New Schweizer 333 Includes 30% Payload Boost

Schweizer Aircraft at a press conference this morning will unveil its new 333 single turbine, an update of the 330 with more power, more useful load, more speed and better hover performance.

"With the Model 333, Schweizer has served a message that it is committed to be a leader of the light-turbine helicopter market," President Paul Schweizer said. "This is an aircraft dedicated to the needs of the operator."

The company lays claim to the lowest operating costs of any turbine powered helicopter-some 30% lower than the average of other singles. The company said it is targeting a variety of markets including airborne law enforcement, training, power and pipeline patrol, ENG, transportation and other utility missions. The first sale of the new model -- to a Texas law enforcement agency -- will be announced today.

The improved performance of the 333 stems from a new main rotor system with Schweizer-developed cambered airfoils, a large diameter splined hub and oil-filled drive shaft. The main rotor has a slightly larger diameter than the system on the 330 and is powered by the same Rolls-Royce 250-C20W, albeit at higher power than on the 330. Maximum takeoff power on the 333 is 250 shp, versus 235 shp for the 330. Maximum continuous power is up 10 shp to 230 shp.

The biggest performance increase is the 220-pound increase in payload capability. The 333 has an empty weight of 1,210 pounds, and a maximum gross weight of 2,550 pounds, resulting in a 1,340-pound useful load, compared to a 1,120-pound useful for the 330SP. Fuel capacity remains the same at 493 pounds (73 gallons) leaving 847 pounds for crew, passengers and mission equipment. The nominal configuration seats three, although a four-place interior is offered.

The new aircraft is also faster than the 330, with a 123 kt. VNE, compared to 108 kt. on the earlier model. Normal cruise speed is 105 kt., and maximum range and endurance are 319 nmi and 4.19 hours, respectively.