Schweizer SGU 1 2: Ernest Schweizer, Rolls Royce Model 250, X 26 Frigate

Schweizer SGU 2 22: Ernest Schweizer, Rolls Royce Model 250, X 26 Frigate

Schweizer SGS 2 33: 445th Flight Test Squadron, Ernest Schweizer, Rolls Royce Model 250

Schweizer SGU 1 6: Aircraft Corporation, SGM 2 37, 445th Flight Test Squadron, Ernest

Schweizer SGS 2 25: Aircraft Corporation, SGM 37, 445th Flight Test Squadron, Ernest