AD/B747/201 Amdt 3 - Centre Fuel Tank Wiring and Components (Cth)

AIRWORTHINESS DIRECTIVE On the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/B747/201 Amdt 2 and issues the following AD under subregulation 39.1 (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/B747/201 Amdt 3

Centre Fuel Tank Wiring and Components 13/2004

Applicability: Model 747 aeroplanes having line numbers 1 through 1124 inclusive.

Requirement: 1. For aeroplanes listed in Boeing Service Bulletin (SB) 747-28-2205 Revision 1 dated 16 April 1998 accomplish the following in accordance with either SB 747- 28-2205 Revision 1 dated 16 April 1998 or Revision 2 dated 17 May 1999:

1. perform a one-time visual inspection of the centre fuel tank wiring and components to detect discrepancies (damage, disbonding or incorrect installation), and

b. perform a one-time electrical bonding test of the centre fuel tank components.

Note 1: For the purposes of this Directive, a visual inspection is considered to be a general visual inspection defined as follows:

A visual examination of an interior or exterior area, installation or assembly to detect obvious damage, failure or irregularity. This level of inspection is made under normally available lighting conditions such as daylight, hangar lighting, flashlight, or drop-light and may require removal or opening of access panels or doors. Stands, ladders, or platforms, may be required to gain proximity to the area being checked.