AD/LEARJET 35/17 - Cabin Interior Liner in Areas of Emergency Exit Door - Inspection

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of the Commonwealth of Australia, form a comprehensive regulatory framework governing civil aviation within the country. Among the various provisions outlined in these regulations, Part 39 specifically addresses airworthiness directives aimed at ensuring the safety and reliability of aircraft. This part includes a directive concerning Gates Learjet 35 and 36 series aeroplanes, which was introduced to address the problem of cabin interior liners potentially interfering with the operation of emergency exit doors. The objective of this directive, as articulated in the document, is to mandate the inspection of the cabin interior liner in areas adjacent to emergency exit doors to prevent any obstruction that might hinder the functionality of these critical safety features. The specific directive, AD/LEARJET 35/17, targets Learjet 35 and 36 series aircraft with certain serial numbers and mandates compliance by the next periodic inspection following 30 January 1981. This directive is grounded in the overarching goal of enhancing aviation safety by ensuring that all aircraft meet stringent airworthiness standards. The directive references a Service Bulletin from Gates Learjet dated 4 November 1980, underscoring the importance of adhering to manufacturer guidelines to maintain the structural integrity and operational safety of the aircraft.

Scope and Application

The Civil Aviation Regulations 1998, under Part 39 - 105, specifically address airworthiness directives pertaining to certain aircraft models, such as the Gates Learjet 35 and 36 series aeroplanes. This particular directive, AD/LEARJET 35/17, applies to aircraft with specific serial numbers within the 35 and 36 series, ensuring that the cabin interior liner in areas of the emergency exit door does not interfere with the operation of these exits. The directive is designed to enhance safety by mandating an inspection of the specified areas at the next periodic inspection following 30 January 1981. The directive references Gates Learjet Service Bulletin 35/36-52-5 dated 4 November 1980, which provides the technical guidance for compliance. This regulation extends to aircraft registered and operated within Australia, overseen by the Civil Aviation Safety Authority (CASA), and applies nationally to ensure consistent safety standards across the aviation industry. There are no stated exclusions or exemptions within the directive itself, although the application may be subject to further interpretation or clarification through subordinate instruments issued by CASA.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105 under the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, detail the mandatory compliance for Gates Learjet 35 and 36 series aircraft. The directive AD/LEARJET 35/17 (section 2/81) mandates that all Gates Learjet 35 and 36 series aircraft with serial numbers ranging from 35-001 to 35-332, 35-334, 35-335, 35-336, 35-339, 35-340, and 36-001 to 36-045 must comply with the specified requirements. The directive is documented in Gates Learjet Service Bulletin 35/36-52-5 dated 4 November 1980, and compliance must be achieved at the next periodic inspection following 30 January 1981. The primary objective of this directive is to ensure that the cabin interior liner does not interfere with the operation of emergency exit doors. Operators of the specified Gates Learjet 35 and 36 series aircraft must adhere to the outlined requirements to maintain airworthiness. This includes inspecting the cabin interior liner to verify that it does not obstruct or impede the emergency exit doors. The inspection must be conducted during the next periodic maintenance check after the specified date, ensuring that all necessary adjustments or modifications are made as per the directive to meet the safety standards set by CASA. Operators are also required to document the inspection and any corrective actions taken, maintaining thorough records to demonstrate compliance. Failure to comply with the directive AD/LEARJET 35/17 may result in significant consequences. The Civil Aviation Regulations 1998 impose penalties for non-compliance with airworthiness directives. Operators who do not adhere to the specified inspection and corrective action requirements risk facing civil penalties, including fines and potential grounding of the aircraft. In more severe cases, criminal charges could be brought against individuals responsible for the oversight, leading to imprisonment. The precise penalties depend on the nature and severity of the non-compliance, but the overarching aim is to enforce strict adherence to safety regulations to protect passengers and crew.