Gliders Our primary training glider. Schweizer 2-33A High performance two seat glider. Fully aerobatic. Grob 103A Our single seat transition glider. Schweizer SGS 1-26E Tinnyhawk – A 1953 classic single seater. Schweizer SGS 1-23D Silverbird – Another classic single seater built in 1960. Schweizer 1-23H-15