{"id":"F2006B10609","name":"AD/HU 269/47 - Main Rotor Blade Root Fitting Bolts - Main Rotor Blade Damper Bolts - Inspection","slug":"ad-hu-269-47-main-rotor-blade-root-fitting-bolts-main-rotor-blade-damper-bolts-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":116481,"registerId":"commonwealth-F2006B10609-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/HU 269/47 - Main Rotor Blade Root Fitting Bolts - Main Rotor Blade Damper Bolts - 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\n![](image.001.png)  Schweizer (Hughes) 269 Series Helicopters\n\n \n\nAD/HU 269/47 Main Rotor Blade Root Fitting Bolts - Main\n\nRotor Blade Damper Bolts - Inspection\n\n\n8/74\n\n \n\nApplicability: All models with P/No. 269B1145 main rotor blades and/or P/No. 269A1222 or 269A1927 main rotor blade dampers.\n\n \n\nDocument: Hughes SIN N-119.\n\n \n\nCompliance: Within 50 hours time in service after 30 August 1974.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1686},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow scope regarding bolt inspections on specific helicopter models. There is no evidence of scope creep or expansion beyond the original safety intent."},"complexity_factors":["Very short and targeted scope affecting only specific part numbers","Single compliance action required (inspection per referenced document)","Clear applicability criteria limited to three specific part numbers","Simple chronological deadline with no conditional triggers","No exemptions, exceptions, or alternative compliance methods stated"],"plain_english_summary":"Owners and operators of Schweizer (Hughes) 269 series helicopters fitted with specified main rotor blades or dampers must perform mandatory inspections of the main rotor blade root‑fitting and damper bolts per Hughes Service Instruction N‑119.  \n\nThe check must be done within 50 flight hours after August 30, 1974. It addresses critical fasteners whose failure could permit in‑flight blade separation and catastrophic loss."}},"importantCases":[],"_links":{"self":"/api/acts/ad-hu-269-47-main-rotor-blade-root-fitting-bolts-main-rotor-blade-damper-bolts-inspection","history":"/api/acts/ad-hu-269-47-main-rotor-blade-root-fitting-bolts-main-rotor-blade-damper-bolts-inspection/history","analysis":"/api/acts/ad-hu-269-47-main-rotor-blade-root-fitting-bolts-main-rotor-blade-damper-bolts-inspection/analysis","conflicts":"/api/acts/ad-hu-269-47-main-rotor-blade-root-fitting-bolts-main-rotor-blade-damper-bolts-inspection/conflicts","importantCases":"/api/acts/ad-hu-269-47-main-rotor-blade-root-fitting-bolts-main-rotor-blade-damper-bolts-inspection/important-cases","documents":"/api/acts/ad-hu-269-47-main-rotor-blade-root-fitting-bolts-main-rotor-blade-damper-bolts-inspection/documents"}}