Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, form a comprehensive framework designed to regulate and ensure the safety of civil aviation within the country. One specific aspect of these regulations is the issuance of Airworthiness Directives (ADs) by the Civil Aviation Safety Authority (CASA) to address identified safety issues with aircraft and aeronautical products. The problem or gap this legislation was introduced to address includes ensuring that aircraft and their systems meet stringent safety standards to protect passengers and crew. This is achieved by requiring modifications or revisions to aircraft systems or documentation as necessary to mitigate identified risks. The policy objective of these regulations is to maintain and enhance the safety of civil aviation through proactive and responsive regulatory measures. The AD discussed here, AD/B747/254, was introduced to ensure that Boeing 747 series aeroplanes, specifically those modified by FAA Supplemental Type Certificate (STC) ST09097AC-D, have a functional passenger entertainment system (PES) that can be safely de-powered in case of an emergency, thereby preventing potential fire or smoke hazards.

Scope and Application

The Civil Aviation Regulations 1998, as amended, govern the airworthiness and safety standards for aircraft operating in Australia, with Part 39 outlining specific requirements for airworthiness directives. One such directive, AD/B747/254, pertains to Boeing 747SP series aeroplanes that have been modified by the United States Federal Aviation Administration (FAA) Supplemental Type Certificate (STC) ST09097AC-D. This Airworthiness Directive (AD) is issued by a delegate of the Civil Aviation Safety Authority (CASA) and mandates specific modifications to the passenger entertainment system (PES) to address safety concerns. The directive requires the installation of a power switch and a load-shed circuit breaker, along with associated relays and wiring, as outlined in Raytheon Service Bulletin 747(SP)VIP-24-1, dated 22 September 2000. Furthermore, the Aircraft Flight Manual (AFM) must be updated to include revised Normal Procedures and Emergency Procedures sections, in line with Raytheon Airplane Flight Manual Supplement 747SP-21, dated 16 October 2000. These modifications and revisions must be completed within 18 months of the directive's effective date, 6 September 2001. The AD applies specifically to the mentioned aircraft model and modifications, ensuring that the flight crew is capable of removing power from the PES in emergency situations, thereby mitigating potential risks associated with smoke or fire.

Key Provisions

The Civil Aviation Regulations 1998, specifically PART 39 - 105, includes a Schedule of Airworthiness Directives (ADs) issued by the Civil Aviation Safety Authority (CASA). One such directive, AD/B747/254, applies to Boeing 747SP series aeroplanes modified by the United States Federal Aviation Administration (FAA) Supplemental Type Certificate (STC) ST09097AC-D. This AD mandates the modification of the passenger entertainment system (PES) and the revision of the Aircraft Flight Manual (AFM) to ensure safety during potential emergencies involving smoke or fire. According to the requirement section (1), the aircraft must have a power switch and load-shed circuit breaker installed, along with associated relays and wiring, as detailed in Raytheon Service Bulletin 747(SP)VIP-24-1, dated 22 September 2000. Additionally, the Normal Procedures and Emergency Procedures sections of the AFM must be updated to instruct flight crews on how to use the power switch to disconnect the PES in case of an emergency, as per Raytheon Airplane Flight Manual Supplement 747SP-21, dated 16 October 2000. The AD imposes several obligations on the entities it governs. Firstly, operators of the Boeing 747SP series aeroplanes must ensure that the PES installed under STC ST09097AC-D is modified as specified. This includes the installation of a power switch, load-shed circuit breaker, and associated relays and wiring, in line with the instructions provided in the Raytheon Service Bulletin 747(SP)VIP-24-1. Secondly, the AFM must be updated to reflect these changes, with particular attention to the Normal Procedures and Emergency Procedures sections. These updates are necessary to inform the flight crew on the use of the power switch in emergency situations, as outlined in the Raytheon Airplane Flight Manual Supplement 747SP-21. Non-compliance with these requirements could lead to the aeroplane not being airworthy. For breaches of the AD, there are potential civil and criminal consequences. The AD specifies a compliance timeline: modifications to the PES must be completed within 18 months of the effective date of the AD, while updates to the AFM must be made immediately upon the AD’s effective date. Failure to adhere to these requirements could result in the aeroplane being deemed non-compliant with airworthiness standards, potentially leading to penalties under the Civil Aviation Act 1988. These penalties can include fines and, in severe cases, prosecution, depending on the nature and extent of the breach. The specific maximum penalties are not detailed in the AD but would be determined in accordance with the broader legal framework governing civil aviation safety.