Boeing 737-500
United Airlines Boeing 737-522, N904UA, is shown arriving at Los Angeles in March 1993.
United Airlines Boeing 737-522, N912UA, is shown approaching Los Angeles International Airport on February 13, 1999 wearing the
carrier's updated 1994-introduced livery.
United Airlines Boeing 737-522, N913UA, is shown at Salt Lake City International Airport on May 11, 1999, wearing the titles of United's
low-cost unit, "United Shuttle."