{"id":"F2009L03806","name":"AD/CESSNA 550/3 - Cabin Door Frame - Inspection, Modification and Replacement - CANCELLED","slug":"ad-cessna-550-3-cabin-door-frame-inspection-modification-and-replacement-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":81040,"registerId":"commonwealth-F2009L03806-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Cessna 550 (Citation II) Series Aeroplan","sectionType":"division","heading":"Cessna 550 (Citation II) Series Aeroplanes","content":"### Cessna 550 (Citation II) Series Aeroplanes\n\n| AD/CESSNA 550/3 | Cabin Door Frame - Inspection, Modification and Replacement | 12/2009 |\n| --------------- | ----------------------------------------------------------- | ------- |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                         |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n|              | This AD is cancelled on 19 November 2009.                                                                                                                                                                                                                          |\n| Background:  | This AD, raised in1982 against Cessna Citation II Service Bulletin (SB) 550-53-03 Rev 4, required an inspection and modification or replacement of the cabin door frame.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\n28 September 2009","sortOrder":0},{"sectionNumber":"AD/CESSNA 550/3","sectionType":"part","heading":"AD/CESSNA 550/3","content":"## AD/CESSNA 550/3","sortOrder":1},{"sectionNumber":"Cabin Door Frame - Inspection, Modificat","sectionType":"part","heading":"Cabin Door Frame - Inspection, Modification and Replacement","content":"## Cabin Door Frame - Inspection, Modification and Replacement","sortOrder":2},{"sectionNumber":"12/2009","sectionType":"part","heading":"12/2009","content":"## 12/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2269},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":true,"description":"This instrument fundamentally transforms AD/CESSNA 550/3 from an active airworthiness directive imposing mandatory inspection, modification and replacement obligations on operators (its original form since 1982) into a nullity that creates no legal duties. The scope has shifted from positive safety regulation to legislative cleanup."},"complexity_factors":["Single operative provision (cancellation of previous directive)","No defined terms or interpretive sections","No conditional logic, exceptions, or procedural steps","No cross-references to other legislation beyond self-reference","Extremely short (under 200 words of substantive content)"],"plain_english_summary":"**What this does:** This document officially cancels a previous aviation safety rule that required owners of specific Cessna aircraft to inspect and repair cabin door frames.\n\n**Who it affects:** Owners and operators of Cessna 550 (Citation II) series aeroplanes.\n\n**Why it matters:** The original directive (issued in 1982) mandated inspections and modifications to prevent potential failures of the cabin door frame. Because all aircraft affected by the original safety concern have long since been modified or repaired, that old rule is now redundant. This cancellation removes the compliance burden, meaning operators no longer need to perform these specific inspections or keep records for this particular directive.\n\n**Key point:** This is administrative housekeeping—clearing outdated safety requirements from the aviation rulebooks to avoid confusion."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-550-3-cabin-door-frame-inspection-modification-and-replacement-cancelled","history":"/api/acts/ad-cessna-550-3-cabin-door-frame-inspection-modification-and-replacement-cancelled/history","analysis":"/api/acts/ad-cessna-550-3-cabin-door-frame-inspection-modification-and-replacement-cancelled/analysis","conflicts":"/api/acts/ad-cessna-550-3-cabin-door-frame-inspection-modification-and-replacement-cancelled/conflicts","importantCases":"/api/acts/ad-cessna-550-3-cabin-door-frame-inspection-modification-and-replacement-cancelled/important-cases","documents":"/api/acts/ad-cessna-550-3-cabin-door-frame-inspection-modification-and-replacement-cancelled/documents"}}