I don't think a canon answer is likely, so I think some limited speculation is in order. If you look at aviation from sixty years ago, i.e., 1955, you're still dealing with the same basic strategies for dealing with the forces of thrust, drag, lift and weight:, throttle, ailerons, elevators, flaps and rudder. You can boil the last four down to a single concept of control surfaces, furthermore.
You'd have to ask a pilot from 1955 to be sure, but I suspect that the real differences that have come about are how you navigate and interact with traffic control, specifically, that they've become VASTLY simpler.
If you look at cars, the difference is even more striking - I think you could easily pull someone driving a Model A in the Twenties and get them up and running in a modern, automatic car (infirmity of age aside).
Lastly, as alexwlchan noted, they've got big fish to fry in this time...I imagine that not a heck of a lot happened until the equation data came back, so it's really probably like ten to fifteen years of intensive transformation.