{"id":"F2006B03644","name":"AD/BEECH 1900/27 - Inspection for Flight Control Interference with Wiring","slug":"ad-beech-1900-27-inspection-for-flight-control-interference-with-wiring","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43234,"registerId":"commonwealth-F2006B03644-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 1900/27 - Inspection for Flight Control Interference with Wiring","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nBeechcraft 1900 Series Aeroplanes\n\nAD/BEECH 1900/27 Inspection for Flight Control\n\nInterference with Wiring\n\nApplicability: This Directive is applicable to the following aircraft.\n\nModel Serial Numbers\n\n  \n7/99\n\nDM\n\n1900D UE-1 through UE-319 inclusive, UE-321, UE-323 through UE-328 inclusive, UE-330 and UE-332.\n\nRequirement: Unless previously accomplished;\n\n    Inspect for interference or inadequate clearance between the flight control mechanism and any component located forward of the instrument in accordance with Raytheon Mandatory Service Bulletin (SB) 27-3232 dated March 1999.\n\n    2. If interference or inadequate clearance is found during the Requirement 1 inspection then secure all components clear of the flight control mechanisms in accordance with SB 27-3232.\n\nNote 1. If Raytheon Safety Communiqué No 149 dated August 1998 or No 149 Rev 1 dated November 1998 has been carried out no further action is required.\n\nNote 2. FAA AD 99-09-15 refers.\n\nCompliance: 1. Within 25 hours time in service after 19 May 1999.\n\n2. Prior to further flight after inspection.\n\nThis Airworthiness Directive becomes effective on 19 May 1999.\n\nBackground: There has been a reported incident were a Raytheon Beech Model 1900 aeroplane temporarily lost aileron and elevator control when the control column became restricted. Upon investigation the cause was found to be electrical/avionics wiring located forward of the instrument panel entangled in the flight control system “T” column.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard airworthiness directive with a narrow, specific safety purpose — addressing a known mechanical interference issue in a particular aircraft type. It has not expanded beyond its original intent."},"complexity_factors":["Single, specific mechanical inspection requirement with clear reference to manufacturer service bulletin","Only one conditional branch (if interference found, then secure components)","Limited applicability (specific aircraft model and serial number range)","Two simple compliance deadlines (time-based and condition-based)","Minimal cross-referencing (one FAA AD reference, one service bulletin, one prior safety communiqué)","No defined terms section, no nested exceptions, no interpretive provisions"],"plain_english_summary":"This CASA safety order requires owners/operators of early Beechcraft 1900D aircraft to urgently inspect flight‑control systems for electrical wiring that could foul aileron or elevator controls, and to secure any wiring found interfering before the next flight. \n\nIt responds to an actual incident causing temporary loss of control, must be done within 25 flight hours from 19 May 1999, and exempts aircraft already inspected under Raytheon Safety Communiqué No. 149 (Aug–Nov 1998)."},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The Directive applies only to the listed Beechcraft 1900D serial numbers and mandates inspection and corrective action per Raytheon SB 27-3232, with an exemption for aircraft that have already complied with Raytheon Safety Communiqué No.149/Rev 1. It sets a 25-hour inspection deadline and requires securing defects before further flight. There is no expansion to other models or additional obligations beyond those specified in the text."},"complexity_factors":["Narrow applicability limited to specific Beechcraft 1900D serial numbers (reduces scope complexity).","Relies on an external Raytheon Mandatory Service Bulletin (SB 27-3232) for procedural detail (dependency on outside document).","Two-step, straightforward actions: inspect within 25 hours and secure items before further flight (low procedural complexity).","Exemption for aircraft that already implemented Raytheon Safety Communiqué No.149/Rev 1 (adds a simple eligibility check).","Short compliance window and a 'prior to further flight' requirement create operational scheduling pressure for operators.","Clear enforcement trigger (FAA AD cross-reference and CASA effective date) leaves little regulator discretion in application."],"plain_english_summary":"This Airworthiness Directive requires operators of listed Beechcraft 1900D aircraft to inspect, within 25 flight hours, for wiring or other components forward of the instrument panel that could become entangled in the flight‑control “T” column and to secure any items found according to Raytheon Service Bulletin SB 27‑3232. It responds to a reported temporary loss of aileron and elevator when wiring restricted the control column. Operators (owners) pay for the inspection and fixes; maintenance organisations perform the work under the SB; CASA enforces compliance."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-1900-27-inspection-for-flight-control-interference-with-wiring","history":"/api/acts/ad-beech-1900-27-inspection-for-flight-control-interference-with-wiring/history","analysis":"/api/acts/ad-beech-1900-27-inspection-for-flight-control-interference-with-wiring/analysis","conflicts":"/api/acts/ad-beech-1900-27-inspection-for-flight-control-interference-with-wiring/conflicts","importantCases":"/api/acts/ad-beech-1900-27-inspection-for-flight-control-interference-with-wiring/important-cases","documents":"/api/acts/ad-beech-1900-27-inspection-for-flight-control-interference-with-wiring/documents"}}