AD/CESSNA 206/10 - Exhaust Manifold Heat Exchanger

Overview

The Civil Aviation Regulations 1998, enacted by the Commonwealth of Australia, were introduced to regulate civil aviation safety across the nation, ensuring compliance with international standards. Specifically, Part 39 - 105 of these regulations addresses the issue of airworthiness directives, which are legally enforceable rules aimed at correcting an unsafe condition on an aircraft. This particular legislative instrument, F2006B05215, pertains to Cessna 206 Series Aeroplanes and mandates actions concerning the exhaust manifold heat exchanger, as outlined in AD/CESSNA 206/10. The directive applies to all model TU206 and TP206 aircraft and requires compliance with Cessna Service Letter No. SE71-11. The policy objective is to mitigate safety risks by ensuring that the specified maintenance actions are performed within the stipulated timeframes. The regulations, as part of the legislative framework overseen by the Civil Aviation Safety Authority, were designed to address specific safety concerns related to the exhaust manifold heat exchanger of the Cessna 206 Series aeroplanes. The directive requires that maintenance actions be completed within 50 hours of time in service after 9 June 1971 and at subsequent intervals not exceeding 50 hours. This proactive approach ensures ongoing airworthiness and safety of these aircraft by adhering to specified service letters and compliance timelines.

Scope and Application

The Civil Aviation Regulations 1998, specifically under Part 39 - 105, establish the requirements for maintaining the airworthiness of aircraft operating in Australian airspace. This legislative instrument pertains to all model TU206 and TP206 Cessna 206 Series aeroplanes, imposing mandatory actions concerning the exhaust manifold heat exchanger as detailed in Cessna Service Letter No. SE71-11. Compliance with these airworthiness directives must be achieved within 50 hours of time in service following 9 June 1971, and subsequently, at intervals not exceeding 50 hours of time in service. This ensures that all specified aircraft meet the safety standards set forth by the Civil Aviation Safety Authority (CASA). The geographical scope of this regulation applies across the Commonwealth of Australia, thereby encompassing all state, territory, and national operations involving the affected Cessna 206 models. No exclusions, exemptions, or specific thresholds are noted within the scope of this directive, although further elaboration on implementation and enforcement may be provided through subordinate instruments issued by CASA.

Key Provisions

The Civil Aviation Regulations 1998, under PART 39 - 105, includes a schedule of airworthiness directives specifically for the Cessna 206 series aeroplanes. The directive AD/CESSNA 206/10 addresses the exhaust manifold heat exchanger for all model TU206 and TP206 aircraft. The requirement outlined in this directive mandates that the action be taken in accordance with Cessna Service Letter (SL) No. SE71-11. This action must be completed within 50 hours of time in service after the directive's effective date, 9 June 1971, and subsequently at intervals not exceeding 50 hours of time in service. Operators of the specified Cessna 206 models are required to comply with the directive by following the steps detailed in the Cessna Service Letter. This involves inspecting and, if necessary, replacing or repairing the exhaust manifold heat exchanger as specified in the service letter. Compliance must be achieved within the stipulated timeframe, which is 50 hours of time in service following the directive's implementation and then at regular intervals not exceeding 50 hours of time in service thereafter. This ensures that the heat exchanger is maintained in a safe and operational condition to prevent potential issues related to exhaust system integrity. Failure to comply with the airworthiness directive can result in serious consequences. Non-compliance may lead to the aircraft being deemed unairworthy, which can prevent it from operating until the required maintenance is performed. Additionally, operators who do not adhere to the specified maintenance intervals and requirements may face regulatory action by the Civil Aviation Safety Authority (CASA). This could include fines, enforcement actions, or other penalties as determined by CASA. The Civil Aviation Regulations 1998 also impose specific obligations on aircraft operators to ensure ongoing compliance with airworthiness directives. Operators must maintain accurate records of all maintenance actions taken in accordance with these directives, including dates, details of the work performed, and signatures of the personnel involved. These records must be kept accessible for inspection by CASA inspectors. The regulations also require operators to ensure that their maintenance personnel are adequately trained and certified to perform the required maintenance tasks.