https://aeropedro.despair.ch/aeropedro/DeHavilland.html
Downloads v1141 version 2Dv3.0 - 3Dv2.5
Base models (‘ready to fly’, including all needed parts and files)
DHC63L Twin Otter LP v1141 18.0mb >DHC-6-300 long nose on standard wheels.
DHC63S Twin Otter Floatplane v1141 18.1mb >DHC-6-300 short nose on amphibious floats.
DHC62 Twin Otter Tundra v1141 18.0mb >DHC-6-200 on tundra wheels.
DHC61 Twin Otter Tundra v1141 18.0mb >DHC-6-100 on tundra wheels.