As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SFO - TAKEOFF TRIM WARNING ACTIVATED ON TAKEOFF ROLL. TAKEOFF ABORTED WITHOUT INCIDENT. MAINTENANCE INSPECTED TRIM SYSTEM. NO DEFECTS NOTED. ACCOMPLISHED OPERATIONAL CHECK OF TRIM SYSTEM AND AURAL WARNING UNIT. ALL CHECKS NORMAL. UNABLE TO DUPLICATE DISCREPANCY. AIRCRAFT RETURNED TO SERVICE. (M)