Overview

The Civil Aviation Safety Regulations 1998 were enacted to establish the legal framework for ensuring the safety of civil aviation in Australia. They provide the authority for the issuance of Airworthiness Directives, which are critical in addressing specific safety concerns or deficiencies in aircraft. The regulations are administered by the Civil Aviation Safety Authority (CASA), which is tasked with ensuring that all aviation operations within Australia meet the necessary safety standards. One such directive, AD/PC-12/44 issued in 2004, was introduced to address a safety issue identified in the main landing gear actuators of the Pilatus PC-12 Series Aeroplanes. This directive was issued in response to the discovery that certain components of the main landing gear actuators had undergone incorrect heat treatment during manufacture, potentially reducing the fatigue life of the actuators. The directive mandates that corrective actions be taken in accordance with specific service bulletins to ensure the continued airworthiness of the affected aircraft.

Scope and Application

The Civil Aviation Safety Regulations 1998, specifically Part 39 - 105, includes the Airworthiness Directive issued by the Civil Aviation Safety Authority (CASA). This particular Airworthiness Directive AD/PC-12/44 pertains to Pilatus PC-12 Series aeroplanes with serial numbers ranging from MSN 101 to MSN 560 and equipped with specific main landing gear actuators. The directive mandates corrective action to address an unsafe condition identified in certain components of the main landing gear actuators due to incorrect heat treatment during manufacture, which may reduce the fatigue life of these components. The directive requires compliance with Pilatus Aircraft PC-12 Service Bulletin No. 32-017, dated 3 August 2004, or subsequent revisions approved by the Federal Office for Civil Aviation (FOCA) of Switzerland. The action must be completed before the affected main landing gear actuators accumulate 1,000 hours of total service time, but no later than 12 months from 28 October 2004. This directive applies nationally within Australia and aligns with international safety standards set by Switzerland’s FOCA.

Key Provisions

The Civil Aviation Safety Regulations 1998, specifically under Part 39 - 105, outlines the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives. In this context, section 39.1 (1) empowers the CASA delegate to issue Airworthiness Directives (AD) to address safety concerns in aircraft or aeronautical products. The AD for the Pilatus PC-12 Series Aeroplanes, identified as AD/PC-12/44, mandates corrective actions to be taken for specific aircraft models and serial numbers due to identified unsafe conditions. The AD/PC-12/44 applies to all Model PC-12 and PC-12/45 aircraft with serial numbers from MSN 101 through MSN 560, and those equipped with certain main landing gear actuators. Specifically, it targets actuators with part number 960.30.01.103 and serial numbers from 830E to 881E. The requirement necessitates adherence to Pilatus Aircraft PC-12 Service Bulletin No. 32-017, dated 3 August 2004, or any subsequent revisions approved by the Federal Office for Civil Aviation (FOCA) of Switzerland. The directive refers to Switzerland FOCA AD HB-2004-330 for additional context. The obligations imposed by this AD include ensuring the corrective action is implemented before the affected main landing gear actuators accumulate 1,000 hours of total time in service, but no later than 12 months after the AD's effective date of 28 October 2004. Compliance with this directive is critical for maintaining the airworthiness of the specified aircraft. Failure to adhere to the requirements may result in the aircraft being considered unairworthy, which could lead to severe operational restrictions and potential enforcement actions by CASA. In the event of non-compliance with this AD, the consequences can be significant. CASA may take enforcement actions which can include grounding the aircraft, fines, or other penalties. The specific penalties and consequences for non-compliance are outlined in the broader regulatory framework, which may include substantial monetary fines and legal repercussions under the Civil Aviation Act 1988. The maximum penalties can vary based on the severity and extent of the non-compliance.