Tags: Aircraft.
The Sikorsky S-60 helicopter a prototype flying crane was derived from the S-56 in 1958. Proving to be underpowered the development of the S-60 led to the larger turbine-engined Sikorsky CH-54 Tarhe military transport helicopter and its civil S-64 Skycrane variant which were already on the drawing board by the time the sole example of the S-60 crashed on 3 April 1961.
