I fully deflected all controls, even trhottle and prop pitch, without success. That didn't seem to work for me. Then I tried SPACEBAR. Then, I hit CTRL-Z (time acceleration) for a while to get past any timeout; didn't work. Using the Rift, I also made sure to look at all controls while moving; no success.
Ultimately, I hit F2 to look at said moving controls. I don't know if it's coincidence, but it got me past this step.