AD/CF6/67 - Compressor Rear Frame Cracks (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 39.001(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.

General Electric Turbine Engines - CF6 Series AD/CF6/67 Compressor Rear Frame Cracks 12/2007

Applicability: General Electric Company (GE) CF6-80E1A1, CF6-80E1A2, CF6-80E1A3, CF6-80E1A4, and CF6-80E1A4/B model turbofan engines with compressor rear frame (CRF) part numbers (P/Ns) 1520M26G03/G06/G08/G11/G12 installed.

Note 1: These engines are installed on, but not limited to, Airbus Industrie A330 series aeroplanes. Requirement: Revise GE's Instructions for Continued Airworthiness ALS, and for air carrier operations, revise the approved continuous airworthiness maintenance program, by adding the information detailed below under the headings detailed below of this AD:

- Table 1. - Inspection Compliance Schedule

- Module - Level Inspection of CRFs

- Piece - Part Level Inspection of CRFs

- Determining CSN of the Compressor Rear Frame

Table 1.--Inspection Compliance Schedule

If CRF P/Ns 1520M26G03 / G06 / G08 / G11 / G12 are: Then Initially Inspect: And Repetitively Inspect: (1) Operated at a Before 12,200 cycles-since-new (CSN). Within every 6,300 cycles-since-last-inspection (CSLI), except that igniter pad holes on CRFs with P/Ns 1520M26G03 / G06 / G08, must be inspected within every 4,800 CSLI. CF6-80E1A3 or CF6-80E1A4/B engine rating. (2) Operated at a Before 13,700 CSN. Within every 6,300 CSLI, except that igniter pad holes on CRFs with P/Ns 1520M26G03 / G06 / G08, must be inspected within every 6,100 CSLI. CF6-80E1A4 engine rating. (3) Operated at a Before 14,200 CSN. Within every 6,300 CSLI. CF6-80E1A1 or CF6-80E1A2 engine rating.