{"id":"F2006B11082","name":"AD/LA-4/8 - Fuel Cell Capacity and Security Inspection","slug":"ad-la-4-8-fuel-cell-capacity-and-security-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56739,"registerId":"commonwealth-F2006B11082-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/LA-4/8 - Fuel Cell Capacity and Security Inspection","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)  Consolidated Aeronautics, Colonial and LA-4 Series Aeroplanes\n\n \n\nAD/LA-4/8 Fuel Cell Capacity and Security Inspection 9/73\n\nApplicability: All Colonial C-1 and C-2 and Lake LA-4 and LA-4-200 models, prior to S/No. 587 not incorporating Consolidated Aeronautics of SL L-49.\n\n \n\nDocument: Consolidated Aeronautics SL L-47A.\n\n \n\nCompliance: Step 1: Before further flight after 17 September 1973.\n\n \n\nStep 2: Within 25 hours time in service after 17 September 1973 and thereafter at intervals not exceeding 100 hours time in service.\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\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1909},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This maintains its original 1973 scope as a targeted safety inspection for specific aircraft fuel systems. No evidence of scope expansion beyond the initial airworthiness concern."},"complexity_factors":["Single-issue directive with one specific maintenance task","Limited applicability to clearly defined aircraft models and serial number range","Simple two-step compliance timeline (one-time immediate action plus recurring interval)","Only one external reference (Service Letter L-47A)","No conditional exceptions, definitions section, or nested provisions"],"plain_english_summary":"This Airworthiness Directive requires immediate and recurring inspections of flexible fuel cells on Colonial C‑1/C‑2 and Lake LA‑4/LA‑4‑200 aircraft (serials before 587 not modified per CASL L‑49) to confirm tanks hold correct capacity and are securely attached.  \n\nCompliance is required before next flight after 17 Sept 1973, within 25 flight hours, and every 100 flight hours thereafter to prevent fuel starvation or fire."}},"importantCases":[],"_links":{"self":"/api/acts/ad-la-4-8-fuel-cell-capacity-and-security-inspection","history":"/api/acts/ad-la-4-8-fuel-cell-capacity-and-security-inspection/history","analysis":"/api/acts/ad-la-4-8-fuel-cell-capacity-and-security-inspection/analysis","conflicts":"/api/acts/ad-la-4-8-fuel-cell-capacity-and-security-inspection/conflicts","importantCases":"/api/acts/ad-la-4-8-fuel-cell-capacity-and-security-inspection/important-cases","documents":"/api/acts/ad-la-4-8-fuel-cell-capacity-and-security-inspection/documents"}}