AD/PR/34 Amdt 1 - Hub Through Bolts (Cth)

AIRWORTHINESS DIRECTIVE

For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/PR/34 and issues the following 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.

Propellers - Variable Pitch - Dowty Rotol

AD/PR/34 Amdt 1

Hub Through Bolts 11/2003

Applicability: All Dowty Rotol propeller models R354/4-123-F/13, R354/4-123-F/20, R375/4-123- F/21, R389/4-123-F/25, R389/4-123-F/26, and R390/4-123-F/27 installed on SAAB 340A and 340B aircraft excluding those propellers assembled using PR1422-B2 sealant in accordance with Dowty Aerospace Service Bulletin (SB) SF340-61-97.

Requirement: 1. Unless previously accomplished in accordance with Dowty Aerospace Propellers SB SF340-61-96 Revision 1, dated 18 April 2000, inspect the propeller hub through bolts for loss of torque in accordance with Dowty Aerospace Propellers SB SF340-61-96 Revision 2, Accomplishment Instructions, Paragraph 3A(2) though 3A(9).

2. Unless previously accomplished in accordance with Dowty Aerospace Propellers SB SF340-61-96 Revision 1, advise the propeller manufacturer of the results of each inspection and record the results of each inspection in the respective propeller records in accordance with SB SF340-61-96 Revision 2, Accomplishment Instructions, Paragraphs 3B and 3C respectively.