AD/LEARJET/30 Amdt 2 - Flap System and Flap Sector Mounting Brackets

Overview

The Civil Aviation Regulations 1998, enacted by the Australian Government, were established to provide comprehensive regulations for the safe operation of civil aircraft in Australia. A key part of these regulations is the schedule of airworthiness directives, which address specific issues to ensure the safety and airworthiness of aircraft. The Civil Aviation Safety Authority is the body responsible for issuing these directives, which include the AD/LEARJET/30 amendment related to Gates Learjet 24 & 25 series aeroplanes. This particular directive was introduced to address the problem of cracking in the flap sector mounting brackets of these aircraft, a significant safety concern that needed rectification. The policy objective is to ensure the ongoing safety and reliability of these aircraft by mandating specific modifications within a set timeframe, thereby preventing potential in-flight failures and enhancing overall aviation safety. The AD/LEARJET/30 amendment 2, issued under the Civil Aviation Regulations 1998, aims to resolve the issue of flap sector mounting bracket cracking in Gates Learjet 24 & 25 series aeroplanes. This directive requires modifications to be made in accordance with the Gates Learjet Service Bulletin AMK 86-4, replacing the aluminium brackets with steel items to mitigate the risk of further cracking. The compliance period mandates these modifications within 100 hours of time in service or at the next inspection for Maintenance Release issue after 31 January 1987, whichever is later. This directive effectively addresses the identified safety issue and terminates any further requirements related to the previous problem, ensuring that the affected aircraft meet the necessary safety standards.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105 under the Civil Aviation Safety Authority's schedule of airworthiness directives, applies to all model Learjet 24 and 25 series aeroplanes with serial numbers listed in the requirement documents. This directive mandates modifications to the flap system and flap sector mounting brackets to address an issue of cracking in the original aluminium brackets. The requirement is for operators to modify their aircraft in accordance with Gates Learjet Service Bulletin AMK 86-4, replacing the aluminium brackets with steel ones. The compliance deadline is within 100 hours of time in service or at the next inspection for Maintenance Release issue after 31 January 1987, whichever is later. This directive aims to enhance the safety and durability of the affected aircraft by eliminating the issue of bracket cracking, ensuring that the modified components adhere to the safety standards set forth by the Civil Aviation Safety Authority.

Key Provisions

The Civil Aviation Regulations 1998, specifically under Part 39, Section 105, include the Civil Aviation Safety Authority Schedule of Airworthiness Directives for Gates Learjet 24 & 25 Series Aeroplanes. One such directive, AD/LEARJET/30 Amendment 2, pertains to the flap system and flap sector mounting brackets of affected aircraft. This amendment mandates modifications to the specified aeroplanes to ensure continued airworthiness. The applicable aircraft are those with serial numbers listed in the requirement documents (Part 39, Section 105, AD/LEARJET/30 Amdt 2). The requirement is to modify the flap system and mounting brackets in accordance with Gates Learjet Service Bulletin AMK 86-4 (Part 39, Section 105, AD/LEARJET/30 Amdt 2). This directive was issued to address the issue of cracking in the flap sector mounting brackets. The compliance deadline is within 100 hours of time in service or at the next inspection for maintenance release issue after 31 January 1987, whichever is later (Part 39, Section 105, AD/LEARJET/30 Amdt 2). The obligations imposed on the parties or entities governed by this Act include ensuring that all modifications to the flap system and mounting brackets are performed in accordance with the specified service bulletin (Part 39, Section 105, AD/LEARJET/30 Amdt 2). Operators of the affected aircraft must ensure that the required modifications are completed within the stipulated timeframe, either within 100 hours of time in service or at the next maintenance release inspection after 31 January 1987, whichever is later (Part 39, Section 105, AD/LEARJET/30 Amdt 2). Furthermore, maintenance providers and aviation authorities must ensure that the modifications are performed correctly and that the aircraft is returned to service only after the required compliance has been achieved (Part 39, Section 105, AD/LEARJET/30 Amdt 2). The consequences of non-compliance with this Airworthiness Directive can be severe. Operating an aircraft that does not comply with the specified modifications may result in safety hazards and potential violations of civil aviation regulations. Such violations may lead to enforcement actions, including fines and potential criminal charges. The maximum penalties for non-compliance with Civil Aviation Regulations can include substantial fines and, in cases of serious violations, imprisonment. The specific penalties depend on the severity of the non-compliance and the discretion of the court. Operators must ensure that they adhere to the compliance deadlines and perform the required modifications to avoid these consequences (Part 39, Section 105, AD/LEARJET/30 Amdt 2).