Federal Register of Legislation
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.
Pratt and Whitney Turbine Engines - PW4000 Series AD/PW4000/14 Low Pressure Turbine Disks 11/2009
Applicability: Pratt & Whitney PW4164, PW4168, and PW4168A turbofan engines with certain low pressure turbine (LPT) stage 4 disks, part number (P/N) 51N404, that have a serial number (S/N) listed in Table 1 of this AD, installed.
Note 1: These engines are installed on, but not limited to, Airbus A330-200 and A330-300 series aeroplanes.
Table 1. - Affected LPT Stage 4 Disks by Serial Number
LPT Stage 4 Disk Serial Nos. CLDLC01142 CLDLC01151 CLDLC01143 CLDLC01152 CLDLC01144 CLDLC01181 CLDLC01145 CLDLC01182 CLDLC01146 CLDLC01183 CLDLC01148 CLDLC01185 CLDLC01149 CLDLC01186 CLDLC01150 CLDLC01187
Requirement: 1. Remove from service any LPT stage 4 disk that has an S/N listed in Table 1 of this AD.
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