Two people were killed in the crash, including the pilot and a woman on
The small plane crashed into a house and exploded, killing the house's occupant and injuring another man.
The pilot had been hired to perform stunts at the festival marking the 303rd anniversary of San Joaquin's founding.
Eyewitnesses said the plane loosed control, crashed and exploded with screams of horrified witnesses in the background.
A stunt pilot also lost his life recently when performing a trick at CarFest in Oulton Park, Cheshire.
The event was organised by Chris Evans, who paid his respects to deceased Kevin Whyman on his Radio 2 show.