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O-1 Bird Dog
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O-1 Bird Dog

O-1 Bird Dog
RoleForward air control and reconnaissance
Crew2 - pilot and observer
Length25.83 ft7.87 m
Wingspan36 ft10.97 m
Height9.17 ft2.79 m
Wing area173.94 ft²16.16 m²
Empty1,614 lb732 kg
Loaded2,400 lb1,008 kg
EnginesOne Continental O-470
Power213 hp159 kW
Maximum speed150 mph241.4 km/h
Combat range530 mi853 km
Service ceiling20,300 ft6,200 m
Rate of climb1,040 ft/min317 m/min

The O-1 Bird Dog is a military version of the Cessna 170 used by the United States Air Force, Army and Marines. It was developed as the winner of a 1950 competition for a new two-seat, single-engine observation plane.

The Air Force ordered 3,200 O-1s that were built between 1950 and 1959. The planes were used in various utility roles such as artillery spotting, front-line communications, medevac and training. During the Vietnam War, the planes were used for reconnaissance and forward air control. It was believed to be the smallest Air Force plane to see active duty.

The aircraft were eventually replaced by the O-2 Skymaster.

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