A helicopter crash in central Switzerland on Saturday hurt the pilot and four other occupants -- but a seven-year-old child on board escaped uninjured, police said. Two of the occupants -- the mother of the child and a flight assistant -- were severely hurt in the accident, which occurred as the 45-year-old pilot was attempting to land the helicopter in a parking lot on a military-owned field in the canton of Glaris. The rear of the aircraft touched the ground on approach, unbalancing it, the police said. The helicopter was operated by a firm that transports both passengers and cargo.