Ah yes, the pixies!
I don't know the answer to the coriolis question, but if a mass of air moving within the atmosphere above the planet is affected by the coriolis force and veers slightly, then why not an aircraft also moving in the atmosphere above the planet?
Indeed - I have just checked my dictionary, and its' definition of coriolis is; "A hypothetical force used to explain the deflection in the path of a body moving relative to the earth"
(If aircraft are affected by this, I would not have thought that rudder trim is the answer - the aircraft will account for it by comparing its required track with its actual track and adjust heading accordingly. Rudder trim is used to adjust for any slight variations in the airframe - one wing fractionally more draggy than the other - asymmetric fuselage drag etc.)