AD/PW100/12 - Propeller Shaft (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.

Pratt and Whitney Canada Turbine Engines - PW100 Series AD/PW100/12 Propeller Shaft 11/2005

Applicability: Pratt & Whitney Canada (P&WC) PW118, PW118A, PW118B, PW119C, PW120, PW120A, PW121, PW121A, PW123, PW123B, PW123C, PW123D, PW123E, PW124B, PW125B, PW127 and PW127E engines with propeller shafts listed in Tables 1 to 4.of Transport Canada AD CF-2005-29.

Note 1: The above engines are installed on, but not limited to, Aerospatiale ATR 42 and ATR 72, Bombardier DHC-8-100/200/300, Domier 328-120, Embraer EMB120, and Fokker 50 aircraft. Requirement: 1. Destroy/Discard propeller shafts identified in Table 1, 2, and 3 of Transport Canada AD CF-2005-29.

2. For propeller shafts identified in Table 4 of Transport Canada AD CF-2005-29; perform a visual inspection for oil leaks as per PART A of the Accomplishment Instructions of P&WC SB 21714R2, dated 20 May 2005, or later Transport Canada approved revisions.

(a) If an oil leak is found, do as follows:

(i) Do an inspection of the propeller shaft seal area for leaks per the Engine Maintenance Manual - Corresponding Fault Isolation Chart (Oil leak from propeller shaft area).