Overview

The Civil Aviation Regulations 1998, amended through legislative instruments such as F2006B07019, establish a framework for ensuring the safety and airworthiness of aircraft operating within Australia. Enacted by the Australian Parliament, these regulations aim to address potential safety issues and maintain high standards in civil aviation. One such amendment, the Airworthiness Directive (AD) for the Saab SF340 Series Aeroplanes, was issued in 2003 to address a specific safety concern identified in the nacelle internal structure of certain aircraft models. The AD was issued by the Civil Aviation Safety Authority (CASA) as a response to field experience revealing cracks in the outer flange of the engine nacelle frame, which required immediate corrective action to prevent unsafe conditions. The directive mandates inspections in accordance with specified service bulletins to ensure compliance and maintain the airworthiness of affected aircraft.

Scope and Application

This Airworthiness Directive, issued by the Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998, applies specifically to Saab SF340 Series aeroplanes, encompassing Model SF340A aircraft with serial numbers ranging from 004 to 159, and Model 340B aircraft with serial numbers from 160 to 459. The directive mandates an inspection of the nacelle internal structure as outlined in Saab Aircraft Mandatory Service Bulletins No. 340-54-043 and its revision dated 16 January 2003, aimed at identifying and addressing cracks in the outer flange of the engine nacelle frame STA 203 and WL96. This inspection must be conducted using a non-destructive testing method due to the inaccessibility of the area. The directive was issued following field experiences highlighting the aforementioned safety concerns and became effective on 20 March 2003. It is to be complied with as per the specified requirements and dates, and its issuance was further publicised in the Commonwealth of Australia Gazette on 26 February 2003.

Key Provisions

The main operative sections of this Airworthiness Directive (AD/SF340/89) require an inspection of the nacelle internal structure of specific SAAB SF340 Series Aeroplanes. These aircraft, identified as model SF340A with serial numbers 004 through 159, and model SF340B with serial numbers 160 through 459, must undergo inspection in accordance with Saab Aircraft Mandatory Service Bulletin (SB) No. 340-54-043 dated 18 December 2002, or its revision dated 16 January 2003. This inspection is to address identified issues with cracks in the outer flange of engine nacelle frame STA 203 and WL96. These inspections must be conducted using a non-destructive testing (NDT) method due to the inaccessibility of the affected area (section 3). The obligations imposed by this AD are clear and specific. Operators of the affected SAAB SF340 Series Aeroplanes must ensure that the inspections are carried out as per the instructions outlined in the referenced service bulletins. This means that the operators need to follow the detailed procedures for NDT inspections to identify any cracks in the specified parts of the nacelle internal structure. Failure to comply with these requirements could result in the aircraft being deemed unairworthy, which would prevent it from operating until the required inspections are conducted and any necessary repairs are made (section 3). There are potential civil and criminal consequences for non-compliance with this Airworthiness Directive. While the regulations themselves do not specify maximum penalties, breaches of airworthiness requirements under the Civil Aviation Act 1988 can result in significant penalties. Civil penalties can include fines, while criminal penalties can include imprisonment, depending on the severity of the breach and its impact on aviation safety. The Civil Aviation Safety Authority (CASA) has the authority to enforce these regulations, which includes taking action against operators who fail to comply with ADs, such as issuing fines, suspension of air operator certificates, or other regulatory measures to ensure compliance and maintain aviation safety standards (section 3).