On arrival in the destination circuit area the pilot was unable to obtain a safe "down and locked" indication for the landing gear. A diversion to a more suitable aerodrome was carried out and after all efforts to lock the left main gear down were unsuccessful, a safe landing was made with all wheels retracted. Damage was confined to the propeller blades and the under skin of the fuselage. The right main gear would not lock down because the lock mechanism was corroded and dirty. The corrosion and foreign matter prevented the down lock hook from positioning correctly.
