Sikorsky S-434

Sikorsky S-434 – a light multi-purpose American helicopter, developed by the American aircraft manufacturer Sikorsky Aircraft in 2008.

The helicopter model Sikorsky S-434 is nothing more than an improved version of the helicopter of another American aircraft manufacturer – Schweizer S-333, which appeared in the late 80s of the last century. The intended purpose of the aircraft Sikorsky S-434 has not practically changed – it was also supposed to be used by private owners, for educational purposes, as a patrol helicopter, etc., however, due to the optimization of the design of the aircraft, its flight performance is significantly degrees improved.

The main change that affected the external design was the improved aerodynamic shape of the helicopter, which in addition to providing less drag, also improved visibility, which is important given the actual scope of operation of this aircraft.

Depending on the requirements of the customer, the Sikorsky S-434 helicopter can be equipped with either three or four seats, moreover. If necessary, a certain amount of payload can be placed onboard the helicopter, although, in fact, the helicopter is not used as a vehicle.

The presence of the twin control system of the Sikorsky S-434 model allows you to operate this helicopter as a training aircraft, while aircraft builders can only be equipped with two seats, however, depending on the requirements of customers, the cabin can be further expanded.

The helicopter Sikorsky S-434 was also interested in the armed forces of several Arab countries, in particular, we are talking about Saudi Arabia, which did not exclude the possibility of operating such aircraft to patrol the area, which is mainly facilitated by the sufficient high maneuverability of the aircraft, its compactness, and good visibility from the cab.

The power plant of the Sikorsky S-434 helicopter consists of one Rolls Royce 250-C20W gas turbine aircraft engine capable of developing 420 horsepower. The maximum flight range of this aircraft is limited to a distance of 520 kilometers, with a maximum flight speed of the aircraft at 248 km \ h.


  • Crew: 1 person;
  • Capacity: 3 people (depending on version);
  • Length: 9.4 m. (Depending on version);
  • Height: 3.2 m. (Depending on version);
  • The diameter of the rotor: 8.38 m. (Depending on version);
  • Empty helicopter mass: 610 kg. (Depending on version);
  • Maximum takeoff weight: 1450 kg. (Depending on version);
  • Cruising speed: 220 km \ h.;
  • Maximum flight speed: 248 km \ h.;
  • Maximum flight range: 520 km .;
  • Maximum flight height: 4200 m.;
  • Powerplant: Rolls Royce 250-C20W;
  • Power: 420 hp
Graduated from Embry-Riddle Aviation University with a master's degree in aviation science. He began his career as an aviation researcher in local periodicals. Has a pilot license. Now are the author and developer of the Plane Worlds.