{"id":"F2006B04512","name":"AD/BELL 206/57 Amdt 2 - Horizontal Stabilizer","slug":"ad-bell-206-57-amdt-2-horizontal-stabilizer","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114216,"registerId":"commonwealth-F2006B04512-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 206/57 Amdt 2 - Horizontal Stabilizer","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\nBell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters\n\nAD/BELL 206/57\n\nAmdt 2\n\n  \nHorizontal Stabilizer 11/87\n\nApplicability: All models with horizontal stabilizers P/N 206-020-119 (all dash numbers) and P/N 206-020-123-3, -4, -3C2 and -4C2.\n\nRequirement: Visually inspect the horizontal stabilizer as described in Bell SB 206-01-73-7 (Revision E) Paragraph 2. Agusta SB 206-75 (Revision B) also refers.\n\nCompliance: At intervals not exceeding 25 hours time in service.\n\nNote: Stabilizers that have been repaired in accordance with the Requirement documents, still require the repetitive inspections in accordance with this Directive.\n\nBackground: This amendment corrects the part number applicability and, as a result of local defect experience, clarifies the repetitive inspection requirements for repaired stabilizers.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1585},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":true,"description":"Amendment 2 constitutes a technical correction to the part number applicability (adjusting which specific dash numbers are captured) and clarifies that repaired stabilizers remain within the scope of recurring inspection requirements. While the fundamental safety objective remains unchanged, the precise population of affected aircraft components has been adjusted and the obligation for repaired items has been made explicit rather than implied."},"complexity_factors":["Single, unambiguous compliance action (visual inspection)","Straightforward time-based trigger (25 hours time in service)","Limited cross-references (only to specific service bulletin revisions)","Narrow, explicitly enumerated applicability (four specific part number variations)","No nested exceptions, conditional clauses, or defined terms section"],"plain_english_summary":"This directive requires operators of Bell 206 and Agusta Bell 206 helicopters with specified horizontal stabilizer part numbers to perform recurring visual inspections following Bell SB 206-01-73-7 (Rev E) or Agusta SB 206-75 (Rev B).  \n\nInspections must be repeated at least every 25 hours time‑in‑service and continue even after approved repairs. The action corrects earlier part‑number errors and removes doubt about inspection requirements after defect reports from Australian operations."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-206-57-amdt-2-horizontal-stabilizer","history":"/api/acts/ad-bell-206-57-amdt-2-horizontal-stabilizer/history","analysis":"/api/acts/ad-bell-206-57-amdt-2-horizontal-stabilizer/analysis","conflicts":"/api/acts/ad-bell-206-57-amdt-2-horizontal-stabilizer/conflicts","importantCases":"/api/acts/ad-bell-206-57-amdt-2-horizontal-stabilizer/important-cases","documents":"/api/acts/ad-bell-206-57-amdt-2-horizontal-stabilizer/documents"}}