{"id":"F2007L04742","name":"AD/BEECH 23/27 Amdt 1 - Engine Firewall Aluminium Fittings - CANCELLED","slug":"ad-beech-23-27-amdt-1-engine-firewall-aluminium-fittings-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":71243,"registerId":"commonwealth-F2007L04742-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Beechcraft 19, 23 and 24 Series Aeroplan","sectionType":"division","heading":"Beechcraft 19, 23 and 24 Series Aeroplanes","content":"### Beechcraft 19, 23 and 24 Series Aeroplanes\n\n| AD/BEECH 23/27 Amdt 1 | Engine Firewall Aluminium Fittings | 1/2008 |\n| --------------------- | ---------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                         |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n|              | This AD is cancelled on 17 January 2008.                                                                                                                                                                           |\n| Background:  | This is a unique Australian AD that required aluminium end fittings to be replaced by steel end fittings before November 1975. The AD does not align with the State of Design AD requirements and is now obsolete. |\n\n![](image.001.png)\n\nDavid Punshon  \nDelegate of the Civil Aviation Safety Authority\n\n29 November 2007","sortOrder":0},{"sectionNumber":"AD/BEECH 23/27 Amdt 1","sectionType":"part","heading":"AD/BEECH 23/27 Amdt 1","content":"## AD/BEECH 23/27 Amdt 1","sortOrder":1},{"sectionNumber":"Engine Firewall Aluminium Fittings","sectionType":"part","heading":"Engine Firewall Aluminium Fittings","content":"## Engine Firewall Aluminium Fittings","sortOrder":2},{"sectionNumber":"1/2008","sectionType":"part","heading":"1/2008","content":"## 1/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2156},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":true,"description":"The original AD imposed mandatory hardware replacement requirements on specific aircraft. This amendment eliminates all operative requirements entirely, reducing the regulatory scope to zero."},"complexity_factors":["Single operative provision (cancellation only)","No defined terms or interpretation section","No conditional logic, exceptions, or cross-references to other legislation sections","Document is shorter than one page with minimal legal text"],"plain_english_summary":"**What this does:** This document officially cancels (revokes) a previous aviation safety rule called Airworthiness Directive (AD) AD/BEECH 23/27.\n\n**Who it affects:** Owners and operators of Beechcraft 19, 23, and 24 series aeroplanes (small aircraft).\n\n**What the old rule required:** The original directive required replacing aluminium end fittings on engine firewalls with steel ones by November 1975.\n\n**Why it matters:** The old rule was unique to Australia and didn't match the safety requirements set by the country where the aircraft were originally designed. Since it's now obsolete, this cancellation removes the requirement entirely as of 17 January 2008. Aircraft owners no longer need to comply with the aluminium-to-steel fitting replacement rule."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-23-27-amdt-1-engine-firewall-aluminium-fittings-cancelled","history":"/api/acts/ad-beech-23-27-amdt-1-engine-firewall-aluminium-fittings-cancelled/history","analysis":"/api/acts/ad-beech-23-27-amdt-1-engine-firewall-aluminium-fittings-cancelled/analysis","conflicts":"/api/acts/ad-beech-23-27-amdt-1-engine-firewall-aluminium-fittings-cancelled/conflicts","importantCases":"/api/acts/ad-beech-23-27-amdt-1-engine-firewall-aluminium-fittings-cancelled/important-cases","documents":"/api/acts/ad-beech-23-27-amdt-1-engine-firewall-aluminium-fittings-cancelled/documents"}}