TWA Flight 3 crashed into Potosi Mountain in Nevada, killing actress Carole Lombard and all of the other 21 people on board.

TWA Flight 3 was a twin-engine Douglas DC-3-382 propliner, registration NC1946, operated by Transcontinental and Western Air (TWA) as a scheduled domestic passenger flight from New York, New York, to Burbank, California, in the United States, via several stopovers including Las Vegas, Nevada. On January 16, 1942, at 19:20 PST, fifteen minutes after takeoff from Las Vegas Airport bound for Burbank, the aircraft was destroyed when it crashed into a sheer cliff on Potosi Mountain, 32 miles (51 km) southwest of the airport, at an elevation of 7,770 ft (2,370 m) above sea level. All 22 people on board, including movie star Carole Lombard, her mother, Clark Gable's press agent, Otto Winkler, three crew members, and 15 U.S. Army soldiers died in the crash. The Civil Aeronautics Board (CAB) investigated the accident and determined that the cause was a navigation error by the captain.

Potosi Mountain is approximately 30 miles (50 km) southwest of Las Vegas in the Spring Mountains of Clark County, southern Nevada, United States. It is also called Double Up Mountain and Olcott Peak. Its main bedrock is limestone.

Nevada is a landlocked state in the Western United States. Nevada is also sometimes placed in the Mountain West and Southwestern United States. It borders Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast, and Utah to the east. Nevada is the seventh-most extensive, the 32nd-most populous, and the ninth-least densely populated U.S. state. Nearly three-quarters of Nevada's population live in Clark County, which contains the Las Vegas–Paradise metropolitan area, including three of the state's four largest incorporated cities. Nevada's capital is Carson City. Las Vegas is the largest city in the state.

Carole Lombard was an American actress, particularly noted for her energetic, often off-beat roles in screwball comedies. In 1999, the American Film Institute ranked Lombard 23rd on its list of the greatest female stars of Classic Hollywood Cinema.