{"id":"F2013L00104","name":"AD/CESSNA 400/119 - Airframe Life Limitation","slug":"ad-cessna-400-119-airframe-life-limitation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":126961,"registerId":"commonwealth-F2013L00104-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Cessna 400 Series Aeroplanes","sectionType":"division","heading":"Cessna 400 Series Aeroplanes","content":"### Cessna 400 Series Aeroplanes\n\n| AD/CESSNA 400/119 | Airframe Life Limitation | 2/2013 |\n| ----------------- | ------------------------ | ------ |\n\n| Applicability: | Cessna 441 Models, all serial numbers.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | 1. Retire Airframe from service before exceeding 22,500 hours time in service; or2. Adopt a CASA Approved inspection program to allow operation beyond 22,500 hours time in service.Note 1: Substantial modification to the airframe may be required before an appropriate inspection program is approved by the Authority.Note 2: In developing an inspection program consideration must be given to the principles of damage tolerance. A damage tolerant analysis of critical sites is required such that inspections include probable locations of damage due to fatigue, corrosion or accidental damage per FAR 23.573(b). For guidance on this aspect refer to FAA Advisory Circular 23-13A “Fatigue, Failsafe and Damage Tolerance Evaluation of Metallic Structure for Normal, Utility, Aerobatic and Commuter Category Airplanes”. |\n| Compliance:    | Forthwith.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |\n|                | This Airworthiness Directive becomes effective on 30 January 2013.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |\n| Background:    | Cessna have published a limit of validity to Supplemental Inspections. Operation beyond the limit of validity requires fatigue life justification.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |\n\n![](image.001.png)  \nRick Leeds  \nDelegate of the Civil Aviation Safety Authority\n\n22 January 2013","sortOrder":0},{"sectionNumber":"AD/CESSNA 400/119","sectionType":"part","heading":"AD/CESSNA 400/119","content":"## AD/CESSNA 400/119","sortOrder":1},{"sectionNumber":"Airframe Life Limitation","sectionType":"part","heading":"Airframe Life Limitation","content":"## Airframe Life Limitation","sortOrder":2},{"sectionNumber":"2/2013","sectionType":"part","heading":"2/2013","content":"## 2/2013","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope: establishing a life limit for Cessna 441 airframes. It has not expanded beyond this specific safety purpose."},"complexity_factors":["Short, single-purpose directive with only 2 main requirements","No defined terms section — relies on standard aviation terminology","Single cross-reference to external FAA guidance document (AC 23-13A)","Simple conditional structure: either retire at 22,500 hours OR adopt approved program","No nested exceptions or complex compliance timelines","Repetitive formatting artifacts in source text (duplicated headings) do not affect legal complexity"],"plain_english_summary":"This CASA Airworthiness Directive requires all Cessna 441 Conquest aircraft to be retired at 22,500 flight hours unless the owner obtains CASA approval for a special inspection/damage-tolerance program. Issued to prevent fatigue-related structural failure, the AD forces either permanent removal from service or rigorous engineering, modification and inspection measures to prove continued safety. Effective 30 January 2013."},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":false,"description":"The AD implements the manufacturer’s published limit of validity for supplemental inspections by imposing a 22,500 hour retirement limit or requiring CASA‑approved fatigue‑life justification to exceed it. It does not expand applicability beyond Cessna’s stated limit; it formalises that limit into regulatory requirement and specifies engineering and approval steps for extensions (Requirement; Background; Notes 1–2)."},"complexity_factors":["Two compliance paths: mandatory retirement at 22,500 TIS or development of a CASA‑approved inspection program (Requirement)","Regulatory discretion: CASA must approve inspection programs, creating case‑by‑case decisionmaking (Requirement)","Technical engineering burden: requires fatigue life justification and damage‑tolerance analysis of critical sites (Note 2; references FAR 23.573(b) and FAA AC 23‑13A)","Potential for substantial modification of the airframe before approval (Note 1)","Broad applicability: all serial numbers of Cessna 441 models, increasing administrative and fleet planning complexity (Applicability)","Immediate compliance/effective date (Forthwith; effective 30 January 2013) compresses timelines for operators","Dependence on external technical guidance (FAA Advisory Circular) adds cross‑jurisdictional compliance considerations"],"plain_english_summary":"This Airworthiness Directive requires all Cessna 441 airframes to be retired before 22,500 hours time‑in‑service unless the owner/operator puts in place a CASA‑approved inspection program to lawfully operate beyond that limit. CASA must approve any program; the AD is effective immediately (Requirement; Compliance). It implements Cessna’s published limit of validity for supplemental inspections and demands fatigue‑life justification, possibly substantial airframe modification and a damage‑tolerance analysis per FAR 23.573(b) and FAA AC 23‑13A (Notes 1–2)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-400-119-airframe-life-limitation","history":"/api/acts/ad-cessna-400-119-airframe-life-limitation/history","analysis":"/api/acts/ad-cessna-400-119-airframe-life-limitation/analysis","conflicts":"/api/acts/ad-cessna-400-119-airframe-life-limitation/conflicts","importantCases":"/api/acts/ad-cessna-400-119-airframe-life-limitation/important-cases","documents":"/api/acts/ad-cessna-400-119-airframe-life-limitation/documents"}}