elevator Trim Control - Modification - CANCELLED","slug":"ad-ml-m4-3-elevator-trim-control-modification-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":76623,"registerId":"commonwealth-F2009L00182-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Maule M-4 Series Aeroplanes","sectionType":"division","heading":"Maule M-4 Series Aeroplanes","content":"### Maule M-4 Series Aeroplanes\n\n| AD/ML-M4/3 | Elevator Trim Control - Modification | 2/2009 |\n| ---------- | ------------------------------------ | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                           |\n| ------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 12 February 2009.                                                                                                                                                                                                                            |\n| Background:  | This unique Australian AD, issued in 1967, required replacement of the elevator trim control assembly in accordance with Maule Service Letter No. 9. The AD compliance was forthwith. 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\n22 December 2008","sortOrder":0},{"sectionNumber":"AD/ML-M4/3","sectionType":"part","heading":"AD/ML-M4/3","content":"## AD/ML-M4/3","sortOrder":1},{"sectionNumber":"Elevator Trim Control - Modification","sectionType":"part","heading":"Elevator Trim Control - Modification","content":"## Elevator Trim Control - Modification","sortOrder":2},{"sectionNumber":"2/2009","sectionType":"part","heading":"2/2009","content":"## 2/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1900},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":true,"description":"This instrument eliminates the scope entirely. The original 1967 AD imposed a mandatory modification requirement on Maule M-4 aircraft; this 2008 cancellation removes that obligation completely because the safety objective has been achieved (all aircraft were modified decades ago)."},"complexity_factors":["Single operative provision consisting of one word: 'CANCELLED'","No defined terms or interpretation section","No conditional logic, exceptions, or cross-references to other legislation","Total length under 150 words","Straightforward retrospective application (cancellation effective 12 February 2009)"],"plain_english_summary":"**What this is:** This document officially cancels a decades-old aviation safety rule that required owners of Maule M-4 series aeroplanes to replace their elevator trim control assembly (the device that helps adjust the plane's pitch).\n\n**What it did:** The original rule — called an Airworthiness Directive (AD), which is a mandatory safety order from the aviation regulator — was issued in 1967. It required aircraft owners to follow \"Maule Service Letter No. 9\" to fix a potential safety issue with the trim controls.\n\n**Why it matters:** This cancellation recognises that the safety work was completed long ago. By 2009, every affected aircraft had already been modified, so the mandatory requirement was no longer needed. The directive is now effectively dead law."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ml-m4-3-elevator-trim-control-modification-cancelled","history":"/api/acts/ad-ml-m4-3-elevator-trim-control-modification-cancelled/history","analysis":"/api/acts/ad-ml-m4-3-elevator-trim-control-modification-cancelled/analysis","conflicts":"/api/acts/ad-ml-m4-3-elevator-trim-control-modification-cancelled/conflicts","importantCases":"/api/acts/ad-ml-m4-3-elevator-trim-control-modification-cancelled/important-cases","documents":"/api/acts/ad-ml-m4-3-elevator-trim-control-modification-cancelled/documents"}}