{"id":"F2006B04439","name":"AD/BELL 206/124 Amdt 1 - Driveshaft Seal","slug":"ad-bell-206-124-amdt-1-driveshaft-seal","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44276,"registerId":"commonwealth-F2006B04439-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 206/124 Amdt 1 - Driveshaft Seal","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 Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters\n\nAD/BELL 206/124\n\nAmdt 1\n\n  \n\nDriveshaft Seal 2/93 TX\n\nApplicability: All Model 206A, 206BII, 206BIII, 206L-1, 206L-3 and Agusta Bell AB206A and AB206B Helicopters fitted with driveshafts listed in the requirement documents.\n\nRequirement: Action in accordance with:\n\n    Bell machines: Bell Helicopter Alert Service Bulletin 206-91-61 or 206L-91-74 as applicable; and\n\n    2. Agusta Bell machines: Agusta Bell Bollettino Tecnico 206-205 dated 20 July 1992.\n\nCompliance: As specified in the requirement documents with an effective date of 28 December 1992.\n\nBackground: Due to possible damage of the seal assembly P/N 206-040-276-101 or 206-040-272- 101, inspection of the driveshaft for grease leakage is required. Grease loss could result in driveshaft failure and loss of rotor drive. This amendment adds Agusta Bell machines to this Directive.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2005},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":true,"description":"Amendment 1 expands the directive's coverage to include Agusta Bell AB206A and AB206B helicopters, whereas the original directive applied only to Bell-manufactured aircraft."},"complexity_factors":["Incorporation by reference of external technical service bulletins","Specific part number identification requiring technical cross-referencing","Multi-manufacturer applicability requiring airframe verification"],"plain_english_summary":"This AD requires operators of certain Bell and Agusta Bell 206-series helicopters to inspect driveshaft seals for grease leakage per the manufacturers’ service bulletins to prevent loss of rotor drive. It affects aircraft fitted with the specified driveshaft seal assemblies and was amended to extend coverage to Agusta Bell–built helicopters as well."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-206-124-amdt-1-driveshaft-seal","history":"/api/acts/ad-bell-206-124-amdt-1-driveshaft-seal/history","analysis":"/api/acts/ad-bell-206-124-amdt-1-driveshaft-seal/analysis","conflicts":"/api/acts/ad-bell-206-124-amdt-1-driveshaft-seal/conflicts","importantCases":"/api/acts/ad-bell-206-124-amdt-1-driveshaft-seal/important-cases","documents":"/api/acts/ad-bell-206-124-amdt-1-driveshaft-seal/documents"}}