COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Gates Learjet 24 & 25 Series Aeroplanes
AD/LEARJET/9 Spoiler Actuator Bracket And Bushing - Inspection
5/75
Applicability: All model 24 with S/Nos. 24-269 to 24-312, all model 25 with S/Nos. 25-115 to 25- 186, and other aeroplanes with Kit No. AMK 73-1 fitted.
Document: Gates Learjet SB 24/25-261.
Compliance: Within 100 hours time in service after 30 June 1975.
Overview
The Civil Aviation Regulations 1998, enacted by the Australian Parliament, serve as the primary regulatory framework governing civil aviation within Australia. Among these regulations, Part 39 specifically pertains to the airworthiness directives, ensuring that all aircraft meet the necessary safety standards for operation. One such directive, AD/LEARJET/9, was introduced to address the issue of potential structural failures in the spoiler actuator bracket and bushing of Gates Learjet 24 and 25 series aeroplanes. This directive applies to specific serial numbers of these models and requires a mandatory inspection to be conducted within 100 hours of time in service after 30 June 1975, as outlined in Gates Learjet Service Bulletin 24/25-261. The policy objective behind this legislation is to enhance the safety and reliability of the affected aircraft, thereby protecting passengers, crew, and the general public from potential hazards associated with structural failures.
Scope and Application
The Civil Aviation Safety Authority (CASA) Regulations 1998, specifically PART 39 - 105, mandate the inspection of spoiler actuator brackets and bushings on Gates Learjet 24 and 25 Series aeroplanes as per Airworthiness Directive AD/LEARJET/9. This directive applies to all model 24 aircraft with serial numbers ranging from 24-269 to 24-312, all model 25 aircraft with serial numbers from 25-115 to 25-186, and other aeroplanes fitted with Kit No. AMK 73-1. The inspection must be conducted within 100 hours of time in service after 30 June 1975, as referenced in Gates Learjet Service Bulletin 24/25-261. This regulation is binding under the Commonwealth of Australia and applies to all aircraft meeting the specified criteria, irrespective of the operator or the location within Australia. The directive does not provide for any exclusions, exemptions, or thresholds beyond the specified serial numbers and service time, ensuring that all applicable aircraft adhere to the prescribed safety measures. Subordinate instruments may further detail implementation procedures but do not extend the scope beyond the outlined requirements.
Key Provisions
The Civil Aviation Regulations 1998 (Cth), specifically Part 39 - 105, mandates airworthiness directives for certain aircraft, including the Gates Learjet 24 and 25 series aeroplanes. Section 39 - 105 AD/LEARJET/9 addresses the inspection of the spoiler actuator bracket and bushing, as outlined in Gates Learjet Service Bulletin 24/25-261 (AD/LEARJET/9(5/75)). This directive applies to all model 24 Learjets with serial numbers ranging from 24-269 to 24-312, all model 25 Learjets with serial numbers from 25-115 to 25-186, and other aeroplanes equipped with Kit No. AMK 73-1. The compliance requirement mandates that the specified inspection be completed within 100 hours of time in service following 30 June 1975.
The obligations under this airworthiness directive are specific to the affected aircraft models and serial numbers. Operators and owners of these aircraft must ensure that the inspection of the spoiler actuator bracket and bushing is performed according to the procedures outlined in Gates Learjet Service Bulletin 24/25-261. This involves detailed checks and potentially repairs or replacements as deemed necessary by qualified technicians. Additionally, operators must maintain accurate records of these inspections, ensuring traceability and compliance with regulatory requirements. The directive aims to maintain the safety and airworthiness of the aircraft by addressing potential structural issues early.
Failure to comply with the airworthiness directive can lead to serious consequences. Under the Civil Aviation Act 1988 (Cth) and associated regulations, non-compliance can result in enforcement actions by the Civil Aviation Safety Authority (CASA). Potential penalties include fines, suspension or revocation of the aircraft's certificate of airworthiness, and other administrative actions. For repeat or serious violations, CASA may refer cases to the Australian Federal Police for further investigation and potential criminal prosecution. The specific penalties vary depending on the severity and nature of the breach, with maximum fines and imprisonment possible in the most severe cases.