AD/B747/150 Amdt 1 - Upper Link Fuse Pin

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Legislation au F2006B03052 In force Legislative Instrument

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

 


Boeing 747 Series Aeroplanes

 

AD/B747/150

Amdt 1


Upper Link Fuse Pin 10/97

 

Applicability: Model 747 and 747-400 series aircraft with line numbers 1 through 967, and 969 through 992; excluding aircraft equipped with Pratt and Whitney PW4000 or General Electric CF6-80C2 series engines; and excluding aircraft on which the strut/wing modification has been accomplished in accordance with FAA ADs 95-13-05, 95-13- 07, or 95-10-16, as applicable.

 

Requirement: Action in accordance with the technical requirements of FAA AD 97-14-06 Amdt 39- 10064.

 

Note: Boeing Service Bulletins 747-54-2155 and 747-54A2166 refer.

 

Compliance: As specified in the requirement document with a revised effective date of 11 September 1997.

 

Background: The FAA received reports of cracked or corroded fuse pins on the upper link of the inboard and outboard struts. This condition could result in fracturing of the pins and the possible separation of an engine from the aircraft.

 

Amendment 1 is issued in response to a new FAA AD which reduces the compliance times of actions associated with certain fuse pins and provides for optional terminating action for the requirements of this Directive. This amendment is prompted by a report received by the FAA of fracturing of a bulkhead style fuse pin located in the inboard strut at the forward end of the upper link.

 

The original issue of this airworthiness directive became effective on 22 June 1995.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of the Commonwealth of Australia, provide a comprehensive framework for ensuring the safety and efficiency of civil aviation in Australia. Part 39 of these regulations, which includes the Schedule of Airworthiness Directives, specifically addresses the safety requirements for various aircraft models. The directive AD/B747/150 Amendment 1 pertains to Boeing 747 series aeroplanes and was introduced to address issues related to the structural integrity of the upper link fuse pins, which could potentially lead to the separation of an engine from the aircraft. This directive applies to certain model 747 and 747-400 series aircraft, excluding those with specific engine types and modifications. The policy objective behind this directive is to ensure compliance with technical requirements set forth by the Federal Aviation Administration (FAA) to mitigate the risk of fracturing and separation incidents.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, governs the application of the Civil Aviation Safety Authority's (CASA) airworthiness directives, including AD/B747/150 Amendment 1, which pertains to Boeing 747 and 747-400 series aeroplanes. This regulation applies to aircraft within the specified line numbers, excluding those equipped with Pratt and Whitney PW4000 or General Electric CF6-80C2 series engines, as well as those that have undergone the strut/wing modification as per relevant FAA airworthiness directives. The directive is applicable across the Commonwealth of Australia and ensures compliance with the technical requirements outlined in FAA AD 97-14-06 Amendment 39-10064, with Boeing Service Bulletins 747-54-2155 and 747-54A2166 referenced for additional guidance. The requirement is that operators must undertake the specified actions in accordance with the stipulated technical requirements, with a revised effective date of 11 September 1997. This airworthiness directive was prompted by reports of cracked or corroded fuse pins on the upper link of the inboard and outboard struts, which could potentially result in engine separation from the aircraft.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, details the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives (AD) for various aircraft, including the Boeing 747 series. Within this context, AD/B747/150 Amendment 1 pertains to the upper link fuse pins on Boeing 747 and 747-400 series aircraft, excluding those with specific engine types and certain modifications (Section 1). The directive applies to aircraft with line numbers ranging from 1 to 967 and 969 to 992, barring those equipped with Pratt and Whitney PW4000 or General Electric CF6-80C2 series engines, as well as those that have undergone the strut/wing modification detailed in FAA ADs 95-13-05, 95-13-07, or 95-10-16 (Section 2). The main requirement of AD/B747/150 Amendment 1 is that the action taken must comply with the technical specifications outlined in FAA AD 97-14-06 Amendment 39-10064 (Section 3). This is further supported by Boeing Service Bulletins 747-54-2155 and 747-54A2166 (Section 4). Compliance must be achieved as specified in the requirement document, with a revised effective date of 11 September 1997 (Section 5). The directive responds to incidents of cracked or corroded fuse pins on the upper link of the inboard and outboard struts, which could potentially lead to engine separation from the aircraft (Section 6). Entities governed by this legislation must ensure that the specified modifications and inspections are performed to maintain the airworthiness of the aircraft. This includes adherence to the technical requirements of FAA AD 97-14-06 Amendment 39-10064 and following the guidelines provided in the relevant Boeing Service Bulletins. Failure to comply with these provisions can result in significant safety risks, including the potential for engine detachment during flight. The Civil Aviation Regulations 1998 impose severe consequences for non-compliance with airworthiness directives. Any breach of the requirements specified in AD/B747/150 Amendment 1 could lead to civil or criminal penalties. The specific penalties are not detailed in the provided text, but under general aviation law, non-compliance can result in substantial fines and potential imprisonment for individuals or corporate entities found guilty of violating safety regulations. The exact penalties would be determined based on the severity and circumstances of the breach.

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Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.