sentences:  The flight would originate and terminate there in order for any endurance record to be officially recognized by the Fédération Aéronautique Internationale.Van Nuys was chosen over an existing dirt strip airfield, Mines Field, located at El Segundo, because the weather in Van Nuys was considered more reliable and predictable, particularly in regard to temperature inversions and smog.Metropolitan was also an operational facility while Mines Field had just been procured by the City of Los Angeles for use as a commercial airport.