{"id":"F2006B04393","name":"AD/BELL 205/57 - Bogus Tension Torsion Straps","slug":"ad-bell-205-57-bogus-tension-torsion-straps","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44218,"registerId":"commonwealth-F2006B04393-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 205/57 - Bogus Tension Torsion Straps","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\nBell Helicopter Textron 205 Series Helicopters\n\n \n\nAD/BELL 205/57 Bogus Tension Torsion Straps 13/89\n\nTX\n\n \n\nApplicability: Models 205A and 205A-1.\n\n \n\nRequirement: Action in accordance with BHT ASB 205-89-33 Rev A. Compliance:  Prior to further flight after 3 November 1989.\n\nBackground: The T.T. straps listed are of unknown quality having been produced without either the aircraft manufacturer’s approval or a FAA PMA.\n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1844},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This airworthiness directive remains narrowly targeted at the specific safety issue of unapproved tension torsion straps on Bell 205A series helicopters. It has not expanded beyond its original technical safety purpose."},"complexity_factors":["Single operative requirement but relies on undefined technical aviation terms (tension torsion straps, ASB—Alert Service Bulletin)","External cross-reference to manufacturer document (BHT ASB 205-89-33 Rev A) without reproducing the required actions","Reference to foreign regulatory certification (FAA PMA—Parts Manufacturer Approval)"],"plain_english_summary":"**What this does:**\nBans the use of counterfeit helicopter parts—specifically fake \"tension torsion straps\"—on Bell 205A and 205A-1 helicopters.\n\n**Who it affects:**\nOwners and operators of these specific Bell helicopter models.\n\n**What must be done:**\nBefore flying these helicopters after 3 November 1989, operators must follow the manufacturer's safety bulletin (BHT ASB 205-89-33 Rev A) to inspect and replace the faulty parts.\n\n**Why it matters:**\nThe straps are counterfeit aircraft parts made without proper safety approval (FAA PMA—Federal Aviation Administration Parts Manufacturer Approval). **Tension torsion straps** are critical components that absorb flight loads in the helicopter's rotor system; fake ones could snap in flight, causing catastrophic failure.\n\n**In simple terms:**\nIf your Bell 205 helicopter has dodgy, unapproved straps installed, you cannot fly until you've fixed the problem according to the manufacturer's instructions."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-205-57-bogus-tension-torsion-straps","history":"/api/acts/ad-bell-205-57-bogus-tension-torsion-straps/history","analysis":"/api/acts/ad-bell-205-57-bogus-tension-torsion-straps/analysis","conflicts":"/api/acts/ad-bell-205-57-bogus-tension-torsion-straps/conflicts","importantCases":"/api/acts/ad-bell-205-57-bogus-tension-torsion-straps/important-cases","documents":"/api/acts/ad-bell-205-57-bogus-tension-torsion-straps/documents"}}