{"id":"F2006B04218","name":"AD/BEECH 90/27 - Control Wheel Adapter - Inspection","slug":"ad-beech-90-27-control-wheel-adapter-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43974,"registerId":"commonwealth-F2006B04218-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 90/27 - Control Wheel Adapter - 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 90/27 Control Wheel Adapter - Inspection 6/72\n\nApplicability: All models.\n\n \n\nDocument: Beechcraft SI No. 0497-155.\n\n \n\nCompliance: Within 25 hours’ time in service after 10 May 1972 and thereafter at intervals not exceeding 500 hours’ time in service until adapter P/No. 99-524036-33 is installed.\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":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a vintage 1972 airworthiness directive that remains in its original, narrow scope. It addresses a specific mechanical defect in a specific aircraft type with a clear compliance pathway. There is no evidence of scope creep — the directive has not expanded to cover additional aircraft types, components, or operational scenarios beyond the original control wheel adapter issue."},"complexity_factors":["Single, specific mechanical component addressed (control wheel adapter)","Clear, fixed compliance deadline (25 hours after 10 May 1972)","Simple recurring interval (every 500 hours time in service)","Single termination condition (installation of specific part number)","No nested exceptions, conditional logic, or cross-references to other legislation","Only one external document reference (Beechcraft SI No. 0497-155)","Extremely short — approximately 100 words of substantive content"],"plain_english_summary":"**What this is:** This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998.\n\n**What it does:** It requires owners and operators of **Beechcraft 90 and 65-90 (King Air) series aircraft** to inspect a specific part called the **\"control wheel adapter\"** — a component that connects the pilot's control wheel (yoke) to the aircraft's control systems.\n\n**Who must comply:** Anyone operating these specific Beechcraft King Air models, regardless of which variant they own.\n\n**What must be done:**\n- **First inspection:** Within 25 hours of flying time after 10 May 1972\n- **Ongoing inspections:** Every 500 hours of flying time thereafter\n- **When it stops:** Once a specific replacement part (part number 99-524036-33) is installed, the recurring inspections are no longer required\n\n**Why it matters:** This AD addresses a potential safety defect in the control wheel adapter that could affect the pilot's ability to control the aircraft. The recurring inspection requirement ensures the defect is caught before it causes an accident, and the ultimate fix is installing the improved replacement part.\n\n**Key document reference:** Operators must follow Beechcraft Service Instruction No. 0497-155 for the exact inspection procedure."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive’s scope, as stated in the text provided, applies to all Beechcraft 90 and 65-90 models and sets inspection timing until a specific replacement part is installed (Applicability; Compliance). There is no indication in the supplied text that the scope has been broadened or narrowed beyond those statements; the mechanical requirement is limited to recurring inspections until adapter P/No. 99-524036-33 is installed and references Beechcraft SI No. 0497-155 for procedure (Document)."},"complexity_factors":["Fixed, short initial compliance window (within 25 hours’ time in service after 10 May 1972) increases immediate logistical complexity.","Recurring inspection interval (not exceeding 500 hours’ time in service) requires ongoing time-in-service tracking and scheduling.","Termination condition tied to a specific replacement part number (P/No. 99-524036-33) — operators must identify and install that exact part to stop inspections.","Procedural details are external: the directive refers to Beechcraft SI No. 0497-155 for inspection steps, so compliance requires consulting and applying that document.","Applicability to 'All models' concentrates the directive’s reach across the type, increasing the population of aircraft and operators who must implement the requirement.","Recordkeeping and maintenance-management processes are implied but not specified in the directive text, creating administrative obligations for operators."],"plain_english_summary":"This directive mandates recurrent inspections of the control‑wheel adapter on Beechcraft 90 and 65‑90 (King Air) series aircraft—first within 25 hours’ time‑in‑service after 10 May 1972 and thereafter at intervals not exceeding 500 hours—until the replacement adapter P/N 99‑524036‑33 is installed. It affects aircraft owners/operators (who must ensure and pay for inspections and any repairs) and maintenance providers (who perform the work), and points to Beechcraft Service Instruction No. 0497‑155 for inspection procedures."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-90-27-control-wheel-adapter-inspection","history":"/api/acts/ad-beech-90-27-control-wheel-adapter-inspection/history","analysis":"/api/acts/ad-beech-90-27-control-wheel-adapter-inspection/analysis","conflicts":"/api/acts/ad-beech-90-27-control-wheel-adapter-inspection/conflicts","importantCases":"/api/acts/ad-beech-90-27-control-wheel-adapter-inspection/important-cases","documents":"/api/acts/ad-beech-90-27-control-wheel-adapter-inspection/documents"}}