Sikorsky Schweizer 333

The turbine trainer built for modern rotorcraft instruction.

Overview

Sikorsky Helicopter United States ICAO: S333 1992–Present $690,000

The Sikorsky Schweizer 333 is a light turbine helicopter developed primarily for training and light utility missions. It evolved from the piston-powered 300 series with the addition of a turboshaft engine. The aircraft provides improved reliability and performance for training environments.

Live Fleet Activity (S333)

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Specifications

Units
Engine
1 × Rolls-Royce 250-C20W
Engine type
Turboshaft
Power
280 shp · 209 kW
Avionics
—
Wing tips
No winglets
Seats
4
Crew
—
Cabin width
6 ft 0 in  ·  1.84 m
Cabin height
4 ft 2 in  ·  1.28 m
Cabin length
4 ft 7 in  ·  1.40 m
Exterior length
31 ft 2 in  ·  9.50 m
Tail height
11 ft 0 in  ·  3.35 m
Fuselage diameter
6 ft 3 in  ·  1.90 m
Wing span
27 ft 6 in  ·  8.38 m
Baggage volume
—
Gross weight
—
Empty weight
—
Max takeoff weight
2,550 lb  ·  1,150 kg
Max landing weight
—
Max payload
1,250 lb  ·  550 kg
Fuel capacity
70 gal · 300 L · 200 kg (Jet A)
Max cruise speed
105 kt  ·  121 mph  ·  194 km/h
Maximum speed
—
Cruise speed
—
Approach speed
—
Range
319 nm  ·  370 mi  ·  590 km
Fuel burn
4.15 nm/gal  ·  2.03 km/L
Ceiling
13,000 ft  ·  4,000 m
Rate of climb
1,380 ft/min  ·  7 m/s
Takeoff distance
—
Landing distance
—
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A Schweizer 333

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Operational Context

Sikorsky Schweizer 333 — light turbine training helicopter

The Schweizer 333 was introduced in the 1980s as a turbine-powered development of the established 300 airframe. Retaining the basic three-blade rotor configuration, it incorporated a Rolls-Royce 250 series turboshaft engine to enhance power response and reduce vibration. The aircraft entered service with civilian flight schools and government agencies.

The helicopter cruises at approximately 95 knots (175 km/h) and has a maximum takeoff weight of about 2,050 pounds (930 kg). The turbine installation provides smoother operation compared with piston variants and improves performance in warmer climates. Cabin layout supports dual instruction with good visibility for both occupants.

The 333 gained popularity among operators seeking a turbine training platform without the higher acquisition cost of larger helicopters. Its handling characteristics remain similar to earlier Schweizer models, easing transition for students. The aircraft remains a recognizable light turbine trainer in the global market.

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