AD/PR/33 Amdt 3 - Hub Assembly (Cth)

AIRWORTHINESS DIRECTIVE On the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/PR/33 Amdt 2 and issues the following 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.

Propellers - Variable Pitch - Dowty Rotol AD/PR/33 Amdt 3 Hub Assembly 3/2009

Applicability: Dowty Aerospace Propellers Models R389/4-123-F/25, R389/4-123-F/26 and R390/4-123-F/27 propellers, all serial numbers, fitted with Part Number (P/N) 660714241 or P/N 660714255 hub assemblies, including P/N 660714241 hub assemblies that have been reworked in accordance with Dowty drawing 660714259.

Note 1: These propellers are known to be installed on Saab SF340A and 340B aircraft. Requirement: 1. Inspect the propeller hubs in accordance with the instructions of Dowty Propellers ASB SF340-61-95.

Inspections and corrective actions accomplished prior to the effective date of this AD, in accordance with Dowty ASB SF340-61-95 at original issue or Revision 1 or Revision 2 or Revision 3 or Revision 4, are acceptable to comply with the initial requirements of paragraph (1) of this AD. After the effective date of this AD, repetitive inspections and corrective actions must be accomplished in accordance with Dowty ASB SF340-61-95 at Revision 5.