COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Boeing 747 Series Aeroplanes
AD/B747/200 APU Fuel Boost Pumps 6/99 DM
Applicability: Model 747 series aeroplanes with line positions 001 through 1150 inclusive, equipped with an auxiliary power unit (APU) fuel boost pumps manufactured by Lear Romec and having Lear Romec part number (P/N) RR24640B.
Requirement: 1. Replace the APU fuel boost pump in accordance with Boeing Service Bulletin (SB) 747-28A2209 Revision 1 dated 18 February 1999 with either:
- a pump that has been reworked in accordance with SB 747-28A2209 Revision 1, or
b. an approved pump manufactured by a supplier other than Lear Romec.
2. Lear Romec fuel boost pumps, having P/N RR24640B, may not be installed in any aeroplane unless they have been reworked in accordance with SB 747-28A2209 Revision 1.
Note: FAA AD 99-08-19 Amdt 39-11125 refers.
Compliance: 1. Prior to 27 July 1999.
2. As of the effective date of this Directive.
This Airworthiness Directive becomes effective on 28 April 1999.
Background: This directive is intended to prevent potential failures within the electrical motor assembly of the APU fuel boost pump which could result in fuel leakage from the electrical connector or electrical arcing across the connector pins. This condition could further result in a fuel fire.
Overview
The Civil Aviation Regulations 1998, administered by the Civil Aviation Safety Authority, were enacted to ensure the safety of civil aviation within Australia. A specific issue addressed by these regulations is the potential for failures within the auxiliary power unit (APU) fuel boost pumps of certain Boeing 747 series aeroplanes, which could lead to dangerous situations such as fuel leakage and electrical arcing. This was identified as a significant safety risk that required immediate attention to prevent the possibility of fuel fires. The policy objective of these regulations is to mandate the replacement or rework of affected APU fuel boost pumps to mitigate these risks, thereby maintaining the highest standards of aviation safety. The Civil Aviation Regulations 1998 provide the framework through which such safety directives are implemented and enforced, ensuring that aircraft operations remain safe and compliant with national and international aviation safety standards.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 105, governs the airworthiness of aircraft operating within Australia, and this legislation applies to the Boeing 747 series aeroplanes with line positions 001 through 1150 inclusive, provided they are equipped with an auxiliary power unit (APU) fuel boost pump manufactured by Lear Romec and bearing the part number RR24640B. This directive mandates the replacement or rework of specific APU fuel boost pumps to mitigate the risk of potential failures within the electrical motor assembly, which could otherwise lead to fuel leakage or electrical arcing, potentially resulting in a fuel fire. The directive requires compliance by a specified date and references relevant service bulletins and amendments from the Federal Aviation Administration (FAA) for further guidance. This regulation is applicable nationally and is enforced by the Civil Aviation Safety Authority (CASA) to ensure compliance with safety standards set forth by the Commonwealth of Australia.
Key Provisions
The Civil Aviation Regulations 1998 (Part 39 - 105) establish a critical airworthiness directive (AD/B747/200) specifically for Boeing 747 series aeroplanes. This directive (Section 1) pertains to models 747 with line positions 001 through 1150 inclusive, equipped with auxiliary power unit (APU) fuel boost pumps manufactured by Lear Romec and identified by part number RR24640B. The directive mandates the replacement of the APU fuel boost pump, requiring compliance with Boeing Service Bulletin (SB) 747-28A2209 Revision 1 dated 18 February 1999. The replacement must be either a pump reworked in accordance with the specified bulletin or an approved pump from a supplier other than Lear Romec (Section 1(1)). Additionally, Lear Romec fuel boost pumps with part number RR24640B can only be installed if they have been reworked in accordance with the same service bulletin (Section 1(2)).
The obligations under this directive include ensuring that all applicable Boeing 747 series aeroplanes comply with the specified requirements. Operators of these aeroplanes must ensure that the APU fuel boost pump is replaced by 27 July 1999, and that the directive is adhered to as of its effective date, which is 28 April 1999 (Section 2). Failure to comply with the directive could result in serious safety hazards, including potential fuel leakage, electrical arcing, and the risk of a fuel fire.
Failure to comply with the requirements outlined in this airworthiness directive can lead to severe consequences. While the specific civil or criminal penalties are not detailed within the text of the directive, non-compliance with Civil Aviation Regulations can result in enforcement actions by the Civil Aviation Safety Authority (CASA). These actions may include fines, suspension or revocation of air operator certificates, and other regulatory penalties. The seriousness of the potential safety hazards underscores the importance of strict adherence to the directive to prevent accidents and ensure the continued airworthiness of the affected aircraft.