The Rusty Duck was a Ford Tri-Motor plane owned by Ashton Byrne, a down-on-his-luck Canadian pilot and veteran of World War I. Bryne flew in and around Asia Minor, often using Istanbul, Turkey as a base of operations.
The cargo plane met its end after Bryne was paid $10,000 by the Wardens to fly them to the environs of Snake Castle in southeastern Turkey. As The Rusty Duck appeared over the castle, a flight of demons attacked it, smashing the cockpit and wrecking its controls. Bryne and the Wardens escaped via parachutes, leaving the Duck to crash into the Turkish countryside.