AD/CESSNA 336/5 - Fuel Quantity Gauge Cooling - Modification

Overview

The Civil Aviation Regulations 1998, enacted by the Commonwealth of Australia, address various aspects of civil aviation safety, including the establishment of standards for aircraft maintenance and operations. The legislation aims to ensure that all civil aviation activities within Australian jurisdiction are conducted in a manner that protects the public and promotes safe and efficient use of airspace. One specific aspect of these regulations is the issuance of Airworthiness Directives (ADs), such as AD/CESSNA 336/5, which mandates modifications to ensure the continued airworthiness of specific aircraft models. This particular AD, issued by the Civil Aviation Safety Authority (CASA), targets Cessna 336 Series Aeroplanes and requires a modification to the fuel quantity gauge cooling system. The directive was introduced to address a safety concern identified in the operation of these aircraft, ensuring that the aircraft remain compliant with safety standards within a specified timeframe. The policy objective of AD/CESSNA 336/5 is to mitigate the risk associated with inadequate cooling of the fuel quantity gauge, which could potentially lead to inaccurate fuel readings and subsequent safety hazards. By mandating a compliance period of within 200 hours of time in service after 31 May 1971, CASA ensures that operators of Cessna 336 Series Aeroplanes implement the necessary modifications in a timely manner, thereby maintaining the integrity and safety of the aircraft. This legislative instrument is a part of the broader regulatory framework designed to uphold the highest safety standards in Australian civil aviation.

Scope and Application

The Civil Aviation Regulations 1998, as amended, apply to all entities and persons involved in the operation of Cessna 336 Series aeroplanes within the jurisdiction of the Commonwealth of Australia. This includes aircraft owners, operators, and maintenance providers who must adhere to the specific airworthiness directives outlined in Part 39, particularly AD/CESSNA 336/5, which addresses the fuel quantity gauge cooling modification. This directive applies universally to all models within the Cessna 336 series and mandates compliance within 200 hours of time in service after 31 May 1971. The regulations extend their reach across Australia, ensuring that the required modifications are implemented nationally to maintain safety standards. Exclusions or exemptions are not specified in the directive, implying that all applicable aircraft must conform to the stipulated requirements without exception. The application of these regulations may also be extended or further detailed through subordinate instruments issued by the Civil Aviation Safety Authority.

Key Provisions

The primary operative sections of this legislation, specifically Part 39, section 105 of the Civil Aviation Regulations 1998, pertain to the issuance of Airworthiness Directives (ADs) for the Cessna 336 Series Aeroplanes. Section 105 mandates that all Cessna 336 models must comply with the AD/CESSNA 336/5, which focuses on modifying the fuel quantity gauge cooling system. This directive applies universally across all models of the Cessna 336 series, as stipulated in the document Cessna SL ME70-24. Compliance with this AD is required within 200 hours of time in service after 31 May 1971. The obligations and requirements imposed by this AD are clear and specific. Operators of Cessna 336 aeroplanes must ensure that the fuel quantity gauge cooling modification is completed as outlined in the document Cessna SL ME70-24. This involves modifying the fuel quantity gauge cooling system to meet the safety standards set forth by the Civil Aviation Safety Authority (CASA). Operators must maintain records of these modifications, including documentation of the time in service and compliance dates, to demonstrate adherence to the AD. Failure to comply with these requirements may result in the aeroplane being deemed non-airworthy. The legislation also outlines potential offences and consequences for non-compliance with the AD/CESSNA 336/5. Operators who fail to comply with the specified modifications within the mandated timeframe may face enforcement actions by CASA. The consequences of non-compliance can include fines and other penalties, with the exact penalties determined according to the severity of the breach and the specific provisions of the Civil Aviation Act 1988. In cases where non-compliance poses a significant safety risk, CASA may also take more stringent actions, such as grounding the aeroplane until the required modifications are made. In summary, the AD/CESSNA 336/5 under the Civil Aviation Regulations 1998 requires operators of Cessna 336 series aeroplanes to modify the fuel quantity gauge cooling system within 200 hours of time in service after 31 May 1971. Compliance involves adhering to the specifications outlined in the Cessna SL ME70-24 document and maintaining proper records of these modifications. Non-compliance can result in enforcement actions, fines, and other penalties, with the potential for more severe consequences if the non-compliance poses a significant safety risk.