COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Cessna 180, 182 and Wren 460 Series Aeroplanes
AD/CESSNA 180/65 Cylinder Head Temperature Probe 8/82
Applicability: Model 182 with S/Nos. 18268161 to 18268221 except 18268217. Requirement: Action in accordance with Cessna SIL No. SE82-22.
Compliance: Within 100 hours time in service after 31 August 1982.
Background: It has been established by the airframe manufacturer that the hottest cylinder during most critical flight stages is cylinder No. 3 as distinct from cylinder No. 5 where the temperature probe is currently located.
Overview
The Civil Aviation Regulations 1998, enacted by the Parliament of the Commonwealth of Australia, form the legal framework governing all aspects of civil aviation within Australia. These regulations were introduced to ensure the safety and efficiency of civil aviation operations, addressing gaps in regulatory oversight to maintain high standards of airworthiness and operational safety. One particular legislative instrument, F2006B05077, pertains to Airworthiness Directives for specific aircraft models, such as the Cessna 180, 182, and Wren 460 series aeroplanes. This instrument was introduced to address identified safety issues by mandating specific actions to rectify deficiencies in aircraft design or maintenance. For instance, AD/CESSNA 180/65 specifies a requirement for the installation of a cylinder head temperature probe in certain Cessna 182 models to ensure that the hottest cylinder during critical flight stages is properly monitored. Compliance with such directives is essential to maintain the airworthiness of the aircraft and protect passenger safety.
The Civil Aviation Safety Authority, under the authority granted by the Civil Aviation Act 1988, issues these Airworthiness Directives to mandate specific actions to be taken by aircraft owners and operators to ensure the ongoing airworthiness of their aircraft. The policy objective is to ensure that any identified safety issues are addressed promptly and effectively, thereby minimising the risk of accidents and maintaining the highest standards of aviation safety.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 105 concerning the Civil Aviation Safety Authority's Schedule of Airworthiness Directives, includes provisions that apply to certain models of Cessna aeroplanes, namely the Cessna 180, 182, and Wren 460 Series. This regulation applies to Model 182 with serial numbers ranging from 18268161 to 18268221, with the exclusion of serial number 18268217. The directive mandates compliance with Cessna Service Information Letter No. SE82-22, which pertains to the installation and functionality of a cylinder head temperature probe. The requirement is that corrective action must be taken within 100 hours of the aeroplane's time in service after 31 August 1982. This directive is intended to ensure that the temperature probe is correctly positioned on cylinder No. 3, identified as the hottest cylinder during critical flight stages, rather than on cylinder No. 5 where it was originally located. The regulation’s application is confined to the specified serial numbers and model of aeroplane, and it does not extend to other models or serial numbers not listed within the directive.
Key Provisions
The Civil Aviation Regulations 1998, specifically under Part 39 - 105, set forth detailed requirements for maintaining the airworthiness of aircraft through various Airworthiness Directives (ADs). One such directive, AD/CESSNA 180/65, pertains to the Cessna 180, 182, and Wren 460 series aeroplanes. This particular directive focuses on the Cylinder Head Temperature Probe for model 182 aircraft with serial numbers ranging from 18268161 to 18268221, with the exception of serial number 18268217. The directive mandates that these aircraft must comply with Cessna Service Information Letter No. SE82-22 (section 1).
To ensure compliance, operators must take action in accordance with the specified service information letter within 100 hours of time in service after 31 August 1982 (section 2). This requirement arises from a finding by the airframe manufacturer that cylinder No. 3, rather than cylinder No. 5, experiences the highest temperatures during critical flight stages. This finding prompted the need for a temperature probe adjustment to more accurately monitor engine conditions and ensure safety.
Failure to comply with this directive can result in significant regulatory and safety consequences. The AD imposes strict obligations on aircraft operators to adhere to the specified timeframe and action to maintain the airworthiness of their aircraft. Non-compliance could lead to potential safety risks, as the inaccurate temperature readings could result in engine overheating and failure. Operators must ensure that the necessary adjustments are made within the stipulated period to avoid any breaches of the Civil Aviation Regulations.
The legislation also outlines potential civil and criminal consequences for non-compliance. While the specific penalties are not detailed within this directive, under the broader Civil Aviation Act 1988, penalties for non-compliance with airworthiness directives can include substantial fines and potential imprisonment. The severity of the penalties reflects the importance of adhering to these regulations to ensure the safety of all passengers and crew on board.