De Havilland Canada Dhc-4 Caribou

Twin Piston

The de Havilland Canada DHC-4 Caribou stands as one of aviation's most capable short takeoff and landing (STOL) transports, designed in the late 1950s when Canada's bush flying heritage met military tactical airlift requirements. First flown in 1958, the Caribou was engineered to operate from unprepared strips as short as 1,200 feet, delivering up to 8,740 pounds of cargo or 32 troops into remote locations that would ground conventional aircraft. Its high-mounted wing, full-span double-slotted flaps, and rugged fixed landing gear gave it a landing roll under 600 feet at maximum weight—a performance envelope that made it legendary in both military and civilian bush operations. While the United States Army adopted the type as the CV-2 (later redesignated C-7 when transferred to the Air Force), and it saw extensive service in Vietnam's austere airstrips, a small number of Caribou found civilian roles in cargo operations, aerial survey work, and remote resupply missions across Alaska, Canada, and developing regions. Powered by twin Pratt & Whitney R-2000 radial engines producing 1,450 horsepower each, the Caribou cruises at around 152 knots but trades speed for its unmatched ability to haul heavy loads off grass, gravel, or dirt. Its rear loading ramp and 30-foot cargo bay made it a workhorse for oversized freight long before modern turboprop STOL designs arrived. Production ended in 1973 after 307 aircraft, and today the DHC-4 is rare in civilian service, with most survivors either retired to museums or still working in specialized freight roles where its extreme short-field capability remains unmatched by newer types. SkyMeter has tracked flights across airframes and operators over routes, with the largest observed operator.