{"id":"F2006B04688","name":"AD/BELL 47/34 - Stewart Warner 439212 Fuel Quantity Gauge Unit - Modification or Replacement","slug":"ad-bell-47-34-stewart-warner-439212-fuel-quantity-gauge-unit-modification-or-replacement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44440,"registerId":"commonwealth-F2006B04688-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 47/34 - Stewart Warner 439212 Fuel Quantity Gauge Unit - Modification or Replacement","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Bell Helicopter Textron 47 (All Variants) Series Helicopters\n\n \n\n# AD/BELL 47/34 Stewart Warner 439212 Fuel Quantity Gauge\n\nUnit - Modification or Replacement\n\nApplicability: Model 47G-3-B1.\n\n# 3/63\n\n \n\nRequirement: To reduce fire hazard, install a vapour proof type fuel quantity gauge unit acceptable to the Secretary, or modify the Stewart Warner type 439212 fuel quantity gauge tank unit and ensure that the connecting lead is replaced with multi-strand wire correctly terminated. Secure fuel quantity gauge tank unit in a manner that will prevent loosening due to vibration.\n\n \n\nCompliance: Forthwith.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1264},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive remains tightly focused on its original purpose: addressing a specific fire safety defect in a specific aircraft part. There is no indication of scope expansion beyond the original intent to mitigate fuel gauge-related fire hazards in this helicopter series."},"complexity_factors":["Targets only one specific helicopter model (Bell 47G-3-B1)","Simple binary compliance choice (replace OR modify)","No defined terms, interpretation sections, or cross-references to other legislation","Single requirement focused on one mechanical component","Immediate compliance deadline with no conditional timing or phased implementation"],"plain_english_summary":"**What this does:** This directive requires owners or operators of specific Bell 47 helicopters (Model 47G-3-B1) to fix a fire hazard linked to the fuel quantity gauge system.\n\n**Who it affects:** Anyone operating or maintaining a Bell 47G-3-B1 helicopter equipped with a Stewart Warner type 439212 fuel gauge.\n\n**What you must do:** You have two options to comply:\n*   **Option 1:** Replace the existing fuel gauge with a \"vapour-proof\" type that is approved by the Secretary (the relevant CASA official); **or**\n*   **Option 2:** Modify the existing Stewart Warner gauge by replacing its connecting lead with multi-strand wire that is correctly terminated, and secure the gauge unit so it cannot loosen due to vibration.\n\n**When:** Immediately (the directive uses the term \"forthwith,\" meaning without delay)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-47-34-stewart-warner-439212-fuel-quantity-gauge-unit-modification-or-replacement","history":"/api/acts/ad-bell-47-34-stewart-warner-439212-fuel-quantity-gauge-unit-modification-or-replacement/history","analysis":"/api/acts/ad-bell-47-34-stewart-warner-439212-fuel-quantity-gauge-unit-modification-or-replacement/analysis","conflicts":"/api/acts/ad-bell-47-34-stewart-warner-439212-fuel-quantity-gauge-unit-modification-or-replacement/conflicts","importantCases":"/api/acts/ad-bell-47-34-stewart-warner-439212-fuel-quantity-gauge-unit-modification-or-replacement/important-cases","documents":"/api/acts/ad-bell-47-34-stewart-warner-439212-fuel-quantity-gauge-unit-modification-or-replacement/documents"}}