In November 2009, a Piasecki helicopter struck high tension wires shortly after departing from Adelanto airport as it headed for an airshow in Riverside, California.  The helicopter crashed and burned, and all three aboard were killed.  (see full story)

See also HeliHub.com accident page – 07-Nov-09 N183YP Piasecki PV-18 Adelanto, US-California (3F)