{"id":"F2006B04071","name":"AD/BEECH 56/9 - Fuel Vent Heater Wiring","slug":"ad-beech-56-9-fuel-vent-heater-wiring","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43724,"registerId":"commonwealth-F2006B04071-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 56/9 - Fuel Vent Heater 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 56TC (Turbo Baron) Series Aeroplanes\n\nAD/BEECH 56/9 Fuel Vent Heater Wiring 9/71\n\nApplicability: All models fitted with electrical fuel vent heaters.\n\nRequirement: 1. Disconnect the electrical power supply to both fuel vent heaters and install a warning placard or tag indicating system is inoperative.\n\nNote: If this is accomplished by tripping the appropriate circuit breaker, a clip must be placed over the shank of the circuit breaker to prevent inadvertent resetting.\n\n    2. Inspect the fuel vent heater electric wiring in the wing area for signs of chafing.\n\n    3. Either secure the wiring to prevent chafing or cover the wiring with plastic sleeving to prevent chafing. Beech SI No. 0562-355 also refers.\n\nCompliance: Para. 1 \\- Within 10 hours’ time in service after 30 September 1971.\n\nParas. 2 and 3 \\- Before reconnecting the fuel vent heaters to the electrical power supply.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2598},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope addressing a specific wiring safety defect in Beechcraft 56TC fuel vent heaters. It has not expanded beyond this original safety purpose."},"complexity_factors":["Single, specific aircraft type (Beechcraft 56TC)","Only three straightforward compliance requirements","No nested exceptions or conditional logic","Simple compliance timeframe (10 hours after specific date)","Minimal cross-referencing (only one service instruction reference)"],"plain_english_summary":"This mandatory Airworthiness Directive requires owners/operators of Beechcraft 56TC aircraft with electrical fuel vent heaters to immediately disconnect power to both heaters (within 10 flight hours after 30 Sep 1971), tag them inoperative, and prevent accidental reset. Wings wiring must be inspected for chafing and repaired or sleeved and secured before heaters are re-energised. It addresses the fire/explosion hazard from damaged wiring near fuel vents."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-56-9-fuel-vent-heater-wiring","history":"/api/acts/ad-beech-56-9-fuel-vent-heater-wiring/history","analysis":"/api/acts/ad-beech-56-9-fuel-vent-heater-wiring/analysis","conflicts":"/api/acts/ad-beech-56-9-fuel-vent-heater-wiring/conflicts","importantCases":"/api/acts/ad-beech-56-9-fuel-vent-heater-wiring/important-cases","documents":"/api/acts/ad-beech-56-9-fuel-vent-heater-wiring/documents"}}