As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF ROLL EICAS MESSAGE "UNSCHD STAB TRIM" EXECUTED SLOW SPEED ABORT. AIRCRAFT BACK TO BLOCK AND GROUNDED BY MAINTENANCE. MAINTENANCE PERFORMED MCDP TEST 65 C/W PER FIM TASK 22-04 FT 811. FAILED TEST. RH STAB TRIM AIL MODULE ASSY REPLACED IAW AMM 27-09-00 + TESTED SATIS. AIRCRAFT RETURNED TO SERVICE.