2007-09-19, 19:00
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The "X" in LAX

Before the 1930s, existing airports used a two-letter abbreviation based on the weather station at the airports. So, at that time, LA served as the designation for Los Angeles International Airport. But, with the rapid growth in the aviation industry, the designations expanded to three letters, and LA became LAX. The letter X does not otherwise have any specific meaning in this identifier. Moreover, the X perhaps indicates a blank letter or empty space in the code. Portland International Airport in Oregon also has a similar code PDX.[9] "LAX" is also used for the International Port of Los Angeles located in San Pedro, and for Amtrak-serving Union Station in downtown.