What was found
ON CLIMB OUT IAS DISAREE...REPEAT WRITE UP. DEBRIEF WITH CREW,CREW STATED THAT THE IAS DIFFERENCE WAS 5 TO 10 KN FOR APPROXIMATELY 30 SECONDS. DURING PITOT PRESSURIZATION, FIRST OFFICER SIDE LAGS BEHIND CAPTAIN SIDE BUT STABILIZES AND HOLDS AT TARGET VALUE R & R CAPTAIN'S AOA SENSOR REF AMM 34-12-03 AS PRECAUTIONARY. OPS CHECK REQUIRED AS WELL AS SEALANT. SENSOR, ANGLE CONTINUED TROUBLESHOOTING, AND FOUND LEFT AIR DATA COMPUTER NOT TESTING, SWAPPED LT & RT ADC TO TEST, FAULT FOLLOWED. REMOVED AND REPLACED LEFT ADC IAW AMM 34-12-01. PERFORMED OPS CHECK OF LEFT ADC, NO EXTERNAL FAULTS FOUND, REQUIRES TEST 30. PITOT STATIC CHECK PER AMM 34-11-00 CONTINUES TO SHOW F/O'S AIRSPEED LAGGING THE CAPT'S WHILE INCREASING AND DECREASING AIRSPEED WITH A BIG LAG WHEN THERE IS A LARGE RATE OF CHANGE. PURGED PITOT LINES.