{"id":"F2006B04716","name":"AD/BELL 47/95 - Bogus Main Rotor Blades","slug":"ad-bell-47-95-bogus-main-rotor-blades","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44480,"registerId":"commonwealth-F2006B04716-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 47/95 - Bogus Main Rotor Blades","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 47/95 Bogus Main Rotor Blades 10/89\n\nDM\n\nApplicability: All models that are fitted with main rotor blade assemblies P/N 47-110-120-50 (wooden blades) that cannot be demonstrated as purchased directly from approved Bell Helicopter Textron supply outlets.\n\nRequirement: Inspect all applicable main rotor blades in accordance with the radiographic procedure detailed in Bell Operations Safety Notice 47-89-8.\n\nCompliance: Prior to further flight after 16 August 1989 and thereafter prior to installation on an aircraft.\n\nBackground: Contrary to the earlier view expressed in AAC Article 1-4 that these dangerous forgeries would not be used on an Australian aircraft, one blade set has been discovered and indications have been received of another set used in the recent past.\n\nFailure to heed both the Authority’s and Bell’s warnings has led to this Directive. Separation of a modified blade either on the ground or in flight could have catastrophic consequences for either the crew or ground personnel.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1872},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is the original airworthiness directive establishing safety requirements for counterfeit rotor blades. It does not represent an expansion from an earlier narrower scope; rather, it responds to initial discoveries of bogus parts in the Australian fleet."},"complexity_factors":["Single specific part number limitation (P/N 47-110-120-50)","External technical reference to Bell Operations Safety Notice 47-89-8 for inspection procedures","No conditional exceptions or nested provisions - straightforward mandate"],"plain_english_summary":"This Airworthiness Directive orders operators of Bell 47 helicopters with wooden main rotor blades (P/N 47-110-120-50) not bought from Bell‑approved suppliers to verify blade authenticity by radiographic inspection per Bell Operations Safety Notice 47‑89‑8 before any flight or installation. It responds to counterfeit, altered blades found in Australia that can separate or fail in flight, posing a lethal crash risk to crew and bystanders."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-47-95-bogus-main-rotor-blades","history":"/api/acts/ad-bell-47-95-bogus-main-rotor-blades/history","analysis":"/api/acts/ad-bell-47-95-bogus-main-rotor-blades/analysis","conflicts":"/api/acts/ad-bell-47-95-bogus-main-rotor-blades/conflicts","importantCases":"/api/acts/ad-bell-47-95-bogus-main-rotor-blades/important-cases","documents":"/api/acts/ad-bell-47-95-bogus-main-rotor-blades/documents"}}