{"id":"F2006B04031","name":"AD/BEECH 55/85 Amdt 1 - Aircraft Flight Manual, Flight into Icing Conditions","slug":"ad-beech-55-85-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":43640,"registerId":"commonwealth-F2006B04031-current","compilationNumber":null,"startDate":"2026-04-02","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/BEECH 55/85 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/BEECH 55/85","sectionType":"part","heading":"AD/BEECH 55/85","content":"# AD/BEECH 55/85\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, and/or\n\n    accumulation of ice on the engine nacelles and propeller spinners farther aft than normally observed.","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":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"The AD explicitly revokes the prior AD/BEECH 55/85 and issues an amended directive that updates Aircraft Flight Manual content: a WARNING about severe icing, specified visual cues for in-flight detection, explicit weather conditions conducive to severe icing, and procedures to exit severe icing (see preamble; \"WARNING\"; \"THE FOLLOWING WEATHER CONDITIONS MAY BE CONDUCIVE TO SEVERE IN-FLIGHT ICING\"; \"PROCEDURES FOR EXITING A SEVERE ICING\"). This replaces the earlier instrument's scope and imposes a documentation and operational-change obligation on operators and pilots."},"complexity_factors":["Regulatory replacement: revokes and replaces a prior AD, requiring operators to update documentation (preamble referencing subreg 39.1(1) CAR 1998).","Technical threshold values and meteorological detail (visible rain below 0°C, droplets that splash, icing possible as cold as -18°C).","Operational scope covers all flight phases from take-off to landing (Procedures for exiting a severe icing environment).","Reliance on subjective visual cues (unusual ice accumulation locations) increases variability in pilot judgement and compliance timing.","Administrative compliance burden: amendment of the Aircraft Flight Manual and pilot training/briefing to follow new cues and procedures.","Enforcement risk: CASA delegate authority to require corrective action creates a binding legal obligation on operators."],"plain_english_summary":"This Airworthiness Directive revokes an earlier AD and requires the Aircraft Flight Manual for affected Beech aircraft to be updated with enhanced warnings, visual cues for detecting severe icing, weather criteria, and procedures to exit severe icing. It affects operators and pilots, who must amend manuals and follow the listed checks and exit actions; the CASA delegate (under subreg 39.1(1) of CAR 1998) enforces compliance because severe icing can exceed certified protection and impair aircraft control."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is an amendment (Amdt 1) to an existing Airworthiness Directive. The scope remains tightly focused on its original purpose: addressing unsafe icing conditions in specific Beechcraft aircraft by mandating flight manual updates. There is no evidence of scope creep — the amendment appears to update or replace the previous directive without expanding beyond the original safety concern."},"complexity_factors":["Very short document (approximately 400 words)","No defined terms section — all language is operational and descriptive","No cross-references to other legislation or regulations beyond a single citation to CAR 1998 subregulation 39.1(1)","Simple conditional structure: if visual cues present → take immediate action","Single purpose document with clear applicability (specific Beechcraft aircraft)","Straightforward compliance requirement: insert specified text into flight manual"],"plain_english_summary":"This AD replaces the earlier Beechcraft 55/85 directive and requires operators to amend Aircraft Flight Manuals with a new warning, recognition cues, and emergency escape procedures for severe icing—conditions where ice can accumulate faster than protection systems can cope. \n\nIt affects owners, operators and pilots of the specified Beechcraft models and matters because severe icing (reported down to about −18°C) can rapidly degrade performance and control, so timely recognition and altitude/route changes are critical for safety."},"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-beech-55-85-amdt-1-aircraft-flight-manual-flight-into-icing-conditions","history":"/api/acts/ad-beech-55-85-amdt-1-aircraft-flight-manual-flight-into-icing-conditions/history","analysis":"/api/acts/ad-beech-55-85-amdt-1-aircraft-flight-manual-flight-into-icing-conditions/analysis","conflicts":"/api/acts/ad-beech-55-85-amdt-1-aircraft-flight-manual-flight-into-icing-conditions/conflicts","importantCases":"/api/acts/ad-beech-55-85-amdt-1-aircraft-flight-manual-flight-into-icing-conditions/important-cases","documents":"/api/acts/ad-beech-55-85-amdt-1-aircraft-flight-manual-flight-into-icing-conditions/documents"}}