The L-33's metal construction permits outdoor storage without suffering deterioration common to other gliders, such as fiberglass. The surface is anodized and coated with durable epoxy polyurethane paint. Best thermalling at 40 kts, slower in smooth lift. Stalls at 35 kts. Rough air 85 kts, acro at 92 to 97 kts, red line 130 kts.
All controls are harmoniously balanced and the ship is very nicely responsive.
The air brakes are very effective and smooth to operate, enabling precision landings. The cockpit is very comfortable for a wide range of pilots in terms of their sizes and weights. Rudder pedals are adjustible in flight, and the incline of back rest as well. The back rest has five lower adjustments, and is fitted with a head rest. The visibility is superb and the cockpit is very quiet.