Houston, Texas - PRELIM INFO FROM FAA OPS HOUSTON TX UAS INCIDENT 1510C HOUSTON TRACON ADVISED SOUTHWEST 166

PRELIM INFO FROM FAA OPS: HOUSTON, TX/UAS INCIDENT/1510C/HOUSTON TRACON ADVISED SOUTHWEST 166, B737, LAX - HOU, OBSERVED A BLUE AND WHITE, 4 PROP, UAS ABOUT 2 FEET IN DIAMETER AT 3,400 FEET 13 SW HOU. NO EVASIVE ACTION TAKEN. LEOS NOT NOTIFIED.