Airworthiness Directive · Amendment 39-21199 · Fuselage
Viking Air Limited Airplanes
This AD applies to the following Viking Air Limited airplanes, certificated in any category:
(1) Model DHC-2 Mk. I airplanes altered by Supplemental Type Certificate (STC) SA92-63 or SA00299NY with a float strut wire pull fitting part number (P/N) VALTBS1245-1, P/N VALTBS1245-2, P/N VALTBS1244-1, P/N VALTBS1244-3, or P/N VALTBS1244-4; and
(2) Model DHC-2 Mk. III airplanes altered by STC SA91-18 or SA945NE with a float strut wire pull fitting P/N VALTBS1245-1, P/N VALTBS1245-2, P/N VALTBS1244-1, P/N VALTBS1244-3, or P/N VALTBS1244-4.
The FAA is adopting a new airworthiness directive (AD) for certain Viking Air Limited Models DHC-2 Mk. I and DHC-2 Mk. III airplanes. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as cracks reported on the forward and aft float strut wire pull fittings. The FAA is issuing this AD to address the unsafe condition on these products.
Unless already done, do the following actions.
(1) Within 90 days after August 17, 2020 (the effective date of this AD):
(i) Replace each forward wire pull fitting P/N VALTBS1245-1 and P/N VALTBS1245-2 with P/N VALTBS1245-3 Left Hand (LH) or P/N VALTBS1245-4 Right Hand (RH) by following the Accomplishment Instructions, paragraphs A.1. through A.8., of Viking DHC-2 Beaver Service Bulletin No. V2/003, Revision NC, dated November 28, 2012 (Viking SB No. V2/003); or Viking DHC-2T Beaver Service Bulletin No. V2/002, Revision A, dated September 12, 2011 (Viking SB No. V2/002, Revision A), as applicable to your model airplane.
(ii) Within 110 hours time-in-service (TIS) after the replacement of the forward wire pull fittings and thereafter at intervals not to exceed 110 hours TIS, visually inspect each forward wire pull fitting for corrosion and cracks. If there is any corrosion or a crack, before further flight, replace the fitting with fitting P/N VALTBS1245-3 (LH) or P/N VALTBS1245-4 (RH).
(2) Within 180 days after August 17, 2020 (the effective date of this AD):
(i) Replace each aft wire pull fitting P/N VALTBS1244-1 with P/N VALTBS1244-3 (LH) or P/N VALTBS1244-4 (RH) by following the Accomplishment Instructions, paragraphs B.1. through B.8., of Viking SB No. V2/003 or Viking SB No. V2/002, Revision A, as applicable to your model airplane.
(ii) Within 110 hours TIS after the replacement of the aft wire pull fittings and thereafter at intervals not to exceed 110 hours TIS, visually inspect each aft wire pull fitting for corrosion and cracks. If there is any corrosion or a crack, before further flight, replace the fitting with fitting P/N VALTBS1244-3 (LH) or P/N VALTBS1244-4 (RH).
