{"id":"F2006B04215","name":"AD/BEECH 90/24 - Fuel Vent Heater Wiring - Inspection","slug":"ad-beech-90-24-fuel-vent-heater-wiring-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43971,"registerId":"commonwealth-F2006B04215-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 90/24 - Fuel Vent Heater Wiring - Inspection","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 90 and 65-90 (King Air) Series Aeroplanes\n\nAD/BEECH 90/24 Fuel Vent Heater Wiring \\- Inspection 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 that 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.\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 system.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2993},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow scope addressing fuel vent heater wiring safety in specific Beechcraft aircraft. The requirements have not expanded beyond the initial safety inspection and remediation instructions."},"complexity_factors":["Linear three-step structure with no conditional branches, exceptions, or defined terms","Single, clear applicability criterion limited to specific aircraft models with specific equipment","No cross-references to other legislative instruments or external standards","Plain instructional language with minimal technical jargon"],"plain_english_summary":"This Airworthiness Directive (AD) is a mandatory safety notice for owners and operators of Beechcraft 90 and 65-90 (King Air) aircraft equipped with electrical fuel vent heaters.\n\n**What you must do:**\n\n1. **Immediately disconnect power** to both fuel vent heaters and clearly label them as inoperative. If you use the circuit breaker to do this, you must add a physical clip or tie to prevent anyone accidentally resetting it.\n\n2. **Inspect the wiring** located in the wing area for any signs of rubbing or wear (called \"chafing\") that could damage the insulation.\n\n3. **Repair any issues** by either securing the wiring to prevent future rubbing or covering it with protective plastic sleeving **before** you reconnect the electrical power.\n\n**Why this matters:**\nDamaged electrical wires near fuel systems create a serious risk of fire or explosion. This directive ensures the wiring is safe before the heaters are operated again."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-90-24-fuel-vent-heater-wiring-inspection","history":"/api/acts/ad-beech-90-24-fuel-vent-heater-wiring-inspection/history","analysis":"/api/acts/ad-beech-90-24-fuel-vent-heater-wiring-inspection/analysis","conflicts":"/api/acts/ad-beech-90-24-fuel-vent-heater-wiring-inspection/conflicts","importantCases":"/api/acts/ad-beech-90-24-fuel-vent-heater-wiring-inspection/important-cases","documents":"/api/acts/ad-beech-90-24-fuel-vent-heater-wiring-inspection/documents"}}