{"id":"F2006B04708","name":"AD/BELL 47/86 Amdt 2 - Consolidation of Certain Early Airworthiness Directives - Older Model Bell 47","slug":"ad-bell-47-86-amdt-2-consolidation-of-certain-early-airworthiness-directives-older-model-bell-47","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44472,"registerId":"commonwealth-F2006B04708-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 47/86 Amdt 2 - Consolidation of Certain Early Airworthiness Directives - Older Model Bell 47","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 47 (All Variants) Series Helicopters\n\nAD/BELL 47/86\n\nAmdt 2\n\n  \n\nConsolidation of Certain Early Airworthiness Directives - Older Model Bell 47\n\n  \n3/87\n\nApplicability: All model Bell 47 Series.\n\nRequirement: As applicable to the particular helicopter, comply with the following: Bell 47 Service Bulletins:\n\n64, 69, 71, 72, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 86, 87, 90, 96, 97, 98, 99,\n\n103, 104, 106, 108, 113, 114, 116, 118, 119, 120, 121, 124, 126, 127, 129, 130, 132,\n\n136, 137, 140, 141, 144, 145.\n\nFAA ADs: 73-19-4, 80-23-02 Amdt 39-3971 and 85-15-04.\n\nCompliance: Prior to issue of Certificate of Airworthiness.\n\nBackground: To reduce operators administrative work load, early modifications and one-time inspections to older model 47 helicopters have been consolidated above. This AD has been amended to include SB 127 and FAA ADs applicable to cancelled ADs for which a Service Bulletin was not referenced.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":6,"scope_assessment":{"changed":true,"description":"The amendment expanded the consolidation to include Service Bulletin 127 and additional FAA airworthiness directives that applied to cancelled ADs (Background). Mechanically, this increases the set of mandatory one‑time inspections/modifications covered by the AD compared with the earlier consolidation."},"complexity_factors":["Large number of external documents referenced (many Bell Service Bulletins listed) — increases research and compliance coordination (Requirement).","Cross‑jurisdictional references to FAA ADs create dependency on foreign directives and possible differences in applicability (Requirement; FAA ADs line).","\"As applicable\" wording requires operators to determine which bulletins apply to each airframe, creating judgment calls and record‑keeping burden (Applicability; Requirement).","Single hard compliance milestone — completion before Certificate of Airworthiness — concentrates scheduling and workshop capacity pressure (Compliance).","Amendment added SB 127 and FAA ADs for cancelled ADs, broadening the set of required actions and retroactive coverage risk (Background).","The AD consolidates prior items but does not include technical instructions here, forcing reliance on multiple separate SBs for procedural detail (Requirement)."],"plain_english_summary":"This airworthiness directive consolidates many early mandatory actions for older Bell 47 helicopters by referencing applicable Bell Service Bulletins and related FAA ADs. Operators must complete the listed service bulletins (as applicable) before a Certificate of Airworthiness is issued. It affects owners/operators who bear the cost and effort of one‑time inspections or modifications, and is enforced by the Civil Aviation Safety Authority (Compliance: \"Prior to issue of Certificate of Airworthiness\")."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This amendment stays true to the original purpose of consolidating older airworthiness directives for Bell 47 helicopters. Amendment 2 simply adds Service Bulletin 127 and references to FAA ADs that replaced cancelled directives where no service bulletin existed. The scope remains administrative consolidation for vintage helicopter safety."},"complexity_factors":["Short document (approximately 200 words)","No defined terms section — relies on external references to service bulletins and FAA ADs","Simple structure: applicability, requirement, compliance deadline, background","No nested conditional logic or exceptions","Cross-references exist but are presented as a simple list rather than integrated legal provisions","Single compliance trigger (prior to Certificate of Airworthiness issue)"],"plain_english_summary":"This CASA Airworthiness Directive consolidates decades of scattered safety fixes and inspections for Bell 47 helicopters into a single mandatory compliance requirement. It affects any owner, operator, or maintainer of Bell 47s in Australia who must demonstrate completion of the required modifications and inspections before receiving a Certificate of Airworthiness.  \n\nBy streamlining dozens of older service bulletins and FAA orders into one directive, it reduces administrative burden while ensuring these vintage helicopters meet current safety standards."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-47-86-amdt-2-consolidation-of-certain-early-airworthiness-directives-older-model-bell-47","history":"/api/acts/ad-bell-47-86-amdt-2-consolidation-of-certain-early-airworthiness-directives-older-model-bell-47/history","analysis":"/api/acts/ad-bell-47-86-amdt-2-consolidation-of-certain-early-airworthiness-directives-older-model-bell-47/analysis","conflicts":"/api/acts/ad-bell-47-86-amdt-2-consolidation-of-certain-early-airworthiness-directives-older-model-bell-47/conflicts","importantCases":"/api/acts/ad-bell-47-86-amdt-2-consolidation-of-certain-early-airworthiness-directives-older-model-bell-47/important-cases","documents":"/api/acts/ad-bell-47-86-amdt-2-consolidation-of-certain-early-airworthiness-directives-older-model-bell-47/documents"}}