{"id":"F2006B03823","name":"AD/BEECH 35/20 Amdt 2 - Plastic Control Wheel","slug":"ad-beech-35-20-amdt-2-plastic-control-wheel","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43419,"registerId":"commonwealth-F2006B03823-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 35/20 Amdt 2 - Plastic Control Wheel","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Beechcraft 35 (Bonanza) Series Aeroplanes\n\n \n\nAD/BEECH 35/20\n\nAmdt 2\n\n\nPlastic Control Wheel 12/70\n\n \n\nApplicability: All models fitted with non-reinforced plastic control wheels.\n\n \n\nRequirement: Visually inspect all plastic non-reinforced control wheels for cracking. Control wheels in which cracks are present shall be replaced with a serviceable item before further flight. It is recommended that replacements should be of the metal reinforced type.\n\n \n\nCompliance: At intervals not exceeding 100 hours time in service.\n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The provided text applies to all Beechcraft 35 series aeroplanes fitted with non-reinforced plastic control wheels, requires visual inspection for cracking at intervals not exceeding 100 hours, and mandates replacement of cracked wheels before further flight (Applicability; Requirement; Compliance). The document as supplied does not show any expansion or narrowing of that applicability or the substantive requirements compared with any prior instrument; no internal text indicates a change of scope from an earlier version."},"complexity_factors":["Narrow technical scope limited to non-reinforced plastic control wheels (Applicability)","Simple, single inspection method (visual) rather than multiple technical tests (Requirement)","Single fixed compliance interval (100 hours) (Compliance)","Mandatory immediate replacement before further flight if cracks are found (Requirement)","Recommendation (not mandate) to use metal-reinforced replacements, creating an optional choice for operators (Requirement)","Subjective judgement risk because inspection is visual and no crack dimensions/criteria are specified (Requirement)","Regulatory enforcement context present but no detailed enforcement mechanism or recordkeeping specified (Schedule header)"],"plain_english_summary":"What this instrument does mechanically:\n\n- Requires operators to visually inspect all non-reinforced plastic control wheels on Beechcraft 35 (Bonanza) series aeroplanes for cracking (Requirement).\n- Says any control wheel in which cracks are found must be replaced with a serviceable item before the aircraft is flown again (Requirement).\n- Sets the inspection interval as not exceeding 100 hours time in service (Compliance).\n- Recommends (but does not mandate) that replacement wheels be of the metal-reinforced type (Requirement).\n\nWho it affects and who decides:\n\n- Affects owners and operators of Beechcraft 35 series aeroplanes fitted with non-reinforced plastic control wheels (Applicability).\n- Day-to-day decisions about inspection and replacement are made by the aircraft operator and maintenance personnel. Regulatory oversight and enforcement are exercised under the Civil Aviation Safety Authority framework in the Schedule of Airworthiness Directives header.\n\nStated purpose and how that maps to costs and incentives:\n\n- The instrument sets a mechanical safety process (regular visual checks and mandatory replacement before further flight when cracks are found). The text presents this as a preventative safety requirement (Requirement, Compliance).\n- Who pays: owners/operators pay for inspection labour and any replacement parts and installation (Requirement; Compliance). Replacement with a metal-reinforced wheel is recommended but optional, so the operator bears the cost of choosing that option (Requirement).\n- Incentives and behaviour change: operators must add a 100-hour inspection task to maintenance schedules and ground aircraft for replacement if cracking is detected, creating an operational incentive to inspect and either replace preemptively or monitor closely (Compliance; Requirement).\n\nTrade-offs, compliance burden, and implementation risks:\n\n- Compliance burden: visual inspection every 100 hours increases maintenance workload and requires recordkeeping to demonstrate compliance (Compliance).\n- Mandatory replacement before further flight imposes immediate direct costs (parts and labour) and potential aircraft downtime when cracks are found (Requirement).\n- Inspection method is visual only; that creates subjectivity and potential variability in detection (Requirement). The AD does not specify non-visual inspection techniques or measurable crack thresholds, which leaves judgement to maintenance personnel.\n- The text recommends metal-reinforced replacements but does not require them; it does not quantify lifecycle costs or specify that reinforced wheels change the inspection interval. Operators must weigh upfront costs of reinforced wheels against uncertain future benefits (Requirement).\n\nOther practical effects and limits in the text:\n\n- The AD applies only to aeroplanes fitted with non-reinforced plastic control wheels; if an aeroplane already has a reinforced wheel, the AD as written does not impose the inspection/replacement mandate (Applicability).\n- The instrument specifies what must be done (inspect, replace cracked items, inspection interval) but does not set out enforcement penalties or a detailed compliance-recording regime beyond being an Airworthiness Directive within the Civil Aviation Safety Authority schedule (Requirement; Compliance)."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is Amendment 2 to an existing Airworthiness Directive originally issued in 1970. The scope remains tightly focused on the original safety issue: preventing control wheel failures in Beechcraft 35 aircraft. The amendment appears to be a routine update (possibly editorial or minor technical revision) without expansion into unrelated aircraft systems or models."},"complexity_factors":["Extremely short document — only 4 substantive paragraphs","Zero defined terms requiring interpretation","No cross-references to other legislation or regulations","Simple conditional logic: if cracks found → replace before flight","Single compliance requirement with clear time interval (100 hours)","No exceptions, exemptions, or nested conditions","Straightforward applicability test (specific aircraft model + specific component type)"],"plain_english_summary":"This is an **Airworthiness Directive** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) that requires specific maintenance actions on aircraft.\n\n**What it does:**\nOrders owners and operators of certain Beechcraft 35 (Bonanza) series aeroplanes to regularly inspect their control wheels (the steering wheel-like device pilots use to fly the plane) for cracks.\n\n**Who it affects:**\nAnyone who owns or operates a Beechcraft 35 series aircraft that has **non-reinforced plastic control wheels** — essentially older or specific models with plastic rather than metal-reinforced steering controls.\n\n**What must be done:**\n- **Inspect** the plastic control wheels visually for cracks\n- **Replace** any cracked control wheels with a serviceable (working) one before the aircraft can fly again\n- **Use metal-reinforced replacements** where possible (recommended but not mandatory)\n- **Repeat this inspection** at least every 100 hours of flight time\n\n**Why it matters:**\nCracked control wheels could fail during flight, potentially causing loss of aircraft control. This directive prevents accidents by catching deterioration before it becomes dangerous. The 100-hour interval balances safety with practical maintenance schedules."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-35-20-amdt-2-plastic-control-wheel","history":"/api/acts/ad-beech-35-20-amdt-2-plastic-control-wheel/history","analysis":"/api/acts/ad-beech-35-20-amdt-2-plastic-control-wheel/analysis","conflicts":"/api/acts/ad-beech-35-20-amdt-2-plastic-control-wheel/conflicts","importantCases":"/api/acts/ad-beech-35-20-amdt-2-plastic-control-wheel/important-cases","documents":"/api/acts/ad-beech-35-20-amdt-2-plastic-control-wheel/documents"}}