Sikorsky S-434

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Schweizer S-434.jpg
Role Light utility and trainer helicopter
Manufacturer Sikorsky Aircraft
First flight 18 December 2008
Status Out of production
Primary user Ministry of the Interior
Produced 2008–2015
Developed from Schweizer S-333
Variants MQ-8 Fire Scout

The Sikorsky S-434 is a light, turbine-powered helicopter. The S-434 is an improved development of the Schweizer S-333.

Design and development[edit]

The prototype S-434 first flew on 18 December 2008 at Horseheads, New York. The S-434 evolved from the S-333, and has many features developed for the MQ-8 Fire Scout. It shares its cockpit layout with the S-333, which gives the crew very good visual capacities and handling characteristics.[citation needed]

On June 15, 2009, Sikorsky announced the delivery of the first two S-434s to Saudi Arabia's Ministry of the Interior, the first of a total of nine.[1]


based on improvements developed for the MQ-8B; powered by one Rolls-Royce 250-C20W turboshaft engine of 320 shp.[2]


 Saudi Arabia

Specifications (S-434)[edit]

Sikorsky Schweizer S‑434 Helicopter[4]

max height: 11.00 ft (3.35 m)
length: 30.83 ft (9.40 m)
max landing gear width: 7.00 ft (2.13 m)
cabin: 67.6 in (172 cm) width * 53.3 in (135 cm) height
fuel capacity: 84.00 gal (317.97 l)
empty: 1,345 lb (610.08 kg)
gross: 2,900 lb (1,315 kg), with external load: 3,200 lb (1,451.49 kg)
useful load, external included: 1,855 lb (841.41 kg)
Turboshaft: Rolls Royce 250-C20W, 320 shp (238.62 kW) at take-off
Rotor: 4 blades, 471 rpm, 27.51 ft (8.38 m) diameter, 792 sq ft (73.58 sq m) area
Tail Rotor: 4.25 ft (1.29 m) diameter

See also[edit]

Related development

Aircraft of comparable role, configuration and era


  1. ^ Sikorsky Global Helicopters to Deliver First Two S-434 Military Helicopters
  2. ^ Sikorsky S-434 page
  3. ^ "Saudi Ministry of Interior takes delivery of Sikorsky's first pair of S434 helicopters". Retrieved 7 March 2013.
  4. ^ "Sikorsky® Schweizer™ S‑434™ Helicopter, 1483_SZR-008_S434_SS.indd 1" (PDF). 15 February 2008. Retrieved 14 June 2013.

External links[edit]