{"id":"F2006B04424","name":"AD/BELL 206/110 - Tail Rotor Pitch Links","slug":"ad-bell-206-110-tail-rotor-pitch-links","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44249,"registerId":"commonwealth-F2006B04424-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 206/110 - Tail Rotor Pitch Links","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 Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters\n\n \n\nAD/BELL 206/110 Tail Rotor Pitch Links  13/87 DM\n\nApplicability: All model Bell 206A/B, 206BIII, 206L, L1 and L3 fitted with P/N 206-010-793-101 or 206-010-792-105 tail rotor pitch links.\n\n \n\nRequirement: Inspect in accordance with Bell Helicopter Alert Service Bulletin 206-87-39 or 206L- 87-48, as applicable.\n\n \n\nCompliance: Unless already accomplished within 25 hours time in service from 15 October 1987 or before 30 November 1987 whichever occurs first.\n\n \n\nBackground: Four tail rotor pitch links P/N 206-010-793-101 have been reported cracked due to stress corrosion in the area that houses the spherical bearing, requiring a one time inspection of the pitch link.\n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2960},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive maintains a narrow, targeted scope focused solely on the specific safety defect (stress corrosion in tail rotor pitch links). It does not expand beyond the original safety-critical inspection requirement for the identified aircraft models."},"complexity_factors":["Technical aerospace terminology requiring specialized knowledge (part numbers, service bulletins, time in service)","Conditional compliance clause ('unless already accomplished')","Cross-reference to external technical documents for actual inspection procedures","Specific applicability determined by aircraft model and part number combinations"],"plain_english_summary":"**What this does**\n\nThis airworthiness directive orders a one-time safety inspection of tail rotor pitch links—critical components that control the helicopter's tail rotor—on specific Bell helicopter models. The inspection checks for stress corrosion cracking in the spherical bearing housing.\n\n**Who it affects**\n\nOwners and operators of Bell 206A/B, 206BIII, 206L, L1, and L3 helicopters, but **only** if fitted with specific part numbers: P/N 206-010-793-101 or P/N 206-010-792-105.\n\n**What must be done**\n\nConduct an inspection following the procedures in Bell Helicopter Alert Service Bulletin 206-87-39 or 206L-87-48 (depending on the helicopter model). This must be done within a specific flight hour limit or by a set calendar deadline, whichever comes first—unless the inspection was already completed.\n\n**Why this matters**\n\nFour pitch links were found cracked due to stress corrosion. A failed pitch link could cause loss of tail rotor control, potentially leading to catastrophic loss of the aircraft and lives."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-206-110-tail-rotor-pitch-links","history":"/api/acts/ad-bell-206-110-tail-rotor-pitch-links/history","analysis":"/api/acts/ad-bell-206-110-tail-rotor-pitch-links/analysis","conflicts":"/api/acts/ad-bell-206-110-tail-rotor-pitch-links/conflicts","importantCases":"/api/acts/ad-bell-206-110-tail-rotor-pitch-links/important-cases","documents":"/api/acts/ad-bell-206-110-tail-rotor-pitch-links/documents"}}