What was found
1) REJECTED TAKEOFF AT APPROX. 90 KTS DUE TO NO AIRSPEED INDICATIONS ON CAPT. OR F/O'S AIRSPEED INDICATIONS. NORMAL BRAKING & REVERSE USED.2) PERFORM AISPEED INDICATOR FUNCTIONAL CK BOTH CAPT & F/O CKS GOOD IAW DC 8 MMS 34-11-00. PERFORM PITOT LEAK TEST WITH DPS 350 TESTER CHKS GOOD IAW DC 8 MMS 34-12-00 LEAK CHK CAPT. FO & ALT SYSYTEM PERFORMED ALL