{"id":"F2006B07810","name":"Airworthiness Directives 2004 - Revocation and Remaking - Cessna 550 (Citation II) Series Aeroplanes","slug":"airworthiness-directives-2004-revocation-and-remaking-cessna-550-citation-ii-series-aeroplanes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50675,"registerId":"commonwealth-F2006B07810-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"Airworthiness Directives 2004 - Revocation and Remaking - Cessna 550 (Citation II) Series Aeroplanes","content":"Airworthiness Directives 2004\n\nI, DAVID ALAN VILLIERS, delegate of the Civil Aviation Safety\n\nAuthority, acting under subregulation 39.001 (1) of the Civil\n\nAviation Safety Regulations 1998:\n\n(a) revoke the Airworthiness Directives mentioned in\n\nSchedule 1; and\n\n(b) make, as separate instruments, each Airworthiness\n\nDirective mentioned in Schedule 1 and attached.\n\n![](image.001.png)\n\nDavid Villiers\n\nDelegate of the Civil Aviation Safety Authority\n\n20 December 2004\n\nNote: Each attached Airworthiness Directive is being re-made in exactly the\n\nsame form as appears in the latest published edition of the Directive.\n\n  \nSchedule 1 Revocation and Remaking of\n\nAirworthiness Directives\n\nCessna 550 (Citation II) Series Aeroplanes\n\nAD Name AD Number\n\nWing Main Spar - Inspection and Modification AD/CESSNA 550/1\n\nLanding Gear - Structural Life Limitation AD/CESSNA 550/2\n\nCabin Door Frame - Inspection, Modification and Replacement AD/CESSNA 550/3\n\nMain Gear Actuator to Strut Attach Stud - Inspection AD/CESSNA 550/4 Amdt 1\n\nElevator and Rudder Trim System - Inspection AD/CESSNA 550/5\n\nTailcone Skin and Vertical Fin Spar Interference AD/CESSNA 550/6 Amdt 2\n\nAnti-Skid Control Box - Modification AD/CESSNA 550/7\n\nNitrogen Bottle Installation - Inspection AD/CESSNA 550/8\n\nAirframe Ice Protection System Proportioning Units AD/CESSNA 550/9\n\nMLG Torque Link Assembly AD/CESSNA 550/10 Amdt\n\nTKS Proportioning Unit Connections AD/CESSNA 550/11\n\nElevator Trim Take-Off Range Marker AD/CESSNA 550/12\n\nBleed Air Check Valve AD/CESSNA 550/13\n\nIndirect (Fluorescent) Lighting System AD/CESSNA 550/14\n\nFlap Drain Holes AD/CESSNA 550/15 Amdt\n\nFuel Flow Transmitter AD/CESSNA 550/16\n\nFuel Flow Transmitters AD/CESSNA 550/17 Amdt\n\nBrake Shuttle Valve AD/CESSNA 550/18\n\nFreon Air Conditioner/Elevator Control Cable AD/CESSNA 550/19\n\nDrag Chute AD/CESSNA 550/20\n\nThrust Reverser Throttle Load Limiter AD/CESSNA 550/21\n\nOutflow Safety Valve AD/CESSNA 550/22\n\nAircraft Flight Manual, Flight into Icing Conditions AD/CESSNA 550/23 Amdt\n\nBFGoodrich Brake Stator Discs AD/CESSNA 550/24","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This instrument maintains identical scope to the original Airworthiness Directives. It is a pure re-making exercise with no expansion of subject matter, aircraft coverage, or safety requirements. The delegate explicitly notes that each AD is re-made 'in exactly the same form' as the latest published edition."},"complexity_factors":["Very short instrument (approximately 1 page of substantive content)","Simple binary structure: (a) revoke existing directives, (b) re-make as separate instruments","No defined terms section — relies on external understanding of 'Airworthiness Directive' and aircraft terminology","No conditional logic or nested exceptions — straightforward administrative action","Cross-references limited to Schedule 1 (tabular list of 24 ADs) and subregulation 39.001(1) of the CASR 1998","Content is purely procedural/administrative rather than substantive safety regulation"],"plain_english_summary":"This instrument revokes 24 existing Airworthiness Directives for Cessna 550 (Citation II) aeroplanes and re-makes them as 24 separate, standalone legal instruments without changing their content. It’s essentially legal housekeeping to give each mandatory safety requirement independent legal standing under the Civil Aviation Safety Regulations. Affects owners, operators, maintenance organisations and pilots by preserving existing safety obligations while improving how the directives are managed and referenced."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The instrument does not change the substantive scope or technical requirements of the listed ADs. It revokes existing AD instruments and reissues them in identical form as separate instruments (see clauses (a) and (b) and the Note), so affected aircraft operators and maintenance organisations continue to be bound by the same directives."},"complexity_factors":["Number of directives reissued: Schedule 1 lists AD/CESSNA 550/1 through AD/CESSNA 550/24 (Schedule 1).","Legal mechanism: the instrument uses revocation and separate remaking under delegated authority (instrument preamble: acting under subregulation 39.001 (1)).","Administrative impact: clauses (a) and (b) require revocation and re‑making as separate instruments, creating filing and instrument-management tasks for the regulator and record-keepers.","No substantive change to requirements: 'Each attached Airworthiness Directive is being re-made in exactly the same form as appears in the latest published edition of the Directive.' (Note).","Version tracking: several entries in Schedule 1 show amendments (e.g. 'Amdt 1', 'Amdt 2'), which adds paperwork and reference complexity for users and maintainers."],"plain_english_summary":"This instrument revokes a set of Airworthiness Directives for Cessna 550 (Citation II) aeroplanes and reissues each one as a separate, identical instrument. It affects owners, operators and maintenance organisations of Cessna 550 series aircraft because the listed ADs remain operative; the change is administrative and preserves existing technical requirements."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-cessna-550-citation-ii-series-aeroplanes","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-cessna-550-citation-ii-series-aeroplanes/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-cessna-550-citation-ii-series-aeroplanes/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-cessna-550-citation-ii-series-aeroplanes/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-cessna-550-citation-ii-series-aeroplanes/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-cessna-550-citation-ii-series-aeroplanes/documents"}}