{"id":"F2006B04518","name":"AD/BELL 206/65 Amdt 2 - Main Rotor Pitch Link Clevises - Inspection","slug":"ad-bell-206-65-amdt-2-main-rotor-pitch-link-clevises-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114226,"registerId":"commonwealth-F2006B04518-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 206/65 Amdt 2 - Main Rotor Pitch Link Clevises - Inspection","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\nBell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters\n\nAD/BELL 206/65\n\nAmdt 2\n\n  \nMain Rotor Pitch Link Clevises \\- Inspection 7/78\n\nApplicability: All models 206A, 206B and AB206 series.\n\nRequirement: 1. Inspect with the aid of an approved dye penetrant method the entire threaded portion of the upper and lower clevises in pitch link assemblies P/Nos. 206-010- 330 (all dash numbers) and 206-010-342 (all dash numbers).\n\nNote: It is desirable to use a fluorescent dye penetrant for this inspection but if unavailable a colour contrast penetrant may be used. Particular attention is drawn to ANO 108.10, Appendix 1, Para. 2.5.\n\n2. Prior to reinstallation of pitch links, check the force required to move bearing P/N 206-010-469-1 in swashplate outer ring horns by installing NAS 1305-27D bolt through bearing and installing cotter pin in bolt. Bottom bolt head against bearing and hook spring balance through head of cotter pin. If force to move bearing exceeds ten pounds, replace bearing.\n\nCompliance: Within 100 hours time in service after 5 May 1975, and thereafter prior to each installation on an aircraft.\n\nBackground: AD/Agusta 206/56A.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is Amendment 2 of a long-standing airworthiness directive. The scope remains tightly focused on the original safety issue: inspecting specific pitch link clevises on Bell 206 helicopters for fatigue cracks. The amendment appears to maintain the same applicability and core requirements as the original 1978 directive (referenced as 7/78), with no indication of scope creep into unrelated systems or aircraft types."},"complexity_factors":["Short, single-purpose directive with only 2 main requirements","Specific part numbers provided (206-010-330, 206-010-342, 206-010-469-1) but limited to 3 references","One cross-reference to external standard (ANO 108.10, Appendix 1, Para. 2.5)","Clear compliance deadline (100 hours time in service after specific date)","Simple conditional logic: 'If force exceeds ten pounds, replace bearing'","No nested definitions or interpretation sections","Background reference to prior directive (AD/Agusta 206/56A) but no complex amendment history explained"],"plain_english_summary":"This mandatory airworthiness directive affects Bell 206 series (including Agusta Bell) helicopters and requires dye-penetrant inspection of the threaded portions of pitch‑link clevises plus a bearing movement test before reinstalling those parts (replace if >10 lb force). It aims to catch fatigue cracks and worn bearings that could cause loss of control. First inspection is within 100 flight hours after May 1975 and whenever the part is removed and reinstalled."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"The directive applies to all listed Bell/Agusta Bell 206A, 206B and AB206 models and specifies inspection and replacement actions for identified part numbers. The text does not state any expansion or narrowing of applicability compared with previous material; it references an earlier AD in Background but does not itself indicate a change in scope."},"complexity_factors":["Technical inspection method requirement: 'approved dye penetrant' with preference for fluorescent but allowance for colour‑contrast (Requirement 1; Note).","Specific parts identified by part numbers for clevises (P/N 206-010-330 and 206-010-342) and bearing (P/N 206-010-469-1) — precise part matching required (Applicability; Requirement 1 & 2).","Mechanical measurement procedure for bearing free‑movement: installation of NAS 1305-27D bolt, cotter pin and use of hook spring balance; fixed pass/fail threshold of ten pounds (Requirement 2).","Compliance timing is twofold: an initial deadline (within 100 hours TIS after 5 May 1975) and a recurring requirement 'prior to each installation' — creates ongoing compliance obligations (Compliance).","Reference to an external standard (ANO 108.10, Appendix 1, Para. 2.5) introduces cross‑document dependence for correct technique and interpretation (Requirement 1 Note).","Operational discretion and variability: terms like 'approved' and 'desirable' permit differing approved methods and judgement calls by inspectors or maintenance organisations (Requirement 1; Note).","Enforcement and administrative context: issued under Commonwealth CASA Part 39, so regulatory compliance and recordkeeping obligations follow airworthiness directive procedures (Header).","Potential for measurement variability and labour cost: the specified physical test (hook spring balance) can produce inconsistent results across technicians and tools, affecting replacement decisions (Requirement 2)."],"plain_english_summary":"This airworthiness directive requires operators of Bell/Agusta Bell 206A, 206B and AB206 helicopters to inspect specified main rotor pitch‑link clevises with an approved dye‑penetrant method and to check a specific swashplate bearing’s free‑movement before reinstalling pitch links. Inspections must be completed within 100 hours time‑in‑service after 5 May 1975 and before each subsequent installation. Operators must carry out and pay for the work; the Civil Aviation Safety Authority issues and enforces the directive under Part 39."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-206-65-amdt-2-main-rotor-pitch-link-clevises-inspection","history":"/api/acts/ad-bell-206-65-amdt-2-main-rotor-pitch-link-clevises-inspection/history","analysis":"/api/acts/ad-bell-206-65-amdt-2-main-rotor-pitch-link-clevises-inspection/analysis","conflicts":"/api/acts/ad-bell-206-65-amdt-2-main-rotor-pitch-link-clevises-inspection/conflicts","importantCases":"/api/acts/ad-bell-206-65-amdt-2-main-rotor-pitch-link-clevises-inspection/important-cases","documents":"/api/acts/ad-bell-206-65-amdt-2-main-rotor-pitch-link-clevises-inspection/documents"}}