{"id":"F2008L02939","name":"AD/CESSNA 400/18 - Crew Door - Modification - CANCELLED","slug":"ad-cessna-400-18-crew-door-modification-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":74885,"registerId":"commonwealth-F2008L02939-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Cessna 400 Series Aeroplanes","sectionType":"division","heading":"Cessna 400 Series Aeroplanes","content":"### Cessna 400 Series Aeroplanes\n\n| AD/CESSNA 400/18 | Crew Door - Modification | 9/2008 |\n| ---------------- | ------------------------ | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                                                                  |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 28 August 2008.                                                                                                                                                                                                                                                                                                     |\n| Background:  | This unique Australian AD, issued in 1970, required modification of the crew door in accordance with Cessna Service Letter ME 70-11 to ensure the door fully closes and properly locks. The AD compliance was within 25 hours time in service after5 June 1970. As all aircraft would have now been modified, the AD is no longer required. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n18 July 2008","sortOrder":0},{"sectionNumber":"AD/CESSNA 400/18","sectionType":"part","heading":"AD/CESSNA 400/18","content":"## AD/CESSNA 400/18","sortOrder":1},{"sectionNumber":"Crew Door - Modification","sectionType":"part","heading":"Crew Door - Modification","content":"## Crew Door - Modification","sortOrder":2},{"sectionNumber":"9/2008","sectionType":"part","heading":"9/2008","content":"## 9/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1603},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument performs exactly one function: cancelling the previous Airworthiness Directive. It does not expand the scope beyond this cancellation or introduce new regulatory requirements."},"complexity_factors":["Single operative provision (cancellation only)","No defined terms or interpretation section","No cross-references to other legislation (only references the specific AD being cancelled)","No conditional logic, exceptions, or procedural requirements"],"plain_english_summary":"**What this does:** This document officially cancels an outdated aircraft safety rule.\n\n**Who it affects:** Owners and operators of Cessna 400 series aeroplanes (though the practical effect is minimal since compliance was completed decades ago).\n\n**The details:** Back in 1970, a safety directive required modifications to crew doors on these planes to ensure they closed and locked properly. All affected aircraft had to comply within 25 hours of flying time after June 1970.\n\n**Why it matters:** Because that deadline passed nearly 40 years ago, every affected aircraft has long since been modified. The rule is now obsolete, so this document officially removes it from the books. No further action is required by aircraft owners."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-400-18-crew-door-modification-cancelled","history":"/api/acts/ad-cessna-400-18-crew-door-modification-cancelled/history","analysis":"/api/acts/ad-cessna-400-18-crew-door-modification-cancelled/analysis","conflicts":"/api/acts/ad-cessna-400-18-crew-door-modification-cancelled/conflicts","importantCases":"/api/acts/ad-cessna-400-18-crew-door-modification-cancelled/important-cases","documents":"/api/acts/ad-cessna-400-18-crew-door-modification-cancelled/documents"}}