AD/B747/385 Fuel Pump Discharge Port (Cth)

AIRWORTHINESS DIRECTIVE

For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001(1) of CASR 1998.  The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Boeing 747 Series Aeroplanes

AD/B747/385 Fuel Pump Discharge Port 13/2008

Applicability:

Boeing Model 747-400, 747-400D, and 747-400F series aeroplanes as identified in Boeing Special Attention Service Bulletin 747-28-2260, dated 13 March 2008.

Requirement:

Install an extension tube to the existing pump discharge port of the scavenge pump on the outboard side of the centre fuel tank in the main fuel tank No. 2, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 747-28-2260, dated 13 March 2008.

Note:  FAA AD 2008-21-06 Amdt 39-15690 dated 2 October 2008 refers.

Compliance:

Within 60 months after the effective date of this AD, unless previously accomplished.

This Airworthiness Directive becomes effective on 18 December 2008.

Background:

This AD results from fuel system reviews conducted by the manufacturer.  The issuing of this AD is intended to prevent a fire or explosion in the fuel tank and consequent loss of the aeroplane.

James Coyne
Delegate of the Civil Aviation Safety Authority

6 November 2008