As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF ROLL, CAPTAIN HAD NO AIRSPEED INDICATION ON PFD, REJECTED TAKEOFF 80 KTS. PURGED NR 1 PITOT TUBE OF FOREIGN MATERIAL AND REMOVED AND REPLACED NR 1 ADC PER AB MM 34-11-34. PERFORMED LOW LEVEL LEAK CK AS PRECAUTION. NR 1 AIRSPEED NOW CKS NORMAL DURING LEAK CHECK. OK TO CONTINUE. PREMATURE REMOVAL/INSTALLATION OFF MFG 4045053-914.