{"id":"F2006B08441","name":"AD/CESSNA 560/4 Amdt 1 - Aircraft Flight Manual, Flight into Icing Conditions","slug":"ad-cessna-560-4-amdt-1-aircraft-flight-manual-flight-into-icing-conditions","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115934,"registerId":"commonwealth-F2006B08441-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.002.png)\n\n![](image.002.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/CESSNA 560/4 and issues the following AD under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.","sortOrder":0},{"sectionNumber":"AD/CESSNA 560/4","sectionType":"part","heading":"AD/CESSNA 560/4","content":"# AD/CESSNA 560/4\n\nAmdt 1\n\n  \n\nAircraft Flight Manual, Flight into Icing Conditions\n\n  \n7/2000","sortOrder":1},{"sectionNumber":"\"WARNING\"","sectionType":"part","heading":"\"WARNING\"","content":"# \"WARNING\"\n\nSevere icing may result from environmental conditions outside of those for which the aircraft is certificated.\n\nFlight in freezing rain, freezing drizzle, or mixed icing conditions (super cooled liquid water and ice crystals) may result in:\n\n    ice build-up on protected surfaces and exceed the capability of the ice protection system, or\n\n    ice forming aft of the protected surfaces.\n\nThis ice may not be shed using the ice protection systems, and may seriously degrade the performance and controllability of the aircraft.\n\nDuring flight, severe icing conditions that exceed those for which the aircraft is certificated shall be determined by the visual cues described below. If one or more of these visual cues exists, immediately request priority handling from Air Traffic Control to facilitate a route or an altitude change to exit the icing conditions. The cues are:\n\n    unusually extensive ice accumulation on the airframe and windscreen in areas not normally observed to collect ice, and/or\n\n    accumulation of ice on the upper surface of the wing aft of the protected area.","sortOrder":2},{"sectionNumber":"THE FOLLOWING WEATHER CONDITIONS MAY BE ","sectionType":"part","heading":"THE FOLLOWING WEATHER CONDITIONS MAY BE CONDUCIVE TO SEVERE IN-FLIGHT ICING:","content":"# THE FOLLOWING WEATHER CONDITIONS MAY BE CONDUCIVE TO SEVERE IN-FLIGHT ICING:\n\n    Visible rain at temperatures below 0 degrees Celsius ambient air temperature;\n    Droplets that splash or splatter on impact at temperatures below 0 degrees Celsius ambient air temperature.","sortOrder":3},{"sectionNumber":"PROCEDURES FOR EXITING A SEVERE ICING","sectionType":"part","heading":"PROCEDURES FOR EXITING A SEVERE ICING","content":"# PROCEDURES FOR EXITING A SEVERE ICING\n\nENVIRONMENT: (These procedures are applicable to all flight phases from take-off to landing.)\n\nMonitor the ambient air temperature.\n\nWhile severe icing may form at temperatures as cold as \\-18 degrees Celsius, increased vigilance is warranted at temperatures around freezing when visible moisture is present.","sortOrder":4}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is an amendment to an existing Airworthiness Directive. The scope remains tightly focused on flight manual procedures for icing conditions in Cessna 560 aircraft. The amendment appears to update or clarify the original directive without expanding beyond the original safety purpose."},"complexity_factors":["Very short document (approximately 400 words)","No defined terms section — all language is operational and descriptive","No cross-references to other legislation beyond the single citation of CAR 1998 subregulation 39.1(1)","Simple conditional structure: 'If X occurs, do Y'","Single regulatory mechanism: revoke old AD, issue new AD, state requirement","Operational content is procedural guidance rather than complex legal conditions"],"plain_english_summary":"This CASA Airworthiness Directive for Cessna 560 jets revokes and replaces a prior AD, mandating specific procedures for pilots and operators when encountering icing. It responds to severe icing (freezing rain/drizzle and mixed conditions) that can exceed the jet’s ice protection, risking loss of control. Affected parties must watch for visual signs of unprotected ice, monitor OAT near freezing, and request priority ATC assistance to change altitude or route to escape hazardous icing."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"The AD explicitly revokes the prior AD and issues an amendment that replaces or augments Aircraft Flight Manual material: it broadens operational guidance by adding specific warnings, visual cues, weather conditions and mandatory exit procedures applicable across all flight phases, thereby changing operator and pilot obligations from the prior instrument (source: opening paragraph; WARNING; THE FOLLOWING WEATHER CONDITIONS MAY BE CONDUCIVE TO SEVERE IN-FLIGHT ICING; PROCEDURES FOR EXITING A SEVERE ICING ENVIRONMENT)."},"complexity_factors":["Revocation and reissuance of an AD creates an administrative task: operators must update the Aircraft Flight Manual (source: opening paragraph revoking AD/CESSNA 560/4).","Mandated pilot actions depend on subjective visual cues (source: WARNING — \"unusually extensive ice accumulation\"; \"accumulation of ice on the upper surface of the wing aft of the protected area\").","Operational dependency on external services: pilots must request priority handling from Air Traffic Control to facilitate route/altitude changes (source: WARNING — request priority handling).","Procedural monitoring requirement across all flight phases increases vigilance and training needs (source: PROCEDURES FOR EXITING A SEVERE ICING ENVIRONMENT — applicable to all flight phases).","Technical uncertainty about ice beyond certified conditions (freezing rain/drizzle, mixed conditions) raises judgment calls on when protections are exceeded (source: WARNING; THE FOLLOWING WEATHER CONDITIONS MAY BE CONDUCIVE TO SEVERE IN-FLIGHT ICING).","Regulatory discretion: AD issued under CASA delegate power in CAR 1998 subregulation 39.1(1), creating binding compliance obligations determined by the delegate (source: opening paragraph).","Low equipment modification burden but non‑trivial operational and training costs: the AD changes information and procedures rather than requiring physical modifications (implied by AFM amendment content)."],"plain_english_summary":"This airworthiness directive revokes the prior AD/CESSNA 560/4 and issues an amended Aircraft Flight Manual requirement for Cessna 560 operators and pilots. It adds explicit warnings, visual cues and mandatory procedures for recognising and exiting severe icing, and requires pilots to request ATC priority to change route or altitude when those cues are present.\n\nIt matters because operators must update manuals and train crews; pilots must monitor ambient temperature, watch for ice aft of protected areas, and act immediately when the specified visual cues occur. The AD is issued under CAR 1998 subregulation 39.1(1)."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-560-4-amdt-1-aircraft-flight-manual-flight-into-icing-conditions","history":"/api/acts/ad-cessna-560-4-amdt-1-aircraft-flight-manual-flight-into-icing-conditions/history","analysis":"/api/acts/ad-cessna-560-4-amdt-1-aircraft-flight-manual-flight-into-icing-conditions/analysis","conflicts":"/api/acts/ad-cessna-560-4-amdt-1-aircraft-flight-manual-flight-into-icing-conditions/conflicts","importantCases":"/api/acts/ad-cessna-560-4-amdt-1-aircraft-flight-manual-flight-into-icing-conditions/important-cases","documents":"/api/acts/ad-cessna-560-4-amdt-1-aircraft-flight-manual-flight-into-icing-conditions/documents"}}