{"id":"F2006B05053","name":"AD/CESSNA 180/40 Amdt 1 - Main Gear Wheel Assemblies","slug":"ad-cessna-180-40-amdt-1-main-gear-wheel-assemblies","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44963,"registerId":"commonwealth-F2006B05053-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 180/40 Amdt 1 - Main Gear Wheel Assemblies","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 180, 182 and Wren 460 Series Aeroplanes\n\n \n\nAD/CESSNA 180/40\n\nAmdt 1\n\n\nMain Gear Wheel Assemblies 11/75\n\n \n\nApplicability: All models 180 fitted with McCauley D-30063 wheel assemblies.\n\n \n\nRequirement: Action in accordance with Cessna SL SE74-8 dated 17 May 1974 or later revisions. Compliance:               1. 1974 Models:              Within 25 hours time in service.\n\n2. 1973 Models: At the next main wheel disassembly after 31 December 1975 or before 31 December 1976 whichever occurs first.\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\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1664},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment maintains the original scope focused specifically on McCauley D-30063 wheel assemblies on Cessna 180 aircraft. As an amendment to an existing directive, it does not appear to have expanded beyond the original safety concern regarding these specific landing gear components."},"complexity_factors":["Single-issue directive with narrow applicability (specific aircraft model and specific wheel part number)","References external technical document (Cessna Service Letter SE74-8) without reproducing its contents","Model-year specific compliance deadlines creating two distinct regulatory categories (1973 vs 1974 models)","Technical aviation terminology requiring specialized knowledge (e.g., 'time in service', 'main wheel disassembly')"],"plain_english_summary":"**What this does:** This Airworthiness Directive (a legally binding safety order issued by the aviation regulator) requires owners and operators of specific Cessna aircraft to inspect or repair the main landing gear wheel assemblies.\n\n**Who it affects:** Anyone operating a **Cessna 180** aircraft fitted with **McCauley D-30063 wheel assemblies**.\n\n**What you must do:** Follow the technical instructions in **Cessna Service Letter SE74-8** (dated 17 May 1974) to address safety issues with these wheel assemblies. This service letter contains the specific steps for inspection or replacement.\n\n**When you must comply:**\n- **1974 models:** Within 25 hours of flying time (\"time in service\")\n- **1973 models:** Either at the next time the main wheel is taken apart after 31 December 1975, **or** before 31 December 1976—whichever happens first\n\n**Why it matters:** This prevents potential mechanical failures of the main landing gear wheels that could compromise safety during takeoff, landing, or flight operations."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-180-40-amdt-1-main-gear-wheel-assemblies","history":"/api/acts/ad-cessna-180-40-amdt-1-main-gear-wheel-assemblies/history","analysis":"/api/acts/ad-cessna-180-40-amdt-1-main-gear-wheel-assemblies/analysis","conflicts":"/api/acts/ad-cessna-180-40-amdt-1-main-gear-wheel-assemblies/conflicts","importantCases":"/api/acts/ad-cessna-180-40-amdt-1-main-gear-wheel-assemblies/important-cases","documents":"/api/acts/ad-cessna-180-40-amdt-1-main-gear-wheel-assemblies/documents"}}