Sikorsky S-434 Certification Imminent

AINalerts » December 20, 2011
Sikorsky S-434
Sikorsky predicts that it will certify its S-434 next year.
December 20, 2011, 4:10 PM

Sikorsky is now anticipating FAA certification of the S-434 light single for early next year, slightly later than the previous target date, which was this month. An improved Schweizer S-333, the S-434 sports a four-blade rotor, a new tail-rotor blade design, a structurally enhanced landing gear, a new trim system and an improved Kaflex driveshaft. The main rotor and its transmission come from the unmanned Fire Scout. The S-434 and the S-333 use the same Rolls-Royce 205-C20W turboshaft, which provides 320 shp. The new main rotor allows the mtow to increase by 300 pounds, to a maximum 2,850 pounds. This translates into a useful load of “more than 1,400 pounds.” The new tail rotor can generate some 20 percent more thrust than the tail rotor on an S-333. Sikorsky has not yet decided whether it will continue to produce the S-333 once the S-434 enters production. “We expect to conduct a market analysis early in 2012 to determine this,” a spokesperson told AIN.

Share this...

Please Register

In order to leave comments you will now need to be a registered user. This change in policy is to protect our site from an increased number of spam comments. Additionally, in the near future you will be able to better manage your AIN subscriptions via this registration system. If you already have an account, click here to log in. Otherwise, click here to register.