AD/REC/4 - Fairchild Model F800 Digital Flight Data Recorders Central Processor Unit

Overview

The Civil Aviation Regulations 1998, as amended by F2006B06575, were enacted to address the critical issue of ensuring the safety and reliability of cockpit voice and flight data recording systems. This legislative instrument was introduced by the Commonwealth of Australia and is administered by the Civil Aviation Safety Authority (CASA), an agency under the Department of Infrastructure, Transport, Regional Development and Communications. The specific aim of AD/REC/4 is to mandate the modification of certain Fairchild Model F800 Digital Flight Data Recorders (DFDR) to prevent erroneous track changes and ensure that critical information is preserved for accident or incident investigations. CASA classifies this directive as mandatory, underscoring the importance of adhering to the specified requirements to maintain the integrity of flight data recording systems.

Scope and Application

The Civil Aviation Regulations 1998, under Part 39 - 107, specifically address the safety of cockpit voice and flight data recording systems, with a particular focus on Fairchild Model F800 Digital Flight Data Recorders (DFDR). This legislation applies to all DFDRs of the Fairchild Model F800, irrespective of their part numbers, with certain exclusions based on serial numbers. The exclusions pertain to specific serial numbers of DFDRs, detailed in the Act, which are not subject to the requirements outlined. This regulation extends its jurisdiction across the Commonwealth of Australia, ensuring a national standard for civil aviation safety. The Act does not specify exclusions beyond the outlined serial numbers, and compliance is mandatory as per the Bureau of Air Safety Investigation's classification. The requirement necessitates adherence to Loral Data Systems, Fairchild Aviation Recorders Bulletin DFR 027 (F800-31-027 Rev 2), with compliance expected either before 31 August 1995 or at the next scheduled maintenance visit, whichever comes first. This directive is crucial for preventing erroneous track changes and premature failures in the DFDRs, thereby safeguarding critical information that could be pivotal in accident or incident investigations.

Key Provisions

The Civil Aviation Regulations 1998, under Part 39, Section 107, include specific requirements for the maintenance and modification of Fairchild Model F800 Digital Flight Data Recorders (DFDR). The key provision, AD/REC/4, mandates that all applicable Fairchild Model F800 DFDRs must undergo specific modifications to the Central Processor Unit (section 1). The modification must be carried out in accordance with Loral Data Systems, Fairchild Aviation Recorders Bulletin DFR 027 (F800-31-027 Rev 2), as it has been classified as mandatory by the Bureau of Air Safety Investigation, Department of Transport and Communications. The directive specifies that this modification must be completed prior to 31 August 1995 or at the next maintenance visit, whichever is sooner. The obligations imposed by this regulation are clear. Owners or operators of Fairchild Model F800 aircraft equipped with the specified DFDRs must ensure that the Central Processor Unit is modified as per the Loral Data Systems bulletin. This involves rectifying identified faults to prevent erroneous track changes and potential premature failures of the component, which could otherwise lead to undetected faults that might compromise critical flight data. Ensuring compliance with this directive is crucial for maintaining the integrity of flight data, which is vital for accident and incident investigations. Failure to comply with this Airworthiness Directive could lead to serious consequences. The regulations stipulate that non-compliance with mandatory directives is taken very seriously, as it directly affects the safety and reliability of flight data recording systems. While specific penalties are not detailed in the text, non-compliance with such directives can typically result in enforcement actions, fines, or other civil and criminal penalties as prescribed under broader aviation safety laws. The severity of these penalties underscores the importance of adhering to the specified requirements to ensure the safety and reliability of flight data recording systems.