The DHC-4 Caribou uses Twin C pack and a 3000 4s. It features retracts with landing gear doors, slotted flaperons, double-slotted main flaps, and actuating upper and lower cargo bay doors. It uses 13 sheets of DTFB, 1 sheet of cardstock or posterboard, and 2 sheets of 1'x2'x1/8" plywood, among...