Abstract: At approximately 10:00 p.m. on January 16, 2004, a motion picture set lighting technician was working in an aerial lift device approximately 50 feet in the air. The aerial lift was used to hold two "18 K" stage lights to illuminate a movie set at a residence. The original operator was not available to report to work that day and the Best Boy Grip asked another employee to fill in as the lift operator. The lift was extended in the air and parked on a cement driveway with a slight, 1 to 3 degree, incline. The motor was then turned off and the lighting technician remained in the elevated basket for about two hours. The lift began to slowly tilt to one side, eventually falling into another aerial lift. The employee rode down in the basket as it was laying on the second lift. Wind was reported to be slight. The articulating aerial lift was a JLG, Model Number 800AJ, and Serial Number 139679-0300055533. The employee suffered a fractured left ankle on lacerations to his leg and was hospitalized.