AD/JT15D/9 - Borescope Inspection of Impeller Rear Face (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 Canada Turbine Engines - JT15D Series

AD/JT15D/9 Borescope Inspection of Impeller Rear Face 10/2003

Applicability: Pratt and Whitney Canada (PWC) JT15D-1, JT15D-1A, and JT15D-1B engines which incorporate impeller Part Number (P/N) 3020365; and

1. Which were not previously inspected per Overhaul Manual Revision 14; or later revisions; or 2. Which have Serial Numbers (S/N) not listed in Table 1 of PWC Service Bulletin (S/B) 7590. Requirement: 1. Perform an inspection of the impeller in accordance with PWC S/B 7590 dated 23 May 2003. 2. Repair or replace impellers that do not meet the inspection requirements of PWC S/B7590 dated 23 May 2003, or later revisions.

Note: Canadian AD CF-2003-17 refers.

Compliance: For Requirement 1:

At the next engine shop visit; or