AD/SF340/70 - Fuselage Insulation Pads at Wing Aft Area

Overview

The Civil Aviation Regulations 1998, administered by the Civil Aviation Safety Authority (CASA), include a range of provisions designed to ensure the safety and airworthiness of aircraft operating in Australian airspace. Part 39 of these regulations, which pertains to specific airworthiness directives, includes Airworthiness Directive AD/SF340/70, which was enacted to address issues associated with the Saab SF340 Series aeroplanes. Specifically, this directive targets models SF340A with serial numbers SF340A-004 through -159 and Model 340B with serial numbers 340B-160 through -459, focusing on the potential for insulation pads in the lower side of the fuselage at the wing aft area to come loose and interfere with the aileron control cable segment, leading to unacceptably high control forces. The directive mandates action in accordance with the manufacturer's Service Bulletin 340-53-061, with compliance required before 31 December 1999, ensuring the continued safety and operational integrity of these aircraft. The underlying policy objective of these regulations is to maintain the highest standards of safety in civil aviation, preventing any potential hazards that could compromise the safety of passengers, crew, and the general public. By mandating specific actions in response to identified issues, the Civil Aviation Regulations 1998, along with directives such as AD/SF340/70, help ensure that aircraft remain airworthy and compliant with stringent safety standards.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, applies to the Saab SF340 Series Aeroplanes, more precisely the models SF340A and 340B with certain serial numbers, to ensure their airworthiness. The regulation mandates adherence to the actions specified in SAAB Aircraft AB Mandatory Service Bulletin 340-53-061, which addresses issues with the fuselage insulation pads in the lower side of the fuselage at the wing aft area. The requirement necessitates corrective actions to prevent the insulation pads from becoming loose, which could otherwise interfere with the aileron control cable segment and result in unacceptably high control forces. Compliance with this directive is mandatory for the specified aircraft models and serial numbers, with the action required to be completed by 31 December 1999. This directive became effective on 15 July 1999, underscoring the importance of maintaining stringent safety standards within the aviation industry. The regulation's scope is clearly defined, ensuring that all relevant entities and aircraft models are subject to these safety measures.

Key Provisions

The main operative sections of the Civil Aviation Regulations 1998, Part 39 - 105, specifically Airworthiness Directive AD/SF340/70, pertain to the Saab SF340 Series aeroplanes. This directive mandates that certain insulation pads in the lower side of the fuselage at the wing aft area of the Saab SF340A and SF340B series aeroplanes must be addressed (Section 1). The requirement is to take action in accordance with the SAAB Aircraft AB Mandatory Service Bulletin 340-53-061 (Section 2). The directive applies to SF340A models with serial numbers ranging from SF340A-004 to SF340A-159, and SF340B models with serial numbers from 340B-160 to 340B-459 (Section 3). Compliance with these directives must be completed by 31 December 1999, unless it has already been accomplished (Section 4). The directive became effective on 15 July 1999 (Section 5). The obligations imposed by this Airworthiness Directive on the parties or entities it governs include ensuring that the specified Saab SF340A and SF340B series aeroplanes are inspected and, if necessary, repaired to address the potential issue with the fuselage insulation pads. This involves following the procedures outlined in the SAAB Aircraft AB Mandatory Service Bulletin 340-53-061. The directive mandates that the compliance must be achieved by the specified deadline, 31 December 1999, for the affected aircraft models. Failure to comply with these obligations may result in the aircraft being deemed non-airworthy, which could prevent it from operating until the required actions are taken. In terms of consequences for non-compliance with the provisions of the Airworthiness Directive AD/SF340/70, there are potential civil and criminal penalties. Civil Aviation Regulations 1998 include provisions for enforcing compliance through fines and other civil penalties. For instance, non-compliance may result in the imposition of a civil penalty. Additionally, serious non-compliance could lead to criminal charges, where the responsible entity or individual could face prosecution. The specific penalties, including the maximum fines and potential imprisonment terms, would be determined by the relevant authorities and the severity of the non-compliance. It is essential for operators and maintainers of the affected Saab SF340 aeroplanes to adhere strictly to the requirements to avoid these legal repercussions.