FORCETALLY
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Preparing your view.
At a glance
Measured figures
O-1E · Length
Single source25 ft 10 in (7.87 m)[source]
SR20-G3 · Length
Single sourceConfiguration
| Specification | Cessna O-1 Bird Dog | Cirrus SR20 |
|---|---|---|
| Type | Observation aircraft[source] | Light aircraft[source] |
| National origin | United States[source] | United States[source] |
| Manufacturer | Cessna[source] | Cirrus Aircraft[source] |
| Status | Active as warbirds and with civilian pilots[source] |
26 ft 0 in (7.92 m)[source]
O-1E · Range
Single source530 mi (850 km, 460 nmi)[source]
O-1E · 1 × Continental O-470-11 air-cooled flat-six
Single source1 × Continental O-470-11 air-cooled flat-six , 213 hp (159 kW)[source]
SR20-G3 · 1 × Continental IO-360-ES six cylinder, horizontally-opposed piston aircraft engine
Single source1 × Continental IO-360-ES six cylinder, horizontally-opposed piston aircraft engine , 200 hp (150 kW)[source]
O-1E · Wing area
Single source174 sq ft (16.2 m 2 )[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
| Primary users | United States Army United States Air Force United States Marine Corps Royal Thai Air Force[source] | — |
|---|
| Number built | 3,431[source] | 2,084 (through 2025)[source] |
|---|
| Manufactured | 1950–1959[source] | 1999–present[source] |
|---|
| Introduction date | 1950[source] | — |
|---|
| First flight | 14 December 1949[source] | 21 March 1995[source] |
|---|
| Retired | 1974 (U.S.)[source] | — |
|---|
| Developed from | Cessna 170[source] | — |
|---|
| Variant | Cessna 308[source] | — |
|---|
| Developed into | SIAI-Marchetti SM.1019[source] | Cirrus SR22[source] |
|---|
| Fuel capacity | 41 US gal (34 imp gal; 160 L)[source] | — |
|---|
| Absolute ceiling | 24,800 ft (7,600 m)[source] | — |
|---|
| Take-off distance to 50 ft (15 m) | 560 ft (170 m)[source] | — |
|---|
| Landing distance from 50 ft (15 m) | 600 ft (180 m)[source] | — |
|---|
| Capacity | — | 3 passengers (4 using 60/40 flex seating in post-2012 models)[source] |
|---|
| Propellers | — | 3-bladed[source] |
|---|
| Stall speed | — | 56 kn (64 mph, 104 km/h) CAS[source] |
|---|