AD/B767/77 Amdt 2 - Override/Jettison Fuel Pump

Overview

The Civil Aviation Regulations 1998, as amended by the legislative instrument F2006B03431, address the safety concerns related to the Boeing 767 series aeroplanes. Enacted by the Australian Parliament, this regulation was introduced to ensure that critical safety issues identified in specific aircraft components are promptly addressed. The regulation mandates compliance with Boeing Alert Service Bulletin 767-28A0045 Revision 2, focusing on the override/jettison fuel pump, to prevent potential damage to the impeller and pumping unit housing caused by a loose diffuser ring. This potential damage could lead to the pump locking up and, during dry fuel pump operation, result in metal-to-metal contact that may create an ignition source. The primary policy objective is to enhance aviation safety by requiring timely action and regular inspections to mitigate these risks. This regulation applies to Model 767 series aircraft from line positions 001 to 545 inclusive. The requirement is for compliance within 30 days from 8 December 1994, with subsequent inspections conducted at intervals not exceeding 1000 hours of time in service. The directive is designed to ensure ongoing compliance with the safety standards set forth by Boeing and other relevant authorities, thereby protecting both the aircraft and its passengers.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, under the Civil Aviation Safety Authority's schedule of airworthiness directives, apply to the Boeing 767 series aeroplanes, specifically those in the line position from 001 to 545 inclusive. The legislation mandates that these aircraft must comply with Boeing Alert Service Bulletin 767-28A0045 Revision 2, which pertains to the override/jettison fuel pump. This directive is necessitated by the potential for a loose diffuser ring to cause damage to the impeller and pumping unit housing, leading to pump lock-up. Additionally, the regulation references Sundstrand SB 5006286-28-A5 Revision 2 and FAA AD 94-11-05 Amdt 39-8921. The compliance requirement stipulates that unless the specified action has already been undertaken, it must be completed within 30 days from 8 December 1994. Subsequent inspections are mandated at intervals not exceeding 1000 hours of time in service, continuing until the Boeing SB 767-28-0046 requirements are incorporated. This directive aims to mitigate the risk of metal-to-metal contact during dry fuel pump operation, which could create a potential ignition source.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, contains the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives (AD) for Boeing 767 series aeroplanes. This legislative instrument outlines the requirements for the override/jettison fuel pump, as detailed in AD/B767/77 Amendment 2 (section 13/94). This directive applies to all Model 767 series aircraft with line positions ranging from 001 to 545 inclusive. The primary requirement is that operators must implement the action specified in Boeing Alert Service Bulletin 767-28A0045 Revision 2 (section 1). These obligations necessitate that the action outlined in Boeing's service bulletin must be carried out unless it has already been performed. The compliance timeline stipulates that this action must be completed within 30 days from 8 December 1994 (section 2). Following this initial action, inspections must be repeated at intervals not exceeding 1000 hours of time in service until the requirements of Boeing SB 767-28-0046 are incorporated (section 3). This ongoing requirement ensures that the aircraft remain airworthy and that the potential for a loose diffuser ring causing damage to the impeller and pump housing, which can lead to a pump lock-up or a potential ignition source during dry fuel pump operation, is mitigated. Failure to comply with these airworthiness directives can result in significant legal consequences. The Civil Aviation Regulations impose penalties for non-compliance, which may include fines and other sanctions. The specific penalties are not detailed in the provided text, but non-compliance with CASA directives can lead to enforcement actions, including grounding of the aircraft until compliance is achieved. Furthermore, operators may face civil or criminal liability for any accidents or incidents that arise from failure to adhere to these airworthiness directives. The potential severity of these consequences underscores the importance of strict adherence to the requirements set forth in the AD/B767/77 Amendment 2.