What was found
PDX FLIGHT NR 2416: IAS MISMATCH CAUTION LIGHTS ALONG WITH ELEVATOR FEEL, PITCH TRIM, SPOILER OUTBOARD AND RUD CONTROL ILLUMINATED. AIRCRAFT RETURNED TO FIELD. MAINTENANCE PERFORMED PURGE OTH NR 1 AND NR 2 AND STANDBY PITOT/STATIC SYSTEMS IAW TASK CARD 341100201-60083-CMBD. FOUND WATER IN NR 1 AND NR 2 PITOT. PITOT/STATIC LEAK CHECK GOOD IAW TASK CARD 6341102. NO MISMATCH IN AIR DATA DISPLAY AND NO FAULT OR CAUTION LIGHTS. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.