{"id":"F2006B04363","name":"AD/BELL 205/22 - Transmission Oil System - Inspection","slug":"ad-bell-205-22-transmission-oil-system-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44185,"registerId":"commonwealth-F2006B04363-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 205/22 - Transmission Oil System - 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\nBell Helicopter Textron 205 Series Helicopters\n\n \n\nAD/BELL 205/22 Transmission Oil System - Inspection 5/75\n\nApplicability: Model 205A and 205A-1. Document:  Bell SB 205-75-3.\n\nCompliance: Within 10 hours time in service after 20 May 1975 and thereafter at intervals not exceeding 50 hours time in service.\n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1357},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This appears to be the original 1975 airworthiness directive maintaining its initial scope of mandating transmission oil system inspections for specific helicopter models. No expansion of scope is evident."},"complexity_factors":["Single, unambiguous compliance requirement","Only one external reference (manufacturer service bulletin)","No nested exceptions or conditional logic","Minimal defined terms (only 'time in service')","Extremely short length (under 75 words of substantive content)"],"plain_english_summary":"**What this does:** This is a mandatory safety directive (called an Airworthiness Directive or AD) that requires owners and operators of specific Bell helicopters to inspect the transmission oil system.\n\n**Who it affects:** Anyone operating **Model 205A and 205A-1 helicopters** (military surplus or civilian versions of the famous \"Huey\" helicopter).\n\n**What must be done:**\n*   Inspect the transmission oil system following the manufacturer's instructions in **Bell Service Bulletin 205-75-3**\n*   **First inspection:** Within 10 hours of flying time after 20 May 1975\n*   **Ongoing inspections:** Every 50 hours of flying time thereafter\n\n**Why it matters:** The transmission (the gearbox that transfers power from the engine to the rotor blades) relies on oil for cooling and lubrication. This directive ensures potential oil leaks or system failures are caught before they cause catastrophic mechanical failure in flight."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-205-22-transmission-oil-system-inspection","history":"/api/acts/ad-bell-205-22-transmission-oil-system-inspection/history","analysis":"/api/acts/ad-bell-205-22-transmission-oil-system-inspection/analysis","conflicts":"/api/acts/ad-bell-205-22-transmission-oil-system-inspection/conflicts","importantCases":"/api/acts/ad-bell-205-22-transmission-oil-system-inspection/important-cases","documents":"/api/acts/ad-bell-205-22-transmission-oil-system-inspection/documents"}}