LOS ANGELES: A cargo plane being unloaded at Los Angeles International Airport tipped backward Thursday, stranding seven workers 40 feet in the air for about an hour.

No one was hurt in the accident, which authorities said occurred because a stabilizing jack hadn’t been placed beneath the rear of the aircraft. “As soon as they took whatever it was out of the back of the plane, the weight shifted and the plane just went back on its tail,” fire department spokesman Bob Collis said. The workers were rescued by firefighters using a ladder truck, Collis said.