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At a glance
Measured figures
Defender 4000 · Length
Single source12.20 m (40 ft 0 in)[source]
SR20-G3 · Length
Single sourceConfiguration
| Specification | Britten-Norman Defender | Cirrus SR20 |
|---|---|---|
| Type | Transport, patrol, reconnaissance[source] | Light aircraft[source] |
| National origin | United Kingdom[source] | United States[source] |
| Manufacturer | Britten-Norman[source] | Cirrus Aircraft[source] |
| Status | In service[source] | — |
26 ft 0 in (7.92 m)[source]
Empty; Defender 4000 · empty equipped
Single sourceMaximum take-off; Defender 4000 · Max takeoff weight
Single source2,223 kg (4,900 lb) (empty equipped)[source]
3,856 kg (8,500 lb)[source]
Empty; SR20-G3 · Empty weight
Single sourceGross; SR20-G3 · Gross weight
Single sourceCruise; Defender 4000 · (72% power, at 1525 m (5000 ft))
Single sourceMaximum; Defender 4000 · (Max cruise, at 3050 m (10000 ft))
Single source326 km/h (203 mph, 176 kn) (Max cruise, at 3050 m (10000 ft))[source]
280 km/h (170 mph, 150 kn) (72% power, at 1525 m (5000 ft))[source]
Cruise; SR20-G3 · TAS
Single source155 kn (178 mph, 287 km/h) TAS[source]
Defender 4000 · VFR reserves
Single source1,863 km (1,158 mi, 1,006 nmi) (VFR reserves)[source]
Defender 4000 · 2 × Rolls-Royce 250 B17F turboprops (400 shp) each
Single source2 × Rolls-Royce 250 B17F turboprops , 300 kW (400 shp) each[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]
Defender 4000 · Wing area
Single source32.6 m 2 (351 sq ft)[source]
Defender 4000 · Endurance
Single source8 hr 30 minutes[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
| First flight | May 1970[source] | 21 March 1995[source] |
|---|
| Developed from | Britten-Norman Islander[source] | — |
|---|
| Capacity | Up to 16 troops in transport role[source] | 3 passengers (4 using 60/40 flex seating in post-2012 models)[source] |
|---|
| Aspect ratio | 8.0:1[source] | — |
|---|
| Airfoil | NACA 23012[source] | — |
|---|
| Fuel capacity | 1,131 L (299 US gal; 249 imp gal)[source] | — |
|---|
| Stall speed | 87 km/h (54 mph, 47 kn) (flaps down)[source] | 56 kn (64 mph, 104 km/h) CAS[source] |
|---|
| Take-off run to 15 m (50 ft) | 565 m (1,854 ft)[source] | — |
|---|
| Landing run from 15 m (50 ft) | 589 m (1,932 ft)[source] | — |
|---|
| Role | multi-role utility transport aircraft[source] | — |
|---|
| Number built | — | 2,084 (through 2025)[source] |
|---|
| Manufactured | — | 1999–present[source] |
|---|
| Developed into | — | Cirrus SR22[source] |
|---|
| Propellers | — | 3-bladed[source] |
|---|