{"id":"F2006B08085","name":"AD/CESSNA 210/37 - Turbocharger Oil Return Hose - Replacement","slug":"ad-cessna-210-37-turbocharger-oil-return-hose-replacement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115188,"registerId":"commonwealth-F2006B08085-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 210/37 - Turbocharger Oil Return Hose - Replacement","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\n# AD/CESSNA 210/37 Turbocharger Oil Return Hose - Replacement\n\nApplicability: Model P210 with S/Nos. P21000001 to P21000164. Document:  Cessna Customer Care SIL No. SE79-19.\n\nCompliance: Within 100 hours time in service after 31 July 1979.\n\n# 7/79\n\n \n\nBackground:  The existing turbocharger oil return hose is replaced with a hose specially designed for suction application.\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":1416},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This airworthiness directive maintains its original narrow scope as a targeted safety intervention for a specific aircraft model and serial number range. It has not expanded beyond the original intent of addressing the deficient turbocharger oil return hose design."},"complexity_factors":["Single, discrete maintenance action required","Narrow applicability limited to specific serial number range","Simple time-in-service compliance calculation (100 hours after fixed date)","Reference to one external technical document for implementation details"],"plain_english_summary":"**What this means:** Owners and operators of specific Cessna P210 aircraft must replace a faulty turbocharger oil return hose to prevent potential engine damage or failure.\n\n**Who is affected:**\n- Cessna Model P210 aeroplanes only\n- Serial numbers from P21000001 through P21000164\n\n**What you must do:**\n- Replace the existing turbocharger oil return hose with a new hose specifically designed for suction applications (the original hose couldn't handle the suction pressure)\n- Complete this replacement within 100 hours of flight time after 31 July 1979\n\n**Why it matters:** The original hose was prone to failure under suction conditions. This mandatory replacement prevents oil leaks and potential catastrophic engine damage.\n\n**Technical details:** The replacement must follow the procedures outlined in Cessna Customer Care Service Information Letter No. SE79-19."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-210-37-turbocharger-oil-return-hose-replacement","history":"/api/acts/ad-cessna-210-37-turbocharger-oil-return-hose-replacement/history","analysis":"/api/acts/ad-cessna-210-37-turbocharger-oil-return-hose-replacement/analysis","conflicts":"/api/acts/ad-cessna-210-37-turbocharger-oil-return-hose-replacement/conflicts","importantCases":"/api/acts/ad-cessna-210-37-turbocharger-oil-return-hose-replacement/important-cases","documents":"/api/acts/ad-cessna-210-37-turbocharger-oil-return-hose-replacement/documents"}}