{"id":"F2006B04211","name":"AD/BEECH 90/18 - Rudder Control System - Inspection","slug":"ad-beech-90-18-rudder-control-system-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43967,"registerId":"commonwealth-F2006B04211-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 90/18 - Rudder Control System - 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 90/18 Rudder Control System - Inspection 11/69\n\nApplicability: Model B90 with S/Nos. LJ-427 to LJ-457. Document:  Beechcraft SI No. 0277-154.\n\nCompliance: Forthwith.\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\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2399},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This appears to be the original text of the Airworthiness Directive as issued. The scope remains tightly focused on the specific rudder control system inspection for the identified Beechcraft B90 serial numbers, with no indication of expansion beyond the original safety concern addressed in November 1969."},"complexity_factors":["Single compliance requirement (one inspection only)","Narrow applicability restricted to specific aircraft serial numbers (LJ-427 to LJ-457)","No conditional logic, exceptions, or procedural alternatives","Minimal cross-referencing (only to one external manufacturer document)","Extremely short length (single paragraph of substantive content)"],"plain_english_summary":"**What this is:** A mandatory safety order (called an Airworthiness Directive) issued by the Civil Aviation Safety Authority (CASA) under Commonwealth aviation law.\n\n**What it requires:** Owners and operators of specific Beechcraft B90 King Air aeroplanes must immediately inspect the aircraft's rudder control system following the procedures in Beechcraft Service Information Document No. 0277-154.\n\n**Who is affected:** Only applies to Model B90 aircraft with serial numbers between LJ-427 and LJ-457. If your aircraft isn't in this specific range, this directive doesn't apply to you.\n\n**When it takes effect:** Immediately (**'forthwith'** means right now, not at the next scheduled maintenance).\n\n**Why it matters:** This addresses a specific safety defect or wear issue with the rudder control system that could affect the pilot's ability to steer the aircraft. Compliance is mandatory for airworthiness."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-90-18-rudder-control-system-inspection","history":"/api/acts/ad-beech-90-18-rudder-control-system-inspection/history","analysis":"/api/acts/ad-beech-90-18-rudder-control-system-inspection/analysis","conflicts":"/api/acts/ad-beech-90-18-rudder-control-system-inspection/conflicts","importantCases":"/api/acts/ad-beech-90-18-rudder-control-system-inspection/important-cases","documents":"/api/acts/ad-beech-90-18-rudder-control-system-inspection/documents"}}