AD/DHC-2/27 Amdt 3 - Horizontal Stabiliser Front Spar (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/DHC-2/27 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.

DHC-2 (Beaver) Series Aeroplanes AD/DHC-2/27 Amdt 3 Horizontal Stabiliser Front Spar 7/2007

Applicability: All Viking Air Ltd. (formerly Bombardier Inc.) DHC-2 Mk. I, Mk. II and Mk. III aircraft. Requirement: 1. Perform the following, in accordance with Viking Air Service Bulletin (SB) 2/47 Revision E, dated 23 January 2007, or later Transport Canada approved revision:

a. For all aircraft, remove the tailplane front spar pick-up brackets and carry out a fluorescent penetrant inspection of the tailplane front spar web for cracks in the area of the pick-up brackets in accordance with Appendix A of Viking Air SB 2/47 Revision E, or later Transport Canada approved revision.

(i) If cracks are found on aircraft pre-mod 2/758 (aircraft having no gusset plate installed on the rear face of the tailplane front spar), replace the tailplane front spar before further flight.

(ii) If cracks are found on the spar web of aircraft with Modification 2/758, replace the spar within 400 flight hours time in service after the crack finding.