{"id":"F2006B04259","name":"AD/BEECH 90/73 - Stabilisers - Replacement of Elevators","slug":"ad-beech-90-73-stabilisers-replacement-of-elevators","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44056,"registerId":"commonwealth-F2006B04259-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 90/73 - Stabilisers - Replacement of Elevators","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Beechcraft 90 and 65-90 (King Air) Series Aeroplanes\n\n \n\nAD/BEECH 90/73 Stabilisers - Replacement of Elevators 12/84\n\nApplicability: All models with S/Nos referenced in Beechcraft Service Bulletin No. 2030. Document:               Beechcraft S.B. No. 2030.\n\nCompliance: Unless already accomplished per Beechcraft SI No. 1207, within 100 hours’ time in service after 31 December 1984.\n\n \n\nBackground:  Elevators on certain aeroplanes or aeroplanes fitted with replacement elevators may have improperly bonded honeycomb stiffener strips installed. S.B. No. 2030 extends compliance to this model, corrects part number errors and supersedes and cancels Service Instruction No. 1207.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2479},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a narrow, technical airworthiness directive targeting a specific manufacturing defect in elevator assemblies. The scope remains strictly limited to the replacement/inspection of elevators on affected Beechcraft 90 series aircraft, exactly as originally intended."},"complexity_factors":["External document dependency - actual compliance requirements and affected serial numbers are contained in referenced Beechcraft Service Bulletin No. 2030, not in the directive text","Conditional compliance pathway allowing exception if prior work completed under superseded Service Instruction No. 1207","Technical aviation terminology requiring knowledge of aircraft components (elevators, stabilisers, time in service)"],"plain_english_summary":"Owners/operators of certain Beechcraft King Air 90 and 65‑90 series aircraft must inspect or replace the elevators because some units have improperly bonded honeycomb stiffeners that could cause in‑flight elevator failure and loss of control. Affected serial numbers are listed in Beechcraft Service Bulletin No. 2030; compliance is required within 100 hours time‑in‑service after 31 December 1984 unless already done under Service Instruction No. 1207."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-90-73-stabilisers-replacement-of-elevators","history":"/api/acts/ad-beech-90-73-stabilisers-replacement-of-elevators/history","analysis":"/api/acts/ad-beech-90-73-stabilisers-replacement-of-elevators/analysis","conflicts":"/api/acts/ad-beech-90-73-stabilisers-replacement-of-elevators/conflicts","importantCases":"/api/acts/ad-beech-90-73-stabilisers-replacement-of-elevators/important-cases","documents":"/api/acts/ad-beech-90-73-stabilisers-replacement-of-elevators/documents"}}