As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. DURING TAKEOFF ROLL FLEX DID NOT ANNUNCIATE ON PFD AND AUTO THROTTLE DID NOT ARM. REINSPECT OCCURRED BELOW 80 KNOTS. TAKE OFF ABORTED. MAINTENANCE ACCOMPLISHED SYSTEMS TEST IAW AMM 22-30-00 WITH NO FAULTS FOUND. REFERENCE IN SERVICE MFO 72-00-00023 "WITHOUT CLOSE TO FLEX TAKE OFF, FINDING WILL RETEST FLEX TO FLEX TEMP NEEDS TO BE HIGHER THEM ACTUAL OAT".