{"id":"F2007L04814","name":"AD/CESSNA 170/54 - Aircraft Repair - CANCELLED","slug":"ad-cessna-170-54-aircraft-repair-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":71480,"registerId":"commonwealth-F2007L04814-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Cessna 170, 172, F172, FR172 and 175 Ser","sectionType":"division","heading":"Cessna 170, 172, F172, FR172 and 175 Series Aeroplanes","content":"### Cessna 170, 172, F172, FR172 and 175 Series Aeroplanes\n\n| AD/CESSNA 170/54 | Aircraft Repair | 1/2008 |\n| ---------------- | --------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                  |\n| ------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 17 January 2008.                                                                                                                                                                                    |\n| Background:  | This AD was applicable to aircraft repaired by Capricorn Aircraft Repair of Thangool between 1985 and 1990. This required a one off inspection at the next Maintenance Release after 21 March 1991. The AD is now obsolete. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n27 November 2007","sortOrder":0},{"sectionNumber":"AD/CESSNA 170/54","sectionType":"part","heading":"AD/CESSNA 170/54","content":"## AD/CESSNA 170/54","sortOrder":1},{"sectionNumber":"Aircraft Repair","sectionType":"part","heading":"Aircraft Repair","content":"## Aircraft Repair","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":2436},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument serves a single, limited purpose: to cancel a previous Airworthiness Directive. It does not expand beyond this original intent."},"complexity_factors":["Single operative provision (cancellation)","No defined terms or interpretation section","No cross-references to primary legislation","Extremely brief (approximately 50 words of substantive content)","No conditional logic, exceptions, or procedural steps"],"plain_english_summary":"This document officially cancels an old aviation safety rule (called an **Airworthiness Directive** or AD).\n\n**What it does:**\n- Cancels directive AD/CESSNA 170/54 effective 17 January 2008\n- Removes a mandatory one-time inspection requirement for certain Cessna aircraft\n\n**Who it affects:**\n- Owners and operators of Cessna 170, 172, F172, FR172 and 175 series aeroplanes that were previously repaired by Capricorn Aircraft Repair in Thangool between 1985 and 1990\n\n**Why it matters:**\nThe original rule required a specific safety inspection at the next maintenance check after March 1991. Since that deadline passed more than 17 years ago and the safety circumstances are no longer relevant, the Civil Aviation Safety Authority has cancelled the rule as obsolete."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-170-54-aircraft-repair-cancelled","history":"/api/acts/ad-cessna-170-54-aircraft-repair-cancelled/history","analysis":"/api/acts/ad-cessna-170-54-aircraft-repair-cancelled/analysis","conflicts":"/api/acts/ad-cessna-170-54-aircraft-repair-cancelled/conflicts","importantCases":"/api/acts/ad-cessna-170-54-aircraft-repair-cancelled/important-cases","documents":"/api/acts/ad-cessna-170-54-aircraft-repair-cancelled/documents"}}