Bristol Sycamore 4

1953

The Type 171 Mk.4 was built with 4 doors, featured a 520shp Alvis Leonides 71 engine, a higher main undercarriage and the pilot sat on the right hand side of the cockpit. Most Sycamore production units were based on the Mk.4.

Specifications

Engine	1 x Alvis Leonides Mk.71 550 shp
Capacity	2 + 3
Length (m)	18.62
Height (m)	4.23
Blades	3
Rotor diam. (m)	14.8
Disc area (m2)	172.1
Weight (kgs)	Empty: 1730 Max: 2450
Speed (km/h)	Max: 227
Range (km)	530
Ceiling (m)	4725

Airframes (93)

C/N	Model	Built	Reg
13474	sycamore 4	1957	XL829 XL829
13504	sycamore 4	1959	XN449	w/o 1962
13505	sycamore 4	1958	XN450 XN450

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Operators

1951-1965	Royal Australian Air Force Type 171 Sycamore
1953-1966	Fleet Air Arm (RAN) Type 171 Sycamore
1953-1972	Royal Air Force Type 171 Sycamore
1979-1985	Flambards Experience Type 171 Sycamore
2007-	Boscombe Down Aviation Collection Type 171 Sycamore
2015-	Aerospace Bristol