{"id":"F2006B04961","name":"AD/CESSNA 170/3 - Nose Wheel Strut","slug":"ad-cessna-170-3-nose-wheel-strut","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44834,"registerId":"commonwealth-F2006B04961-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 170/3 - Nose Wheel Strut","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 170/3 Nose Wheel Strut NK\n\nApplicability: Model 172 prior to S/No 28332.\n\n \n\nRequirement: Action in accordance with Cessna SL No 170-5. Compliance: Before 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\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2058},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive retains its original narrow, technical scope: mandating a specific safety inspection or modification to the nose wheel strut of certain Cessna aircraft. There is no indication of scope creep or expansion beyond this single mechanical issue."},"complexity_factors":["Extremely brief text (under 50 words of substantive content)","Single external cross-reference to technical document (Cessna Service Letter No. 170-5) required to determine specific inspection or repair steps","Simple, unambiguous applicability criteria based solely on aircraft model and serial number"],"plain_english_summary":"This is an **Airworthiness Directive** — a legally binding safety rule issued by the aviation regulator for aircraft owners and operators.\n\n**Who it affects:**\nOwners of **Cessna Model 172 aircraft** with a **serial number below 28332**.\n\n**What you must do:**\nInspect or repair the **nose wheel strut** (the front landing gear that absorbs impact during landing) according to the manufacturer's instructions in **Cessna Service Letter No. 170-5**.\n\n**When:**\nThe work had to be completed **before 1 September 1971**.\n\nThese directives are issued when a specific mechanical defect is discovered that could affect flight safety. Compliance is mandatory — you cannot legally fly the aircraft until the required action is taken."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-170-3-nose-wheel-strut","history":"/api/acts/ad-cessna-170-3-nose-wheel-strut/history","analysis":"/api/acts/ad-cessna-170-3-nose-wheel-strut/analysis","conflicts":"/api/acts/ad-cessna-170-3-nose-wheel-strut/conflicts","importantCases":"/api/acts/ad-cessna-170-3-nose-wheel-strut/important-cases","documents":"/api/acts/ad-cessna-170-3-nose-wheel-strut/documents"}}