{"id":"F2006B04567","name":"AD/BELL 212/36 Amdt 1 - Emergency Flotation System and Squib Valve","slug":"ad-bell-212-36-amdt-1-emergency-flotation-system-and-squib-valve","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114297,"registerId":"commonwealth-F2006B04567-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 212/36 Amdt 1 - Emergency Flotation System and Squib Valve","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)  \nBell Helicopter Textron 212 Series Helicopters\n\nAD/BELL 212/36\n\nAmdt 1\n\n  \n\nEmergency Flotation System and Squib Valve\n\n  \n5/87\n\nApplicability: All model 212 helicopters S/N 30504 to 31277 and 32101 to 32142 fitted with\n\nEmergency Flotation Kit P/No 212- 706-042-1, -3, -101, -103, -105. Requirement: Action in accordance with Bell Alert Service Bulletin No 212-87-42.\n\nCompliance: Within 500 hours time in service after 7 May 1987 or before 31 July 1987 whichever occurs first.\n\nNote: Compliance with the previous issue of this Directive does not constitute compliance with this issue.\n\nBackground: The failure of an emergency flotation squib valve assembly has shown the possibility of a valve assembly failure during the pressure reservoir discharge. This Directive has been amended to conform with the latest Bell Alert Service Bulletin.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1906},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive remains tightly scoped to its original purpose: rectifying a specific safety defect in specific helicopter models. The amendment updates the technical requirements to align with the manufacturer's latest service bulletin, which is standard practice for aviation safety instruments and does not represent scope creep."},"complexity_factors":["Conditional compliance deadline requiring calculation (500 hours TIS after specific date OR before fixed date, whichever first)","Narrow applicability limited to specific aircraft serial number ranges and specific part numbers","Reference to external technical document (Bell Alert Service Bulletin No 212-87-42) which contains the actual procedural requirements","Technical aviation terminology requiring explanation (squib valve, time in service, pressure reservoir discharge)"],"plain_english_summary":"This CASA Airworthiness Directive orders owners of specified Bell 212 helicopters (S/Ns 30504–31277 and 32101–32142) fitted with certain Emergency Flotation Kit part numbers to inspect/replace a potentially failing squib valve per Bell Alert Service Bulletin No. 212‑87‑42. If the squib fails, flotation may not inflate and the helicopter could sink in a water landing. Work must be done within the stated flight‑hour/date compliance window; prior compliance must be repeated under this amendment."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-212-36-amdt-1-emergency-flotation-system-and-squib-valve","history":"/api/acts/ad-bell-212-36-amdt-1-emergency-flotation-system-and-squib-valve/history","analysis":"/api/acts/ad-bell-212-36-amdt-1-emergency-flotation-system-and-squib-valve/analysis","conflicts":"/api/acts/ad-bell-212-36-amdt-1-emergency-flotation-system-and-squib-valve/conflicts","importantCases":"/api/acts/ad-bell-212-36-amdt-1-emergency-flotation-system-and-squib-valve/important-cases","documents":"/api/acts/ad-bell-212-36-amdt-1-emergency-flotation-system-and-squib-valve/documents"}}