AD/SF340/26 Amdt 1 - Modification of Exit and Dome Light Assemblies

Overview

The Civil Aviation Regulations 1998, administered by the Civil Aviation Safety Authority (CASA), were enacted to ensure the safe operation of aircraft within Australia. Specifically, Part 39 - 105 of the Regulations outlines the requirements for Airworthiness Directives, which mandate actions to address identified safety issues in specific aircraft models. One such Airworthiness Directive, AD/SF340/26 Amendment 1, pertains to the Saab SF340 Series aeroplanes and addresses the issue of inadequate operating time for the emergency dome light due to power supply loads and inflight temperature gradients. This directive aims to enhance safety by ensuring that the emergency lighting system meets the required minimum operational time of ten minutes. The Airworthiness Directive was introduced to address a safety concern identified in the Saab SF340A and SF340B aeroplanes, where the existing power supply loads and temperature variations could result in the emergency dome light operating for less than the required ten minutes. The directive requires modifications to the exit and dome light assemblies in accordance with FAA AD 92-03-05 and Saab SB 340-33-030 Revision 2, which was issued to clarify text and correct part numbers. This amendment also allows certain aircraft to retain their existing emergency dome light bulb. Compliance with this directive is mandatory, with a revised compliance date of 31 August 1992, ensuring that the safety of the aircraft and its occupants is not compromised.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, pertains to the Civil Aviation Safety Authority Schedule of Airworthiness Directives, with a particular focus on Saab SF340 Series aeroplanes. This legislative instrument applies to the SAAB SF 340A/340B aeroplanes as delineated in the requirement document, mandating modifications to the exit and dome light assemblies in alignment with the FAA AD 92-03-05 and SAAB SB 340-33-030 Revision 2. This regulatory framework ensures that the safety standards are met, addressing issues such as the reduced operating time of emergency lighting systems due to power supply loads and inflight temperature variations. The compliance with these directives is mandatory, with a revised compliance date of 31 August 1992, indicating the urgency and importance of these modifications for maintaining the airworthiness of the specified aircraft. The scope of this Act is confined to the specified SAAB SF 340A/340B aeroplanes, and it operates under the broader jurisdiction of the Commonwealth of Australia, administered by the Civil Aviation Safety Authority.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105 under the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, includes an Airworthiness Directive (AD) pertaining to the Saab SF340 Series aeroplanes. This directive, AD/SF340/26 Amendment 1, mandates the modification of exit and dome light assemblies (Section 5/92). This directive applies to the SAAB SF 340A/340B aeroplanes as detailed in the Requirement Document. The directive requires action in accordance with the Federal Aviation Administration (FAA) AD 92-03-05 and Saab SB 340-33-030 Revision 2, which outlines specific modifications and procedures to ensure compliance. Compliance with AD/SF340/26 Amendment 1 necessitates that the modifications be carried out as specified in the FAA and Saab documents. The directive demands that the modifications be completed by 31 August 1992, as per the revised compliance date provided in the requirement document. This timeline is crucial to ensure that the aeroplanes meet the required safety standards. The modifications are intended to address the issue where the existing combination of power supply loads and inflight temperature gradients can cause the operating time of the power packs in the emergency lighting system to fall below the required ten minutes. The obligations imposed on the parties governed by this directive include adhering to the specifications and procedures outlined in the FAA AD 92-03-05 and Saab SB 340-33-030 Revision 2. Operators and maintenance personnel must ensure that the necessary modifications are completed accurately and on time. This includes conducting thorough inspections and tests to verify that the modifications have been implemented correctly and that the emergency lighting system meets the required performance standards. Additionally, operators must maintain records of the modifications and any related documentation to demonstrate compliance with the directive. Failure to comply with the requirements of AD/SF340/26 Amendment 1 may result in serious safety risks, as the compromised emergency lighting system could fail during an emergency, potentially endangering passengers and crew. The specific consequences for non-compliance may include administrative penalties, fines, or legal action under the Civil Aviation Act 1988. The maximum penalties for non-compliance with airworthiness directives can include substantial fines and potential imprisonment, depending on the severity of the breach and its impact on aviation safety. It is essential for all parties involved to take this directive seriously and ensure full compliance to avoid any adverse consequences.