{"id":"F2006B04228","name":"AD/BEECH 90/37 - Elevator and Rudder Trim Tab Actuator Systems - Inspection","slug":"ad-beech-90-37-elevator-and-rudder-trim-tab-actuator-systems-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43987,"registerId":"commonwealth-F2006B04228-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 90/37 - Elevator and Rudder Trim Tab Actuator Systems - Inspection","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 90/37 Elevator and Rudder Trim Tab\n\nActuator Systems - Inspection\n\n\n2/75\n\n \n\nApplicability: All models 65-90, 65-A90,B90 & C90 with S/Nos. LJ-1 and subs., and model E90 with S/Nos. LW-1 and subs, which have in excess of 300 hours’ time in service.\n\n \n\nDocument: Beechcraft SI No. 0691-133-135.\n\n \n\nCompliance: Within 25 hours’ time in service after 22 January 1975 and thereafter at intervals not exceeding 100 hours’ time in service.\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\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2629},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a targeted airworthiness directive focused on a specific safety issue (trim tab actuator systems) for specific Beechcraft King Air models. It has not expanded beyond its original technical safety purpose."},"complexity_factors":["Single, specific mechanical inspection requirement","Precise applicability limited to specific aircraft models and serial number ranges","No conditional exceptions, nested definitions, or cross-references to other legislative provisions","Straightforward compliance timeline with only two intervals (initial and recurring)"],"plain_english_summary":"This rule requires owners/operators of certain Beechcraft King Air 65-90/B90/C90 and E90 series (serials LJ‑1/LW‑1 and subsequent) with over 300 flight hours to inspect elevator and rudder trim tab actuator systems to ensure safe pitch/yaw control. \n\nInspections must begin within 25 flight hours after 22 Jan 1975 and recur every 100 flight hours, following Beechcraft Service Information No. 0691‑133‑135, to prevent loss of control from trim failures."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-90-37-elevator-and-rudder-trim-tab-actuator-systems-inspection","history":"/api/acts/ad-beech-90-37-elevator-and-rudder-trim-tab-actuator-systems-inspection/history","analysis":"/api/acts/ad-beech-90-37-elevator-and-rudder-trim-tab-actuator-systems-inspection/analysis","conflicts":"/api/acts/ad-beech-90-37-elevator-and-rudder-trim-tab-actuator-systems-inspection/conflicts","importantCases":"/api/acts/ad-beech-90-37-elevator-and-rudder-trim-tab-actuator-systems-inspection/important-cases","documents":"/api/acts/ad-beech-90-37-elevator-and-rudder-trim-tab-actuator-systems-inspection/documents"}}