It wasn't immediately clear how many people were aboard the Bombardier CL 600. The Federal Aviation Administration said the aircraft crashed at 1:18 p.m. on Monday while the pilot was attempting to land at nearby Truckee-Tahoe Airport. The owner of the aircraft and the flight plan were not immediately made public, although authorities later said it might have come from either Coeur d’Alene, Idaho or Florida. The CL 600 is a multi-seat business jet with twin engines mounted on the rear fuselage and a distinctive T-shaped tail. The jet can hold as many as 14 passengers and two crew.