100% in-house. That said, all 'classroom' instruction is done by non-seniority list Spirit employees who have no airline flying or actual Airbus flight experience. A professional ground instructor does our re-current. We hire Embry Riddle grads to teach new-hire in-doc and systems (they teach for 2 years, then get to interview for a Spirit pilot position). All flight training device and sims are taught by line pilots pilots on the seniority list, and all orals and check-rides are done by seniority list pilots who fly the line.