{"id":"F2006B04326","name":"AD/BELL 204/20 Amdt 1 - Emergency Exits - Modification and Inspection","slug":"ad-bell-204-20-amdt-1-emergency-exits-modification-and-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44141,"registerId":"commonwealth-F2006B04326-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 204/20 Amdt 1 - Emergency Exits - Modification and 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)  \nBell Helicopter Textron 204 Series Helicopters\n\nAD/BELL 204/20\n\nAmdt 1\n\n  \nEmergency Exits \\- Modification and Inspection 8/84\n\nApplicability: All model 204B helicopters.\n\nRequirement: PART 1\n\n    Install emergency exit decals and release handle covers in accordance with Bell\n\nS.B. 204-75-2 Rev. A.\n\n    b. Install spacers to the interior and exterior emergency escape release handle covers in accordance with Bell S.B. 204.77.2.\n\n    c. Provide and identify additional inspection holes in the lefthand and righthand passenger door assemblies in accordance with Bell S.B. 204-77-5.\n\n    d. Add a painted strip around the cylinder part of each emergency escape locking pin using white or other suitable colour.\n\nPART 2\n\nPerform the six month and annual inspections of the crew doors emergency ejection system and the passenger/cargo doors emergency escape panels in accordance with Bell T.B. 204-78-1.\n\nCompliance: 1. Unless already accomplished modify in accordance with requirement Part 1, Items a, b, c and d within 100 hours’ time in service after 31 August 1984.\n\n2. Unless already accomplished inspect in accordance with requirement Part 2 at the intervals prescribed in the requirement document after 31 August 1984.\n\nBackground: This Directive is amended to include additional modification and inspection requirements.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"The directive was amended to add further modification and inspection requirements to the existing AD (Background). It retains applicability to all model 204B helicopters but increases operators' obligations by specifying additional hardware/marking changes (Requirement Part 1) and recurring inspection duties (Requirement Part 2) with a 100‑hour compliance deadline and ongoing intervals (Compliance)."},"complexity_factors":["Applicability is narrow and explicit: all model 204B helicopters (Applicability).","Mandated work and inspections are defined by external manufacturer documents (Bell S.B. 204-75-2; S.B. 204-77-2; S.B. 204-77-5; Bell T.B. 204-78-1) — operators must obtain and follow those documents (Requirement Part 1/Part 2).","Fixed short-term compliance deadline for modifications (within 100 hours after 31 August 1984) and recurring inspection schedule (Compliance 1 and 2).","Technical maintenance work (installing parts, creating inspection holes, painting markings) requires qualified personnel, tools and access to spare parts.","Enforcement and compliance responsibility rests with operators/owners and is overseen by the Civil Aviation Safety Authority (Compliance/Background).","Amendment language adds requirements to an existing directive rather than creating a new regulatory framework (Background)."],"plain_english_summary":"_This airworthiness directive applies to all Bell 204B helicopters and requires operators to carry out specified modifications to emergency-exit hardware and markings and to conduct recurring inspections in line with Bell service and technical bulletins._ Operators/owners must complete the mandated modifications within 100 hours' time‑in‑service after 31 August 1984 and then perform six‑month and annual inspections at the intervals set out in the referenced documents (Requirement Part 1 and Part 2; Compliance)."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":true,"description":"The original directive (implied by 'This Directive is amended to include additional modification and inspection requirements') has expanded from its initial scope. The Background explicitly states this amendment adds extra requirements to what was originally issued. However, the scope remains tightly focused on emergency exit safety for the Bell 204B — it has not grown into broader regulatory territory."},"complexity_factors":["Short, focused scope: applies only to one helicopter model (Bell 204B)","Clear two-part structure: Part 1 (modifications) and Part 2 (inspections)","Minimal defined terms: only standard aviation references (S.B. = Service Bulletin, T.B. = Technical Bulletin)","Simple conditional logic: 'unless already accomplished' appears twice as the only condition","No cross-references to other legislation beyond the parent Civil Aviation Regulations 1998","Specific technical requirements reference external manufacturer documents (Bell service bulletins) rather than spelling out procedures in the text itself"],"plain_english_summary":"This CASA Airworthiness Directive (Amendment 1) mandates one-time modifications to Bell 204B emergency exits and doors plus recurring inspections to ensure escape systems function reliably. It targets owners and operators of Bell 204B helicopters in Australia.\n\nThe measures address hard-to-see/operationally problematic handles, hidden damage/corrosion, and inspection access; compliance was required within 100 flight hours after 31 August 1984, with specified 6‑month and annual inspection intervals."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-204-20-amdt-1-emergency-exits-modification-and-inspection","history":"/api/acts/ad-bell-204-20-amdt-1-emergency-exits-modification-and-inspection/history","analysis":"/api/acts/ad-bell-204-20-amdt-1-emergency-exits-modification-and-inspection/analysis","conflicts":"/api/acts/ad-bell-204-20-amdt-1-emergency-exits-modification-and-inspection/conflicts","importantCases":"/api/acts/ad-bell-204-20-amdt-1-emergency-exits-modification-and-inspection/important-cases","documents":"/api/acts/ad-bell-204-20-amdt-1-emergency-exits-modification-and-inspection/documents"}}