Since Northern Air Cargo abandoned their regular service with the Douglas DC-6, Everts Air Cargo is the last airline in the USA to operate scheduled flights with a rather large fleet of 60-year-old piston-powered aircraft. In a 2007 video interview, the Anchorage Station Manager stated that the DC-6 was still considered to be a valuable aircraft for operations in the harsh conditions of Alaska, with excellent landing and takeoff performance on gravel runways. The downside is the difficulty to find Avgas and the maintenance labor cost. Everts Air Cargo estimates a ratio of 12 hours of maintenance for every single flying hour. Spare parts could also be a problem but Everts Air Cargo anticipates they will have enough in stock to keep the last DC-6 flying until 2015.