{"id":"F2006B03694","name":"AD/BEECH 200/37 - Nacelle Fuel Tank Probe","slug":"ad-beech-200-37-nacelle-fuel-tank-probe","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43284,"registerId":"commonwealth-F2006B03694-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 200/37 - Nacelle Fuel Tank Probe","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 200 (Super King Air) Series Aeroplanes\n\nAD/BEECH 200/37 Nacelle Fuel Tank Probe 11/81\n\nApplicability: All models.\n\nRequirement: 1. Remove fuel quantity probe from L/H and R/H nacelle fuel tanks, wipe clean of all moisture and contaminants and wash thoroughly in clean kerosene.\n\n    2. Drain and flush L/H and R/H nacelle fuel tanks.\n\n    3. Replace fuel quantity probes and, on refuelling nacelle tanks, note that tank quantities match fuel quantity indicators.\n\nCompliance: For aircraft which have achieved 1900 hours time in service: within 100 hours time in service after 20 October 1981. For aircraft which have achieved less than 1900 hours time in service: before achieving 2000 hours time in service. Thereafter the requirement shall be carried out at intervals not exceeding 2000 hours time in service OR twelve months, whichever is the lesser.\n\nBackground: It has been found that water contamination of the nacelle fuel tank quantity probes will cause a high indication, even with empty tanks.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1743},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive remains tightly focused on its original purpose: remedying the specific safety defect of water-contaminated fuel probes in Beechcraft 200 aircraft. No mission creep or expansion into unrelated operational areas is evident."},"complexity_factors":["Dual compliance thresholds based on accumulated flight hours (1,900 vs 2,000 hours)","Recurring obligation with alternative measurement periods (flight hours OR calendar months)","Specific technical aviation maintenance terminology (nacelle, time in service)"],"plain_english_summary":"Owners and operators of Beechcraft 200 (Super King Air) must perform targeted maintenance on wing nacelle fuel probes and tanks to remove water/contaminants that can make gauges read falsely high. The procedure (remove, clean, drain/flush, reinstall and verify) corrects dangerous false-fuel indications that can cause fuel starvation.\n\nInitial compliance is time/flight-hour based, with repeat maintenance every 2,000 flight hours or 12 months."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-200-37-nacelle-fuel-tank-probe","history":"/api/acts/ad-beech-200-37-nacelle-fuel-tank-probe/history","analysis":"/api/acts/ad-beech-200-37-nacelle-fuel-tank-probe/analysis","conflicts":"/api/acts/ad-beech-200-37-nacelle-fuel-tank-probe/conflicts","importantCases":"/api/acts/ad-beech-200-37-nacelle-fuel-tank-probe/important-cases","documents":"/api/acts/ad-beech-200-37-nacelle-fuel-tank-probe/documents"}}