What was found
AFTER 80KT SPEED CHECK ON TAKEOFF ROLL, FIRST OFFICER LOST AIRSPEED WITH FIRST OFFICER`S SPEED IN RED FOOT. FIRST OFFICER HAD 40 KT ERROR IN V INDICATION. ROTATED & CLIMBED ON PITCH POWER. RAN QRH & DUMPED 20K FUEL, CAPTAIN`S SIDE NORMAL. LANDED 18C BOTH AMBER IAS & ALT LIGHTS PLUS OTHER ERRONEOUS ALERTS. FOUND INSECT REMAINS IN FIRST OFFICER'S PITOT TUBE. ORDERING NEW TUBE & WILL ALSO PERFORM PURGE OF FIRST OFFICER'S PITOT SYS. R & R FIRST OFFICER'S PITOT TUBE IAW AMM 34-11-01-2. ALSO PURGED FIRST OFFICER'S & CAPTAIN'S PITOT LINES IAW AMM 34-11-00-2. AS A PRECAUTION, R & R FIRST OFFICER'S AIR DATA COMPUTER IAW AMM 34-16-01-4. LEAK CHECK IS GOOD. HOWEVER, DURING OPERATIONS CHECK, NOTED THAT FIRST OFFICER'S AIRSPEED READOUT IS 3 KTS. HIGHER THAN CAPTAIN'S & 4 KTS. HIGHER THAN TEST SET. SUSPECT POSSIBLE BAD ADC FROM STOCK. WILL R & R FIRST OFFICER'S ADC AGAIN. AFTER REPLACING AIR DATA COMPUTER AGAIN IAW AMM 34-16-01-4, FAIRING AOA VANES & CHANGING TEST SETS, ALL PITOT-STATIC LEAK & OPERATIONS CHECKS WERE NORMAL IAW AMM 34-11-00-2. PITOT TUBE STILL REQUIRES SEALANT. HOWEVER, DUE TO OUTBOUND FLIGHT, SEALANT WILL BE PLACED ON OIL. THIS ITEM WILL BE FACTED.