AD/DART/31 - Intermediate Pressure Turbine Disc (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.

Rolls Royce Turbine Engines - Dart Series AD/DART/31 Intermediate Pressure Turbine Disc 8/2005

Applicability: Rolls-Royce Dart Turboprop Engine models:

528-7E, 528D-7E,

529-7E, 529-7H, 529-8E, 529-8H, 529-8X, 529-8Y, 529-8Z, 529D-7E, 529D-7H, 529D-8E, 529D-8H, 529D-8X, 529D-8Y, 529D-8Z,

532-7, 532-7L, 532-7N, 532-7P, 532-7R,

533-2,

534-2,

535-2, 535-7, 535-7R,

536-2, 536-2T, 536-7, 536-7P, 536-7R,

542-10, 542-10J, 542-10K, 542-4, 542-4K,

543-10, 543-10K,

550-2,

552-2, 552-7, and 552-7R;

that have the Initial Issue or Revision 1, but not Revision 2 or later Revisions of Rolls Royce Service Bulletin (SB) Da72-533 incorporated and which have not been subject to a dimensional inspection of the Intermediate Pressure Turbine (IPT) disc in accordance with the Engine Overhaul Manual, Chapter 72-61-1. Requirement: 1. Carry out dimensional inspection of the IPT disc in accordance with SB Da72- 538 dated 10 June 2005 or later approved revisions;