AD/PC-6/17 - Landing Gear Strut - Modification

Overview

The Civil Aviation Regulations 1998, enacted by the Australian Government, provide comprehensive rules and standards for civil aviation safety within Australia. Part 39, specifically addressing the Australian Civil Aviation Safety Authority's (CASA) schedule of airworthiness directives, ensures that aircraft meet required safety standards. One such directive, AD/PC-6/17, pertains to the Pilatus Porter PC-6 Series aeroplanes, requiring modifications to the landing gear strut for all models prior to serial number 570. This directive was introduced to address identified safety issues with the landing gear strut, ensuring compliance and enhancing the overall safety of these aircraft in operation. The policy objective behind these regulations is to maintain high safety standards in civil aviation, thereby protecting the public and ensuring the integrity of the aviation industry. The Civil Aviation Regulations 1998, administered by CASA, play a crucial role in maintaining and improving aviation safety across Australia. Through specific airworthiness directives like AD/PC-6/17, CASA mandates modifications to address identified safety concerns, such as the landing gear strut issue in the Pilatus Porter PC-6 Series aeroplanes. This legislative instrument ensures that all aircraft meet stringent safety criteria, thereby safeguarding the public and upholding the reliability of Australia’s civil aviation sector. The regulations were enacted by the Australian Parliament, reflecting a commitment to ensuring the highest standards of aviation safety.

Scope and Application

The Civil Aviation Regulations 1998, specifically under Part 39 - 105, pertain to the Civil Aviation Safety Authority’s Schedule of Airworthiness Directives, addressing the Pilatus Porter PC-6 Series Aeroplanes. This directive, identified as AD/PC-6/17, applies to all models of the Pilatus Porter PC-6 Series aeroplanes that have a serial number prior to 570. This regulation is enforced by the Civil Aviation Safety Authority and impacts any person or entity that operates these specific models of aircraft within Australia and its territories. The directive mandates that a specific modification to the landing gear strut, as outlined in Pilatus Service Bulletin No. 35, must be implemented prior to 2 November 1967, to ensure compliance with airworthiness standards. This directive does not explicitly mention exclusions, exemptions, or thresholds, and its application is limited to the specified models and serial numbers. The regulation may also extend its application through subordinate instruments, which can provide further clarification and operational guidelines.

Key Provisions

The Civil Aviation Regulations 1998, particularly PART 39 - 105, provides specific directives for ensuring the airworthiness of Pilatus Porter PC-6 Series Aeroplanes through the Airworthiness Directives (AD) issued by the Civil Aviation Safety Authority (CASA). Section AD/PC-6/17 focuses on the modification of the landing gear struts for all models prior to serial number 570 (Section 1). This directive mandates the implementation of modifications detailed in Pilatus Service Bulletin No. 35 to enhance the safety and reliability of the landing gear system (Section 2). Under this legislation, the primary obligation falls on aircraft operators and maintenance personnel to comply with the specified modifications. They must ensure that the modifications are completed and documented in accordance with the provided service bulletin before 2 November 1967 (Section 3). This includes conducting necessary inspections, performing the required modifications, and maintaining accurate records of compliance to demonstrate adherence to the AD. Failure to comply with the AD/PC-6/17 could result in serious legal and operational consequences. CASA has the authority to take action against non-compliant aircraft, which could include grounding the aircraft or imposing fines and penalties. The specific penalties are detailed in the Civil Aviation Act 1988 and related regulations, which may include substantial fines and potential criminal charges for serious non-compliance. The exact penalties depend on the severity of the breach and the discretion of the court. Moreover, non-compliance not only risks regulatory penalties but also poses significant safety hazards. Aircraft that do not meet the required modifications are likely to face operational restrictions, potentially leading to flight cancellations and financial losses for the operators. Ensuring adherence to AD/PC-6/17 is, therefore, crucial for maintaining the safety standards and operational integrity of Pilatus Porter PC-6 Series Aeroplanes in Australian airspace.