Some Fairchilds had hydraulic nose wheel steering, there was a little reservoir attached to the steering unit. That may have been the case with the 227, I never flew them. The handful of F-27's I did fly all had the Kidde pneumatic system. The three 227's Nordair operated went to Malmo Aviation.
We also used USAir in PIT. If that Howard Johnson's motel across from the old terminal could talk I'm sure it would have some interesting tales.
