{"id":"F2006B04950","name":"AD/CESSNA 170/13 Amdt 2 - Plastic Control Wheel","slug":"ad-cessna-170-13-amdt-2-plastic-control-wheel","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44815,"registerId":"commonwealth-F2006B04950-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 170/13 Amdt 2 - Plastic Control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)  Cessna 170, 172, F172, FR172 and 175 Series Aeroplanes\n\n \n\nAD/CESSNA 170/13\n\nAmdt 2\n\n\nPlastic Control Wheel 9/71\n\n \n\nApplicability: All 172 and 175 series fitted with plastic control wheels. Requirement: Action in accordance with\n\n1. (a) Cessna SL No 62-44 and\n\n \n\n1. (b) Cessna SL No 64-8.\n\n \n\nCompliance: For document 1(a) at intervals not exceeding 100 hours time in service and for document 1(b) at intervals not exceeding 500 hours time in service after 1 September 1971.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2175},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"As Amendment 2, this appears to maintain the original scope targeting plastic control wheel safety on Cessna 172 and 175 series aircraft. The amendment does not expand applicability to new aircraft types or introduce new categories of requirements beyond the original safety inspection intent."},"complexity_factors":["Depends on external technical documents (Cessna Service Letters 62-44 and 64-8) which contain the actual inspection procedures but are not reproduced in the directive","Dual compliance schedules requiring tracking of two separate hourly intervals (100-hour and 500-hour)","Retroactive date threshold for the 500-hour requirement (only hours after 1 September 1971 count toward the interval)"],"plain_english_summary":"**What it does:** This Airworthiness Directive (AD) requires regular safety inspections of plastic control wheels (the \"yokes\" that pilots hold) on certain Cessna aircraft to prevent in-flight failures.\n\n**Who it affects:** Owners and operators of **Cessna 172 and 175 series aircraft** that are fitted with plastic control wheels.\n\n**What you must do:**\n*   Follow the instructions in **Cessna Service Letter No. 62-44** every **100 hours of flight time** (time in service)\n*   Follow the instructions in **Cessna Service Letter No. 64-8** every **500 hours of flight time**, but only counting hours flown after 1 September 1971\n\n**Why it matters:** Plastic control wheels can crack or degrade with age and use. Without these regular checks, the wheel could break during flight, causing loss of control of the aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-170-13-amdt-2-plastic-control-wheel","history":"/api/acts/ad-cessna-170-13-amdt-2-plastic-control-wheel/history","analysis":"/api/acts/ad-cessna-170-13-amdt-2-plastic-control-wheel/analysis","conflicts":"/api/acts/ad-cessna-170-13-amdt-2-plastic-control-wheel/conflicts","importantCases":"/api/acts/ad-cessna-170-13-amdt-2-plastic-control-wheel/important-cases","documents":"/api/acts/ad-cessna-170-13-amdt-2-plastic-control-wheel/documents"}}