AD/B747/230 Amdt 1 - Thrust Reverser Checks (Cth)

AIRWORTHINESS DIRECTIVE For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/B747/230 and issues the following AD under subregulation 39.1 (1) of CAR 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/B747/230 Amdt 1

Thrust Reverser Checks 9/2002

Applicability: Model 747-400 series aeroplanes equipped with Rolls-Royce RB211-524G/H series engines, and or RB211-524G-T/H-T series engines.

Requirement: 1. Unless previously accomplished, install an additional locking system on each engine thrust reverser in accordance with the accomplishment instructions of Boeing Service Bulletin 747-78-2158 Revision 2 dated July 29, 1999. Concurrent with accomplishment of Boeing SB 747-78-2158 Revision 2, incorporate requirements of Rolls- Royce Service Bulletin RB211-78-9601 Revision 5 dated February 20 1998, and Rolls-Royce Service Bulletin RB211-78- B207 dated November 19 1994.

2. Unless previously accomplished, incorporate each of the following:

(a) Modify fuel temperature indicating system in accordance with Boeing Service Bulletin 747-73-2052 Revision 1 dated April 23 1992; and Rolls- Royce Service Bulletin RB211-71-9043 dated May 4 1990.

(b) During accomplishment of Boeing SB 747-73-2052 Revision 1, modify the central maintenance computer system hardware and software in accordance with Boeing SB 747-45-2007 dated March 29 1990 and Boeing SB747-45- 2016 Revision1 dated May 2 1996.