{"id":"F2006B03935","name":"AD/BEECH 400/8 - Main Wheel Well Wiring Harness","slug":"ad-beech-400-8-main-wheel-well-wiring-harness","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43544,"registerId":"commonwealth-F2006B03935-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 400/8 - Main Wheel Well Wiring Harness","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 400 Series Aeroplanes\n\nAD/BEECH 400/8 Main Wheel Well Wiring Harness 9/94\n\nApplicability: Model 400A aircraft with serial numbers RK-1 through RK-41 inclusive.\n\nRequirement: 1. Perform a general visual inspection to detect damage of the wiring harness in both of the main landing gear (MLG) wheel wells in accordance with Beechcraft Mandatory Service Bulletin 2479 Revision 1 dated November 1993.\n\n2. If any damage is found during the visual inspection, then prior to further flight, re- route and rectify the wiring harness in accordance with the Beechcraft Service Bulletin.\n\nNote: FAA AD 94-11-09 Amdt 39-8295 refers.\n\nCompliance: Within 200 hours’ time in service after 18 August 1994.\n\nBackground: Beechcraft has received reports of damage to the MLG wheel well wiring harnesses caused by contact with spinning main wheel tyres following landing gear retraction. The damage could result in the loss of control of the fuel supply to the engine or loss of control of the retraction/extension system for the MLG and MLG doors. The FAA compliance date is extended by approximately one calendar month.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific mechanical defect in a limited fleet of aircraft. It has not expanded beyond its original purpose of mandating inspection and repair of wheel well wiring harnesses."},"complexity_factors":["Single, specific aircraft model and narrow serial number range (RK-1 to RK-41)","Only two operational requirements: inspect, and repair if needed","Single compliance deadline with straightforward calculation (200 hours after fixed date)","No nested exceptions, conditional clauses, or alternative compliance methods","Minimal defined terms (only standard aviation terminology like 'MLG' for main landing gear)","Short document length (approximately 200 words)","Clear reference to external technical standard (Beechcraft Service Bulletin) rather than embedding complex technical specifications"],"plain_english_summary":"Owners/operators of 41 Beechcraft Model 400A aeroplanes (serials RK‑1 through RK‑41) must inspect the main landing‑gear wheel‑well wiring for chafing/damage and repair and re‑route any damaged harnesses before further flight. \n\nThis mandatory CASA Airworthiness Directive addresses wiring contact with spinning tyres that could cut engine fuel or impair gear operation, requires compliance per Beechcraft service guidance within 200 flight hours of 18 Aug 1994, and mirrors a related FAA order."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD remains narrowly targeted to the originally identified fleet (Model 400A, serials RK-1–RK-41) and prescribes inspection plus corrective action per the manufacturer bulletin with a 200‑hour compliance window. It does not expand or narrow the affected airframes or the required remediation beyond addressing the reported wiring-harness contact with spinning tyres."},"complexity_factors":["Narrow applicability: specific to Model 400A serial numbers RK-1 through RK-41 (Applicability).","Single, safety‑critical inspection and remedial action required: general visual inspection and, if damage found, immediate re‑route/rectify before further flight (Requirement).","Dependence on manufacturer documentation: inspection and repair must follow Beechcraft Mandatory Service Bulletin 2479 Revision 1 (Requirement).","Fixed compliance metric: 200 hours’ time in service from a specified date creates a measurable but operationally binding deadline (Compliance).","Immediate operational consequence if damage found: aircraft cannot be flown until corrective work is completed (Requirement — 'prior to further flight'), increasing potential downtime and maintenance scheduling cost.","Technical safety consequence motivating the AD: damage can result in loss of fuel-supply control or loss of MLG/door control, elevating enforcement priority (Background).","Cross-reference to FAA AD may require coordination for operators/commercial maintenance in jurisdictions recognising both directives (Background/Note)."],"plain_english_summary":"Requires operators of Beechcraft 400A aircraft (serial RK-1 to RK-41) to visually inspect the main landing-gear wheel-well wiring harnesses and, if damaged, re-route and repair them per the Beechcraft Service Bulletin before further flight. Compliance must occur within 200 hours’ time in service after 18 August 1994. This responds to reports that harnesses have contacted spinning main tyres after retraction, a failure mode that could lead to loss of engine fuel supply control or loss of control of the main landing gear and its doors."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-400-8-main-wheel-well-wiring-harness","history":"/api/acts/ad-beech-400-8-main-wheel-well-wiring-harness/history","analysis":"/api/acts/ad-beech-400-8-main-wheel-well-wiring-harness/analysis","conflicts":"/api/acts/ad-beech-400-8-main-wheel-well-wiring-harness/conflicts","importantCases":"/api/acts/ad-beech-400-8-main-wheel-well-wiring-harness/important-cases","documents":"/api/acts/ad-beech-400-8-main-wheel-well-wiring-harness/documents"}}