{"id":"F2006B08101","name":"AD/CESSNA 210/52 Amdt 2 - Engine Exhaust System - Inspection","slug":"ad-cessna-210-52-amdt-2-engine-exhaust-system-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115211,"registerId":"commonwealth-F2006B08101-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 210/52 Amdt 2 - Engine Exhaust System - Inspection","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 210/52\n\nAmdt 2\n\n  \nEngine Exhaust System \\- Inspection 2/83\n\nApplicability: Model P210N with S/Nos. P21000001 to P21000811 not fitted with complete inconel exhaust systems consisting of Cessna part numbers 2154000-53 left hand assembly, 2154000-54 right hand assembly and 2154000-68 forward crossover assembly.\n\nDocument: Cessna SIL No. SE82-3 and SE82-3 Supplement No. 1.\n\nNote 1: FAA AD 81-23-03 R2 refers.\n\nCompliance: 1. Unless already accomplished in accordance with the previous issues of this Directive, within 25 hours time in service after 31 December 1982.\n\nNote 2: Thereafter at intervals not exceeding 50 hours time in service except as shown under the Repair Procedures outlined in Cessna SIL SE82-3.\n\nBackground: This Directive has been amended to exclude aircraft fitted with complete inconel exhaust systems. Repetitive inspections of the engine exhaust system are required to reduce the possibility of carbon monoxide entering the cabin, and to prevent the loss of engine and electrical power.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"The Directive was amended to exclude aircraft fitted with complete inconel exhaust systems (Cessna part numbers 2154000-53, -54 and -68), narrowing its coverage. Originally applicable to P210N S/Ns P21000001–P21000811, the amendment removes aircraft with those inconel assemblies from the inspection requirement, shifting compliance obligations away from those owners/operators (Applicability; Background)."},"complexity_factors":["Serial-number-limited applicability with an explicit exclusion for aircraft fitted with specific inconel part numbers (Applicability).","Short mandatory initial compliance window followed by repetitive intervals (initial 25 hours, then 50-hour intervals) creating time-sensitive obligations for operators (Compliance; Note 2).","Dependence on external manufacturer guidance and repair procedures (Cessna SIL SE82-3 and Supplement No.1) which requires cross-referencing additional technical material to determine exact inspection and repair steps (Document).","Reference to an FAA AD for related authority/context (Note 1), adding another external standard to consider.","Amendment history that narrows coverage (exclusion for inconel systems) which affects who must comply and may require operators to verify configuration/parts to determine applicability (Background).","Safety-driven mandate (carbon monoxide ingress; engine/electrical power loss) that creates potential for recurring maintenance costs and downtime for affected aircraft (Background)."],"plain_english_summary":"This airworthiness directive requires owners/operators of specified Cessna P210N aeroplanes to carry out repeated inspections of the engine exhaust system (initial check within 25 hours after 31 Dec 1982, then every 50 hours unless repair procedures modify intervals) to reduce the risk of carbon monoxide entering the cabin and loss of engine/electrical power. It applies to serial numbers P21000001–P21000811 except aircraft fitted with a complete inconel exhaust assembly; compliance relies on Cessna Service Information Letters cited in the Directive."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":true,"description":"This is Amendment 2, which narrows the original scope by excluding aircraft fitted with complete inconel exhaust systems. The original directive likely applied to all P210N aircraft in the serial number range; this amendment creates an exception for those with the upgraded exhaust system, reducing regulatory burden on operators who have already made the safety improvement."},"complexity_factors":["Single, clearly defined applicability clause with serial number range and parts-based exclusion","Straightforward two-stage compliance requirement (initial 25 hours, then recurring 50 hours)","Only 2 defined document references (Cessna SIL SE82-3 and Supplement No. 1)","Single amendment purpose clearly stated (excluding inconel-equipped aircraft)","No nested conditional logic or cross-references to other legislation sections","Short document (approximately 150 words of substantive text)"],"plain_english_summary":"This AD requires owners/operators of Cessna P210N aircraft (serials P21000001–P21000811) to inspect the engine exhaust system for leaks and defects within 25 flight hours after 31 Dec 1982 (if not already done) and thereafter every 50 flight hours, unless the aircraft has the complete inconel exhaust installation. It’s aimed at preventing carbon‑monoxide poisoning, engine failure, and electrical loss; follow Cessna Service Letters SE82‑3 and its Supplement No.1."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-210-52-amdt-2-engine-exhaust-system-inspection","history":"/api/acts/ad-cessna-210-52-amdt-2-engine-exhaust-system-inspection/history","analysis":"/api/acts/ad-cessna-210-52-amdt-2-engine-exhaust-system-inspection/analysis","conflicts":"/api/acts/ad-cessna-210-52-amdt-2-engine-exhaust-system-inspection/conflicts","importantCases":"/api/acts/ad-cessna-210-52-amdt-2-engine-exhaust-system-inspection/important-cases","documents":"/api/acts/ad-cessna-210-52-amdt-2-engine-exhaust-system-inspection/documents"}}