AD/LEARJET 35/3 - Lower Cabin Door Jambs - Inspection

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of the Commonwealth of Australia, form a comprehensive framework designed to ensure the safety and efficiency of civil aviation within Australia. Specifically, Part 39 - 105 of these Regulations addresses airworthiness directives, ensuring that aircraft meet the necessary safety standards to operate. This particular legislative instrument focuses on the Gates Learjet 35 and 36 series aeroplanes, mandating inspections of the lower cabin door jambs to mitigate potential safety risks. The policy objective is to enhance the structural integrity and operational safety of these aircraft, thereby protecting passengers and crew from potential hazards associated with door jamb issues. The Civil Aviation Safety Authority (CASA) is responsible for issuing these airworthiness directives, which are critical in maintaining the high safety standards expected in Australian civil aviation. The directive, identified as AD/LEARJET 35/3, applies to specific serial numbers of Gates Learjet 35 and 36 series aeroplanes and requires compliance within 75 hours of time in service after 30 April 1976. This proactive measure aims to ensure that any potential defects are identified and rectified promptly, thereby preventing incidents that could compromise the safety of air travel.

Scope and Application

The Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998 applies specific airworthiness directives to ensure the safety and operational standards of aircraft within Australia. Specifically, Part 39 - 105 mandates inspections on Gates Learjet 35 and 36 Series aeroplanes, addressing critical safety issues such as the lower cabin door jambs. This directive applies to all model 35 aircraft with serial numbers ranging from 35-001 to 35-035 and all model 36 aircraft with serial numbers from 36-001 to 36-016 equipped with the 24-inch cabin door. Compliance with these directives is required within 75 hours of time in service after 30 April 1976, as outlined in Gates Learjet Service Bulletin 35/36-52-1. The regulation ensures that these aircraft meet the necessary safety standards to operate within the Australian airspace.

Key Provisions

The main operative sections of the Civil Aviation Regulations 1998, specifically PART 39 - 105, establish Airworthiness Directives (AD) for Gates Learjet 35 and 36 series aeroplanes. Section AD/LEARJET 35/3 requires an inspection of the lower cabin door jambs for all model 35 aeroplanes with serial numbers (S/Nos.) ranging from 35-001 to 35-035, and for all model 36 aeroplanes with S/Nos. 36-001 to 36-016 equipped with the 24-inch cabin door. This inspection must be carried out in compliance with the Gates Learjet Service Bulletin (SB) 35/36-52-1 and must be completed within 75 hours of time in service after 30 April 1976. The obligations imposed by this legislation on the parties or entities it governs include ensuring that the specified inspections are conducted by qualified personnel. The inspections must be thorough and in accordance with the specified service bulletin to maintain the airworthiness of the aircraft. This requirement ensures that any potential issues with the lower cabin door jambs are identified and addressed promptly, thereby preventing safety hazards. Operators of these aircraft must maintain records of all inspections performed to demonstrate compliance with the AD. Failure to comply with the inspection requirements outlined in the AD may result in civil or criminal consequences. Section 91 of the Civil Aviation Act 1988 may be invoked, leading to enforcement actions by the Civil Aviation Safety Authority (CASA). Potential penalties for non-compliance could include fines, enforcement notices, or other corrective measures deemed appropriate by CASA. Additionally, continued operation of an aircraft that does not meet the airworthiness standards could lead to severe safety risks and further legal repercussions.