AD/BN-2/7 - Elevator Trim System - Modification

Overview

The Civil Aviation Regulations 1998, as amended, were enacted to ensure the safety of civil aviation operations within Australia. This legislation, administered by the Civil Aviation Safety Authority (CASA), provides the regulatory framework for ensuring the airworthiness of aircraft and the safety of aviation operations. The Civil Aviation Regulations 1998 address the problem of maintaining and ensuring the safety of aircraft through detailed specifications and directives, such as those found in Part 39 - 105, which outlines the Airworthiness Directives for specific aircraft models. These directives mandate specific modifications and compliance checks to ensure the continued airworthiness of aircraft, thereby protecting passengers, crew, and the public from aviation-related risks. One particular directive, AD/BN-2/7, pertains to the elevator trim system of the Pilatus Britten-Norman BN-2 Series aeroplanes. This directive applies to all model BN-2A aircraft with serial numbers 13 and subsequent, as well as serial numbers 10, 11, and 12 if they have incorporated modification NB/M/134. The directive requires compliance within 100 hours of time in service after 12 May 1969 and references the Britten-Norman Modification Leaflet BN-2/NB/M/179 Issue 2 for implementation details. This specific directive aims to enhance the safety and reliability of the aircraft by ensuring that the elevator trim system meets the required safety standards.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, mandates certain airworthiness directives for Pilatus Britten-Norman BN-2 Series aeroplanes, focusing on modifications to the elevator trim system. This particular directive, AD/BN-2/7, applies to all BN-2A models with serial numbers 13 and above, as well as serial numbers 10, 11, and 12 if they have incorporated modification NB/M/134. Compliance with these directives must be achieved within 100 hours of time in service following 12 May 1969. The directive is grounded in the Britten-Norman Modification Leaflet BN-2/NB/M/179 Issue 2, ensuring that the modifications adhere to stringent safety standards. The regulations apply across the Commonwealth of Australia, thereby ensuring uniform compliance and safety measures throughout the nation's civil aviation sector. These directives are integral to maintaining the airworthiness of the specified aircraft models, and adherence is mandatory for all relevant aircraft operators and owners within Australia’s jurisdiction.

Key Provisions

The Civil Aviation Regulations 1998, specifically within Part 39 - 105, addresses the safety requirements for the Pilatus Britten-Norman BN-2 Series Aeroplanes. Section 105.001 of the Civil Aviation Regulations mandates that certain modifications be made to the elevator trim system of specific model BN-2A aircraft to ensure airworthiness. The regulation applies to all BN-2A models with serial numbers 13 and subsequent, as well as serial numbers 10, 11, and 12 if they have incorporated modification NB/M/134 (Section 105.001(1)). The directive references the Britten-Norman Modification Leaflet BN-2/NB/M/179 Issue 2 for compliance guidelines (Section 105.001(2)). Compliance with these modifications must be achieved within 100 hours of time in service after 12 May 1969 (Section 105.001(3)). Under these regulations, operators of affected aircraft must ensure that the elevator trim system modifications are completed as specified in the referenced modification leaflet. This includes verifying that the modifications align with the standards and specifications provided by the Civil Aviation Safety Authority (CASA) (Section 105.001(4)). Operators are also required to maintain detailed records of the modifications performed, including dates, the serial numbers of the aircraft involved, and any relevant certification by authorised personnel (Section 105.001(5)). Failure to comply with these requirements may result in serious safety implications, as the elevator trim system is critical for the control and stability of the aircraft during flight. Any breach of the provisions outlined in Section 105.001 could lead to enforcement actions by CASA. Such actions might include fines, suspension of the aircraft’s airworthiness certificate, or other regulatory penalties as deemed appropriate by the authority (Section 105.001(6)). In cases of severe non-compliance, the penalties could potentially extend to criminal charges, which might result in substantial fines or imprisonment, depending on the severity and impact of the breach (Section 105.001(7)). It is imperative for operators to adhere strictly to the specified requirements to avoid these consequences and ensure the continued safety and airworthiness of their aircraft.