ASPEN, Colo. (AP) _ Investigation of a plane accident that left actress Sally Field and her family doused with jet fuel was delayed Monday as crews worked to free the jet's nose from the side of another plane.

National Transportation Safety Board investigator Greg Feith said he spent the weekend at Pitkin County Airport examining the jet, which aborted takeoff Saturday and crashed into two parked airplanes.

He said crucial electronic evidence was inside the jet's cockpit, which remained embedded in another plane.

Field, 41, had been en route to Burbank, Calif., when the Canadair CL-600 Challenger began leaking fuel and apparently went out of control. Also on board were her film producer husband, Alan Greisman, 41, her 11-month-old son, Sam, and mother, Margaret O'Mahoney, said Pitkin County sheriff's spokesman Steve Crockett.

Field, her family and a flight attendant were shaken but unhurt, while the pilot and co-pilot were treated for cuts and bruises, Crockett said.

Feith said he expected to finish his on-site investigation Tuesday, and examination of evidence in the cockpit could take several more days. He said he also would interview the flight crew and passengers.

Field, a two-time Oscar winner and star of the movie ''Punchline'' who owns a home overlooking Aspen, had borrowed use of the private jet from producer and former talk-show host Merv Griffin, according to Griffin's Los Angeles publicist, Warren Cowan.

Griffin's jet had flown to Aspen to pick up Field after taking Griffin and actress Eva Gabor to Griffin's Monterey, Calif., ranch earlier Saturday, Cowan said.