{"id":"F2006B08107","name":"AD/CESSNA 210/58 Amdt 1 - Turbocharger Oil Reservoir Outlet Fitting","slug":"ad-cessna-210-58-amdt-1-turbocharger-oil-reservoir-outlet-fitting","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115217,"registerId":"commonwealth-F2006B08107-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 210/58 Amdt 1 - Turbocharger Oil Reservoir Outlet Fitting","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nCessna 210 Series Aeroplanes\n\nAD/CESSNA 210/58\n\nAmdt 1\n\n  \nTurbocharger Oil Reservoir Outlet Fitting 8/85\n\nApplicability: All model P210N, P210R and T210R with S/Nos P21000001 to P21000855, 21064898 to 21064929.\n\nRequirement: Action in accordance with Cessna Service Bulletin SEB 85-11 or FAA AD 85-11-07. Compliance: 1. Before further flight after 13 June 1985.\n\n2. Where no cracks are found after initial inspection, repeat inspection every 25 hours time in service until modified in accordance with Requirement Document.\n\nNote: Compliance with the previous issue of this Directive constitutes compliance with this issue.\n\nBackground: This Directive has been amended to include Cessna SB SEB 85-11 as a Requirement Document.\n\nTurbocharger oil reservoir outlet fitting may crack, resulting in rapid loss of engine oil.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment is purely technical and administrative. It expands the acceptable compliance documents to include Cessna's own service bulletin (SEB 85-11) alongside the existing FAA directive, but does not change the underlying safety requirement, affected aircraft, or inspection intervals. The scope remains exactly as originally intended: preventing turbocharger oil fitting failures on specific Cessna models."},"complexity_factors":["Very short document (under 200 words)","Only 3 defined applicability criteria (specific aircraft models and serial number ranges)","Simple two-step compliance structure (initial inspection + recurring inspection)","Single cross-reference to external technical documents (Cessna Service Bulletin SEB 85-11 and FAA AD 85-11-07)","No nested conditions or exceptions beyond the standard 'if no cracks found' clause","Plain language background explanation included"],"plain_english_summary":"This is a **safety order** (called an \"Airworthiness Directive\") issued by Australia's aviation safety regulator for specific Cessna aeroplanes.\n\n**What it does:**\n- Requires owners and operators of certain Cessna 210 series planes (models P210N, P210R, and T210R with specific serial numbers) to inspect a particular engine part — the **turbocharger oil reservoir outlet fitting**.\n- This fitting can develop cracks, which could cause rapid and dangerous loss of engine oil.\n\n**What must be done:**\n- **Immediate action:** Before flying again after 13 June 1985, the fitting must be inspected following specific instructions in Cessna Service Bulletin SEB 85-11 or an equivalent US Federal Aviation Administration directive.\n- **Ongoing checks:** If no cracks are found initially, the inspection must be repeated every 25 hours of flight time until a permanent fix is installed.\n\n**Who it affects:**\n- Owners and operators of the specified Cessna aircraft models.\n- Maintenance engineers who work on these planes.\n\n**Why it matters:**\n- A cracked oil fitting could cause sudden engine failure in flight — a potentially catastrophic safety risk. This directive ensures the problem is caught before it causes an accident.\n\n**Key note:** This is an **amended version** (Amendment 1) that now officially recognises Cessna's own service bulletin as an acceptable way to comply. If you already followed the previous version of this directive, you're still compliant."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"The Directive has been amended to explicitly include Cessna Service Bulletin SEB 85-11 as a Requirement Document (Background). Aside from adding that service bulletin as an acceptable technical source for the required actions, the applicability, required inspections, and compliance timing remain as previously stated (Applicability; Requirement; Compliance)."},"complexity_factors":["Narrow applicability limited to specific models and serial-number ranges (Applicability), which reduces operational complexity for regulators but requires accurate serial-number checking by operators.","Immediate compliance deadline for initial inspection (before next flight after 13 June 1985) imposes urgent action and short lead time (Compliance).","Requirement depends on external technical documents (Cessna Service Bulletin SEB 85-11 or FAA AD 85-11-07), creating operational dependence on those documents for procedural detail (Requirement; Background).","Ongoing repeated-inspection obligation every 25 hours until modification increases cumulative compliance burden for operators who delay modification (Requirement; Compliance).","Limited scope and clear actions reduce legal and interpretive complexity; enforcement and interpretation largely mechanical (Applicability; Requirement)."],"plain_english_summary":"This directive requires inspections and, if needed, modification of certain Cessna 210 (P210N/P210R/T210R within the listed serial ranges) because the turbocharger oil reservoir outlet fitting can crack and cause rapid engine oil loss. Operators must inspect before the next flight after 13 June 1985 and repeat every 25 flight hours until the modification in Cessna SB SEB 85‑11 (or FAA AD 85‑11‑07) is completed. It protects safety but imposes inspection, repair and downtime costs on owners/operators."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-210-58-amdt-1-turbocharger-oil-reservoir-outlet-fitting","history":"/api/acts/ad-cessna-210-58-amdt-1-turbocharger-oil-reservoir-outlet-fitting/history","analysis":"/api/acts/ad-cessna-210-58-amdt-1-turbocharger-oil-reservoir-outlet-fitting/analysis","conflicts":"/api/acts/ad-cessna-210-58-amdt-1-turbocharger-oil-reservoir-outlet-fitting/conflicts","importantCases":"/api/acts/ad-cessna-210-58-amdt-1-turbocharger-oil-reservoir-outlet-fitting/important-cases","documents":"/api/acts/ad-cessna-210-58-amdt-1-turbocharger-oil-reservoir-outlet-fitting/documents"}}