What was found
ON CLIMB OUT PASSING 14000' GOT ALT DISAGREE CAUTION, FOLLOWED BY IAS DISAGREE AT 17000'. RAN QRH & DETERMINED FIRST OFFICER`S SIDE TO BE ERRONEOUS BY COMPARING CAPTAIN`S & FIRST OFFICER`S TO STBY. AS ACFT CLIMBED SPLIT BECAME GREATER. AT FL 270 ON CAPTAIN`S & STBY AT 321 KTS. FIRST OFFICER'S SIDE READ 331 KTS & FL 274. COMPLETED FLIGHT WITH FIRST OFFICER`S SIDE AIR DATA IN ALTN. DURING TROUBLE SHOOTING DISCOVERED MOISTURE CAP REMOVED FROM FIRST OFFICER`S SIDE ADM. SECURED MOISTURE RELIEF CAP & PERFORMED ADM CHECK USING 34-26-03-4, OPERATIONS CHECKED OKAY AT THIS TIME.