 The SNCASE SE.3200 Frelon was a heavy helicopter designed to equip the French Armed Forces, replacing the Sikorsky S-58 built under license by SNCASE (Société nationale des constructions aéronautiques du Sud-Est).The specifications called for an aircraft of less than 5 tonnes gross weight.The prototypes were powered by three Turbomeca Turmo IIIB 750/800 shp turbines to avoid all risk of engine failure