What was found
SEA- AFTER TAKEOFF 6 CAUTION LIGHTS CAME ON, PITCH TRIM, ELEVATOR FEEL, PROP DEICE, RUD CTRL, SPLR OUTBOARD, AND ROLL SPOILER OUTBOARD HYD. THE ADU C/B ALSO HAD TRIPPED. DIVERTED TO PDX. LANDING UNEVENTFUL. REMOVED AND REPLACED NR 2 AIR DATA UNIT IAW CAT 3 TC 6341101. NR 2 ADU OP'S TEST GOOD. ACFT REMAINS CAT 3 QUALIFIED, PLACARD READS CAT 3. RETURNED TO SERVICE.