AD/JT9D/39 - One-Piece Fan Case Shield (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 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.

Pratt and Whitney Turbine Engines - JT9D Series

AD/JT9D/39 One-Piece Fan Case Shield 4/2004

Applicability: Pratt & Whitney (PW) JT9D-7R4D, -7R4D1, -7R4E, -7R4E1, -7R4E4, - 7R4G2, and -7R4H1 turbofan engines with steel fan cases.

Note 1: These engines are installed on, but not limited to, Airbus Industrie A300 and A310, and Boeing 747 and 767 aeroplanes.

Requirement: 1. For PW JT9D-7R4D, -7R4D1, -7R4E, -7R4E1, -7R4E4, and -7R4H1 turbofan engines with steel fan cases that have PW Service Bulletin (SB) 72-312 incorporated, replace fan case shield Part Number (P/N) 802095 with the four- piece fan case shield and install four fan case shield supports. Information on replacing fan case shields and installing fan case shield supports can be found in PW SB JT9D-7R4- 72-583.

2. For PW JT9D-7R4G2 turbofan engines with steel fan cases that have PW SB 72- 88 and PW SB 72-311 incorporated, replace fan case shield P/N 802094 with the four-piece fan case shield and install four fan case shield supports. Information on replacing fan case shields and installing fan case shield supports can be found in Part A of PW SB JT9D-7R4-72-584.