AD/B767/174 - Thrust Reverser Modifications and Operational Checks (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 39.1 (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 767 Series Aeroplanes

AD/B767/174 Thrust Reverser Modifications and Operational Checks

8/2002

Applicability: Model B767 series aeroplanes powered by Rolls-Royce RB 211-524 series engines.

Requirement: 1. Install a second locking gearbox system on both left and right hand engine thrust reversers in accordance with Boeing Service Bulletin 767-78-0059, Revision 2, dated 10 June, 1993; or Revision 3, dated 20 January, 1994.

Note 1: FAA AD 94-17-03, amendment 39-8998, specifies the appropriate revision levels for Rolls-Royce and Eldec Service Bulletins referred to in the Boeing Service Bulletins contained in Requirement 1.

2. Carry out operational checks of number 2 and 3 gearbox locks and airmotor brake in accordance with Appendix 1 (including figure 1) of FAA AD 94-17-03. 3. Repeat Requirement 2 operational checks.

Terminating Action

Compliance with this Directive terminates the actions required by paragraph (a) of FAA AD 91-22-02, amendment 39-8062.

Note 2: FAA AD 94-17-03, amendment 39-8998.refers.