page_title: Schweizer S333
section_title: Variants
hierarchical_section_title: Schweizer S333 / Variants
caption_attribution_description: English: Cropped version of en:Image:Fire Scout unmanned helicopter.jpg.
context_page_description: The Schweizer 330 and S333 are turbine-powered developments of the Schweizer 300 light piston-powered helicopter. As of 2007, only the Schweizer 333 remains in production. In February 2009, the 333 was rebranded as the Sikorsky S-333. In 2018 the Schweizer R.S.G. bought the Schweizer Aircraft from Sikorsky Aircraft and it was rebranded as Schweizer S333 again.
context_section_description: 330
  Using the 300C dynamic components, Schweizer mounted a Rolls Royce 250-C10A engine to the airframe and developed a new four-seat cockpit/cabin and body.
  330SP
  improved rotor and raised skids, Rolls Royce 250-C20W engine.
  333
  Featuring new dynamic system components, new rotor blades, and 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.
caption: A RQ-8A Fire Scout helicopter preparing to land on the USS Nashville
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