Paradise Airlines Flight 901A crashes near Lake Tahoe, Nevada, killing 85.

Paradise Airlines Flight 901A was a scheduled passenger flight from San Jose Municipal Airport to Tahoe Valley Airport, both within California, USA. On March 1, 1964, the Lockheed L-049 Constellation serving the flight crashed near Genoa Peak, on the eastern side of Lake Tahoe during a heavy snowstorm, killing all 85 aboard. After the crash site was located, the recovery of the wreckage and the bodies of the victims took most of a month. Crash investigators concluded that the primary cause of the accident was the pilot's decision to attempt to land at Tahoe Valley Airport when the visibility was too low due to clouds and snowstorms in the area. After aborting the landing attempt, the flight crew lost awareness of the plane's location as it flew below the minimum safe altitude in mountainous terrain. The pilot likely tried to fly through a low mountain pass in an attempt to divert to the airport in Reno, Nevada, and crashed into the left shoulder of the pass. At the time, it was the second-deadliest single-plane crash in United States history, and remains the worst accident involving the Lockheed L-049 Constellation.

Lake Tahoe is a freshwater lake in the Sierra Nevada of the Western United States, straddling the border between California and Nevada. Lying at 6,225 ft (1,897 m) above sea level, Lake Tahoe is the largest alpine lake in North America, and at 122,160,280 acre⋅ft (150.7 km³) it trails only the five Great Lakes as the largest by volume in the United States. Its depth is 1,645 ft (501 m), making it the second deepest in the United States after Crater Lake in Oregon.

March 1 is the 60th day of the year in the Gregorian calendar; 305 days remain until the end of the year.