To evaluate the oblique wing concept developed by Robert T. Jones and his associates at the NASA Ames Research Center, a flight test program has been initiated to assess the flying characteristics of a low speed manned oblique wing airplane. The principal objective of the program is to assess the aircraft's flying qualities at wing sweep angles from 0° to 60° and at indicated airspeeds up to 150 knots. At present the program is in the flight envelope expansion phase and is investigating flutter clearance as a function of wing sweep.