high skids as standard equipment, the 333 has a 30% greater useful load than the 330SP. RQ-8/MQ-8 Fire Scout The Northrop Grumman MQ-8B Fire Scout is an unmanned derivative of the Schweizer 330SP/333 helicopter, with a new fuselage, new fuel system, and UAV electronics and sensors. It also utilizes a new four-bladed rotor system based on that of the Schweizer 333. The Fire Scout is currently in development for the United States Navy's VTUAV program with cooperation from Northrop Grumman. The original RQ-8A was based on the 330SP. Sikorsky S-434 Based on improvements developed for the MQ-8B, this is a new version of the 333, having a four-bladed main rotor. Operators Dominican Air Force Saudi Arabian Army Specifications (333) See also References External links Schweizer 333 page on SACusa.com FAA Type Certificate 4H12 1980s United States helicopters 1980s United States civil utility aircraft S-333 S-333 Single-turbine helicopters Aircraft first flown in 1988