{"id":"F2006B08070","name":"AD/CESSNA 210/2 - Nose Gear Downlock - Modification","slug":"ad-cessna-210-2-nose-gear-downlock-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115162,"registerId":"commonwealth-F2006B08070-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 210/2 - Nose Gear Downlock - Modification","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 210 Series Aeroplanes\n\n \n\nAD/CESSNA 210/2 Nose Gear Downlock - Modification 10/60\n\nApplicability: All models with S/Nos. prior to 57524. Document: Cessna SL No. 210-13.\n\nCompliance: 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\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1563},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This airworthiness directive remains tightly scoped to its original purpose: mandating a specific safety modification to the nose gear downlock mechanism of early-model Cessna 210 aircraft. It has not expanded beyond this narrow technical safety requirement."},"complexity_factors":["Single, unambiguous operative requirement","No defined terms section","No cross-references to other legislative provisions beyond the empowering Civil Aviation Regulations","Clear applicability criteria (serial number range only)","No exceptions, exemptions, or conditional logic"],"plain_english_summary":"**What this requires:** Owners and operators of specific Cessna 210 aircraft must modify the nose gear downlock mechanism (the component that locks the front wheel in the down position during landing).\n\n**Who is affected:** Anyone operating a Cessna 210 series aircraft with a serial number below 57524.\n\n**What must be done:** Follow the technical instructions in Cessna Service Letter No. 210-13 to complete the modification.\n\n**Why it matters:** This prevents the nose landing gear from collapsing or failing to stay locked during landing, which could cause a runway accident or loss of control.\n\n**Compliance deadline:** The modification had to be completed before 1 September 1971 (this directive was originally issued in October 1960)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-210-2-nose-gear-downlock-modification","history":"/api/acts/ad-cessna-210-2-nose-gear-downlock-modification/history","analysis":"/api/acts/ad-cessna-210-2-nose-gear-downlock-modification/analysis","conflicts":"/api/acts/ad-cessna-210-2-nose-gear-downlock-modification/conflicts","importantCases":"/api/acts/ad-cessna-210-2-nose-gear-downlock-modification/important-cases","documents":"/api/acts/ad-cessna-210-2-nose-gear-downlock-modification/documents"}}