Home-Built Plane Crashes, Injuring 2 : Aviation: The accident occurred during an emergency landing on a parking lot at Magic Mountain. The passenger was trapped in the experimental craft for 90 minutes.

Two people were injured Wednesday when a home-built airplane crashed in the Magic Mountain parking lot after it clipped a power line during an emergency landing, flipped and skidded upside down across the pavement, authorities said.

Passenger Jeanette Aelony, 49, of Rancho Palos Verdes was trapped in the wreckage of the Glasair experimental plane for 90 minutes before rescue workers could free her.

She was in serious condition at Henry Mayo Newhall Memorial Hospital in Valencia with several broken bones and a head injury.

Pilot Hal Ballentine, 63, city unknown, was in fair condition at the same hospital with cuts and bruises.

No one on the ground was injured in the 11:30 a.m. crash.

The cause is under investigation.

“I suspect they had some type of malfunction, but at this point, we have no idea what it was,” said Jerry Parrott, Federal Aviation Administration inspector.

“There was fuel on the pavement so that leads us to believe they did not run out of fuel.”

The amusement park was open when the single-engine plane crashed in an empty parking lot at the northern end of the Valencia amusement park.

Magic Mountain spokeswoman Eileen Harrell said three other pilots have used the large lot as an emergency landing strip in the past 10 years. None of those landings, however, resulted in injuries, she said.

Los Angeles County sheriff’s officials said the plane took off from Torrance Airport earlier in the day, but they did not know its destination.

The plane lost power at 7,500 feet and the engine was not running at the time of the accident, FAA Inspector Don Warner said.

As Ballentine attempted to land in the parking lot, a wing reportedly clipped a power line on Feed Mill Road, causing the plane to wobble and then flip when it touched down. Firefighters covered spilled fuel with foam to prevent it from igniting as they worked to free Aelony from the wreckage.

The Glasair is a fiberglass kit plane sold by Stoddard-Hamilton Aircraft Inc., a Washington company that is one of the largest makers of composite home-built aircraft in the country. Christian Klix, the company’s accident coordinator, said none of the planes have been involved in accidents caused by frame failure, but he declined to comment on whether the plane has crashed for other reasons.