{"id":"F2006B08425","name":"AD/CESSNA 550/2 - Landing Gear - Structural Life Limitation","slug":"ad-cessna-550-2-landing-gear-structural-life-limitation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115901,"registerId":"commonwealth-F2006B08425-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 550/2 - Landing Gear - Structural Life Limitation","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 550/2 Landing Gear \\- Structural Life Limitation 2/82\n\nApplicability: All models 550 series aeroplanes.\n\nRequirement: All landing gear components listed in the Component Time Limits Schedule, Chapter 5 of the Cessna Citation II Maintenance Manual dated January 1978, Revision 6 dated 15 December 1980, shall be retired from service at or before the times shown therein.\n\nNote: Where reference is made in the Schedule to FAA and CAA certified aeroplanes, for the purposes of this Directive the component lives may be taken as the lives applicable to FAA certified aeroplanes.\n\nEffective: Forthwith.\n\nBackground: This Directive formally promulgates the landing gear component lives determined by the manufacturer.\n\nNote: ANOs Part 105 “NOT GREATER THAN 5700 KG” refer to CESSNA 551 (CITATION II) SERIES AEROPLANES.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1933},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope. It remains focused solely on mandating retirement times for landing gear components based on manufacturer-specified life limits, which aligns with its stated purpose of formalizing those manufacturer determinations."},"complexity_factors":["Single, straightforward requirement without exceptions or conditional clauses","Incorporates technical data by reference to an external manual rather than reproducing specifications in the text","Minimal cross-referencing (only to FAA certification standards for determining applicable life limits)","Very short document with plain applicability statement covering all models in the series"],"plain_english_summary":"This AD imposes legal retirement limits on landing‑gear components for Cessna 550 (Citation II) aircraft registered in Australia, requiring owners/operators to permanently remove parts once they reach the flight‑hour or landing‑cycle limits in the aircraft’s Maintenance Manual. Where the manual gives different certification authority limits, the FAA (US) life limits apply. It enforces the manufacturer’s replacement schedule to reduce risk of landing‑gear failure."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-550-2-landing-gear-structural-life-limitation","history":"/api/acts/ad-cessna-550-2-landing-gear-structural-life-limitation/history","analysis":"/api/acts/ad-cessna-550-2-landing-gear-structural-life-limitation/analysis","conflicts":"/api/acts/ad-cessna-550-2-landing-gear-structural-life-limitation/conflicts","importantCases":"/api/acts/ad-cessna-550-2-landing-gear-structural-life-limitation/important-cases","documents":"/api/acts/ad-cessna-550-2-landing-gear-structural-life-limitation/documents"}}