Plane not available

In R3 I recently purchased 2 767-200ERs for Aero Star airlines. One of the planes, SN#28346, is not showing up to be assigned to a route. It shows up in the Airplane list with 140 hours available. I tried to set it set up a route from JFK - GIG Range 4799, but the 762-200ER is not available to be assigned.

Thanks for your attention to this issue.