What was found
ON T/O ROLL AT 80 KNTS CALL, F/O AIRSPEED INDICATED 50 KNTS. CAPTAINS AND STBY AIRSPEED INDICATED 80 KNTS. REJECTED TAKEOFF AT 90 KNTS. R & R F/O'S PITOT PROBE IAW MM 34-11-15-4. OPS CHECKED GOOD IAW MM 34-10-00-5 (FLIGHT ENVIRONMENT DATA TEST). F/O'S LEAK TEST OK. BOTH SIDES HAD GOOD INTEGRITY CHECKS, HELD AT 6 PSI FOR 15 MINS WITH NO LEAK DOWN. A/C READY FOR SERVICE. ALSO BLEW AIR LINE FROM NR 2 ADC FWD USING NITROGEN PSI, NO DEBRIS FOUND IN LINE, BUT OLD PITOT PROBE HAD DEBRIS, VERIFIED AFTER REMOVAL FROM ACFT. (CLOSED)