{"id":"F2006B04380","name":"AD/BELL 205/44 - Cyclic Control Cylinder Assembly - Inspection of Piston Rods","slug":"ad-bell-205-44-cyclic-control-cylinder-assembly-inspection-of-piston-rods","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44205,"registerId":"commonwealth-F2006B04380-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 205/44 - Cyclic Control Cylinder Assembly - Inspection of Piston Rods","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\nBell Helicopter Textron 205 Series Helicopters\n\nAD/BELL 205/44 Cyclic Control Cylinder Assembly \\- Inspection of Piston Rods\n\n  \n6/79\n\nApplicability: All model 205A-1 with S/Nos. 30003 to 30039, 30050 to 30067, and 30078 to 30127, not modified in accordance with part II of Bell Alert Service Bulletin 205-79-7.\n\nNote: Helicopters modified to the dual hydraulic system kit in accordance with Bell SI 205-37 are exempt from the requirement of this AD.\n\nDocument: Bell Alert SB 205-79-7, Part 1, Daily Inspection and Hydraulic Research Textron SB FMTC 244, Part 1, Daily Inspection.\n\nCompliance: Within 10 hours time in service after 30 April 1979, and thereafter at periods not exceeding 10 hours, until modified in accordance with Part II of Bell Alert\n\nSB 205-79-7.\n\nBackground: The manufacturer has advised of the possibility of cracking of the piston rods on some cyclic control cylinder assemblies.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2298},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow focus on inspecting and repairing cyclic control cylinder piston rods in defined helicopter models. No expansion beyond the original safety defect correction."},"complexity_factors":["Applicability limited to three specific serial number ranges requiring cross-checking against aircraft registration","Mandatory compliance requires obtaining and following external technical documents (Bell Alert SB 205-79-7 and Hydraulic Research Textron SB FMTC 244)","Exemption clause dependent on verification of prior modifications (dual hydraulic system per Bell SI 205-37)","Time-based compliance metric ('time in service' flight hours) rather than calendar dates"],"plain_english_summary":"This Airworthiness Directive requires owners/operators of specified Bell 205A‑1 helicopters (listed serial ranges) to inspect cyclic control cylinder piston rods for cracks every 10 flight hours until the helicopter is permanently modified per Bell Service Bulletin 205‑79‑7. Compliance is not required if the helicopter already has the dual hydraulic modification (Bell 205‑37) or was repaired per Part II of the service bulletin. The measure prevents loss of primary flight control from rod fatigue."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-205-44-cyclic-control-cylinder-assembly-inspection-of-piston-rods","history":"/api/acts/ad-bell-205-44-cyclic-control-cylinder-assembly-inspection-of-piston-rods/history","analysis":"/api/acts/ad-bell-205-44-cyclic-control-cylinder-assembly-inspection-of-piston-rods/analysis","conflicts":"/api/acts/ad-bell-205-44-cyclic-control-cylinder-assembly-inspection-of-piston-rods/conflicts","importantCases":"/api/acts/ad-bell-205-44-cyclic-control-cylinder-assembly-inspection-of-piston-rods/important-cases","documents":"/api/acts/ad-bell-205-44-cyclic-control-cylinder-assembly-inspection-of-piston-rods/documents"}}