As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) SPEED DISCREPANCY ON T/O OF 40KTS BETWEEN CAPTAIN AND F/O REJECTED T/O AT 80 KTS AS A RESULT. AS WE PULLED OFF RUNWAY , "AFCS FAULT" EICAS MESSAGE. BEE FOUND IN NR 4 ADSP UNABLE TO REMOVE ALL DEBRIS. NR 4 ADSP REPLACED IAW AMM TASK 34-13-01. CHECK SERV. SENSOR SYSTEMS.