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/22 Aft Engine Beam Pylon Bolts - Inspection 5/80
Applicability: All model 23 S/Nos. 23-003 to 23-099;
All model 24 S/Nos. 24-100 to 24-357;
All model 25 S/Nos. 25-003 to 25-286 and 25-288.
Document: Gates Learjet SB 23/24/25-299. Compliance: As per requirement document.
Background: To ensure that the aft engine beam pylon bolts are secure and properly torqued.
Overview
The Civil Aviation Regulations 1998, enacted by the Australian Parliament, were established to ensure the safety and efficiency of civil aviation within the country. Specifically, Part 39 - 105 of these regulations pertains to the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, addressing critical safety measures for various aircraft models. One such directive, AD/LEARJET/22, was introduced to address the specific issue of ensuring the security and proper torque of the aft engine beam pylon bolts on Gates Learjet 24 and 25 series aeroplanes. This directive applies to specific serial numbers of these models and mandates compliance with the Gates Learjet SB 23/24/25-299 document, which outlines the necessary inspection and maintenance procedures. The overarching policy objective is to enhance the safety and reliability of these aircraft by ensuring that all critical components are maintained to the highest standards.
Scope and Application
The Civil Aviation Regulations 1998, under Part 39, specifically address airworthiness directives pertaining to aircraft, including Gates Learjet 24 and 25 series aeroplanes. This particular regulation, AD/LEARJET/22, applies to the inspection of aft engine beam pylon bolts for specific serial numbers within the mentioned models. This regulation targets the inspection of certain serial numbers of Gates Learjet 24 and 25 aeroplanes to ensure the aft engine beam pylon bolts are secure and properly torqued, thereby maintaining compliance with safety standards. The regulation is geographically applicable within the Commonwealth of Australia, with enforcement managed by the Civil Aviation Safety Authority (CASA). The regulation does not specify any exclusions or exemptions within its stated scope, and compliance must be achieved as per the requirements detailed in the Gates Learjet Service Bulletin 23/24/25-299. Subordinate instruments may further define specific implementation details and additional requirements to ensure adherence to this airworthiness directive.
Key Provisions
The Civil Aviation Regulations 1998, specifically in Part 39 - 105 (subsections AD/LEARJET/22), mandates the inspection of the aft engine beam pylon bolts on Gates Learjet 24 and 25 series aeroplanes. This directive applies to all model 23 serial numbers 23-003 to 23-099, all model 24 serial numbers 24-100 to 24-357, and all model 25 serial numbers 25-003 to 25-286 and 25-288. Compliance with this Airworthiness Directive is achieved through the requirements set out in Gates Learjet Service Bulletin 23/24/25-299. The overarching objective of these provisions is to ensure that the aft engine beam pylon bolts are secure and properly torqued to maintain the aircraft's safety and airworthiness.
Operators of Gates Learjet 24 and 25 series aeroplanes are required to conduct thorough inspections of the aft engine beam pylon bolts as per the guidance in Gates Learjet SB 23/24/25-299. This involves verifying that each bolt is properly torqued and secured, in accordance with the manufacturer's specifications. Operators must maintain detailed records of all inspections performed, including the date of the inspection, the serial number of the aircraft, and the results of the inspection. These records must be readily accessible for review by the Civil Aviation Safety Authority (CASA) upon request.
Failure to comply with the requirements outlined in the Civil Aviation Regulations 1998, specifically AD/LEARJET/22, may result in significant consequences. Non-compliance could lead to the grounding of the affected aircraft until the required inspections and necessary repairs are completed. Furthermore, operators may face civil penalties under section 159 of the Civil Aviation Act 1988, which can include fines of up to $10,000 per offence. In more severe cases, criminal charges may be brought against responsible individuals, with potential penalties including fines of up to $210,000 and imprisonment for up to two years. These stringent measures underscore the importance of adhering to the specified inspection and maintenance requirements to ensure the safety and airworthiness of the aircraft.