DHC-6 Twin Otter 1.4m BNF Basic with AS3X+ and SAFE SelectE flite DHC 6 Twin Otter 1. 4m RC Airplane Introduction The DHC 6 Twin Otter was developed by de Havilland Canada in 1965. Designed as a rugged STOL (Short Take Off and Landing) commuter aircraft, the Twin Otter carried passengers and cargo into harsh environments such as the sub zero Antarctic and scorching North African desert. For 60 years, the Twin Otter has stood alone as the most reliable and versatile aircraft in its class! The E flite Twin