AD/SD3-60/29 - Pitot Static Heaters

Overview

The Civil Aviation Regulations 1998, administered by the Civil Aviation Safety Authority (CASA), were enacted to ensure the safety and efficiency of civil aviation in Australia. The 1998 Regulations provide a comprehensive framework for the operation of civil aviation and include detailed provisions for the airworthiness of aircraft. Part 39 specifically deals with airworthiness directives, which are mandatory safety regulations issued by CASA to address specific safety issues. One such directive is AD/SD3-60/29, which applies to Shorts SD3-60 series aeroplanes with serial numbers SH3601 to SH3760. This directive was introduced to address the problem of pitot heat loss when a generator fails, a critical safety concern that was also identified by the UK Civil Aviation Authority (CAA) as mandatory. The policy objective of this directive is to ensure that the pitot static heaters are properly maintained to prevent potential loss of critical flight data, thus enhancing flight safety. The directive requires compliance at the next 'D' check or after 4800 flight hours, whichever occurs later, following a specified date (30 November 1990). This regulatory approach ensures that the necessary maintenance is carried out in a timely manner, minimising the risk of accidents due to the failure of pitot heat systems. The legislation underscores the importance of adhering to international safety standards and the collaborative efforts of regulatory bodies to maintain high safety standards in civil aviation.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, applies to all Short SD3-60 series aeroplanes with serial numbers ranging from SH3601 to SH3760 inclusive. These regulations mandate the compliance with Airworthiness Directive SD3-60/29 concerning the installation and operation of pitot static heaters. This requirement is a direct response to a safety bulletin issued by Shorts SD3-60, identified as SB SD360-24-18, and aligns with the mandatory directives set by the United Kingdom Civil Aviation Authority. Compliance with these directives must be ensured at the next 'D' check or 4800 flight hours after 30 November 1990, whichever comes later, aiming to prevent the failure of pitot heat in the event of a generator malfunction. The geographic and jurisdictional reach of these regulations extends across the Commonwealth of Australia, ensuring uniform safety standards are met within the national airspace. The application of these regulations is not limited by state or territory boundaries, thus enforcing a consistent approach to airworthiness across all regions under Commonwealth jurisdiction.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, mandates adherence to the Civil Aviation Safety Authority’s (CASA) Schedule of Airworthiness Directives. This particular directive, AD/SD3-60/29, pertains to Shorts SD3-60 series aeroplanes with serial numbers SH3601 to SH3760 inclusive. According to section (10/90), the directive requires compliance with Shorts SD3-60 Service Bulletin SD360-24-18, which was issued by the United Kingdom's Civil Aviation Authority (CAA) and is noted as mandatory. This requirement aims to ensure that the pitot static heaters in the specified aircraft are maintained and functional to prevent the loss of pitot heat when a generator fails. The directive imposes several obligations on the aircraft operators and maintenance personnel. Firstly, they must ensure that the modifications and checks outlined in Shorts SD3-60 Service Bulletin SD360-24-18 are carried out. Specifically, the directive mandates compliance at the next 'D' check or after 4800 flight hours following 30 November 1990, whichever comes later. This means that operators need to schedule and perform the required inspections and maintenance to meet the directive's compliance criteria. Failure to do so can lead to non-compliance with the regulations, potentially resulting in safety hazards. The Civil Aviation Regulations 1998 also stipulate consequences for non-compliance with the airworthiness directives. Any breach of the requirements outlined in AD/SD3-60/29 may lead to enforcement actions under the regulations. Civil penalties can include fines, and in severe cases, aircraft may be grounded until compliance is achieved. Furthermore, the directive’s non-compliance could lead to criminal charges against individuals or corporations responsible for the oversight of the aircraft, resulting in substantial fines or even imprisonment. The severity of the penalties reflects the critical nature of maintaining airworthiness standards to ensure flight safety.