{"id":"F2006B08415","name":"AD/CESSNA 550/10 Amdt 2 - MLG Torque Link Assembly","slug":"ad-cessna-550-10-amdt-2-mlg-torque-link-assembly","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115880,"registerId":"commonwealth-F2006B08415-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 550/10 Amdt 2 - MLG Torque Link Assembly","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)  \nCessna 550 (Citation II) Series Aeroplanes\n\nAD/CESSNA 550/10\n\nAmdt 2\n\n  \nMLG Torque Link Assembly 8/89\n\nApplicability: All model S550 series not modified in accordance with Cessna Service Bulletin SB S550-32-5.\n\nRequirement: Inspect and verify that the cotter pins securing the LH and RH main landing gear torque link connections are installed. If either cotter pin is broken, missing, or exhibits any evidence of being cut or sheared by the nut, the nut must be retorqued and a new cotter pin installed in accordance with Cessna MM 32-11-01 Pages 403, 404, and 405, prior to further flight.\n\nNote: FAA AD 88-13-03 R1 refers.\n\nCompliance: Prior to the first flight of the day.\n\nNote: The inspection may be accomplished by the Pilot in Command in which case AD reference shall be entered in a certification made on the Maintenance Release coincident with that for the Daily Inspection. Any rectification required must be carried out by an appropriately licensed person.\n\nBackground: This Amendment is raised to introduce a modification which constitutes terminating action for the inspection requirements.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment maintains the original scope of addressing main landing gear torque link safety. The addition of a terminating modification option does not expand the scope beyond the original safety concern; it simply provides an alternative compliance path."},"complexity_factors":["Single, specific mechanical component addressed (main landing gear torque link cotter pins)","Straightforward binary inspection requirement (check if pins are intact)","Clear compliance trigger (prior to first flight of the day)","Only 2 defined roles mentioned (Pilot in Command and appropriately licensed person)","Single cross-reference to FAA AD 88-13-03 R1","No nested exceptions or conditional logic chains","Prescriptive remedy with specific manual reference (Cessna MM 32-11-01 Pages 403-405)","Length: approximately 200 words"],"plain_english_summary":"This AD requires daily preflight visual checks of the cotter pins securing the left and right main landing gear torque link assemblies on Cessna 550 Citation II aircraft, grounding the airplane until any broken, missing or damaged pins are fixed by licensed maintenance following Cessna procedures. Pilots may perform and log the inspections; repairs must be done by qualified personnel.\n\nAn optional terminating modification is now allowed to eliminate the recurring inspections."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"The amendment retains the inspection requirement for unmodified S550 aircraft but introduces a terminating modification: aircraft modified per SB S550‑32‑5 are excluded from the recurring inspection. In effect, operators can eliminate the daily inspection burden by completing the SB (Applicability; Background)."},"complexity_factors":["Daily pre‑flight timing requirement (Compliance: Prior to the first flight of the day)","Pilot-in-command may perform inspection but repairs must be by a licensed person (Note)","Technical remedy prescribed to Cessna MM 32‑11‑01 (Requirement) — retorque and part replacement","Applicability carve‑out for aircraft modified per SB S550‑32‑5 (Applicability)","Existence of terminating action via Service Bulletin (Background) which changes ongoing burden","Recordkeeping entry on the Maintenance Release (Note)"],"plain_english_summary":"This AD requires a daily pre‑flight check of both main landing‑gear torque‑link cotter pins on Cessna S550 aircraft not modified by SB S550‑32‑5. If a pin is broken, missing or shows cutting/shearing by the nut, retorque the nut and install a new cotter pin per Cessna MM 32‑11‑01 before further flight.\n\nOperators pay for inspection and repairs; the pilot‑in‑command may perform and must record the inspection on the Maintenance Release, while corrective work must be done by a licensed person. The SB modification is terminating action for the inspection requirement."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-550-10-amdt-2-mlg-torque-link-assembly","history":"/api/acts/ad-cessna-550-10-amdt-2-mlg-torque-link-assembly/history","analysis":"/api/acts/ad-cessna-550-10-amdt-2-mlg-torque-link-assembly/analysis","conflicts":"/api/acts/ad-cessna-550-10-amdt-2-mlg-torque-link-assembly/conflicts","importantCases":"/api/acts/ad-cessna-550-10-amdt-2-mlg-torque-link-assembly/important-cases","documents":"/api/acts/ad-cessna-550-10-amdt-2-mlg-torque-link-assembly/documents"}}