As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRIOR TO V1 ACFT NOSE BEGAN TO LIFT OFF GROUND, AND BY VR AIRCRAFT WAS ROTATING ON ITS OWN TOWARD GO-AROUND SET COMMAND BARS. REQUIRED EXCESSIVE FWD NOSE DOWN TRIM DURING CLIMBOUT. NOTICED ON LANDING THAT INSTEAD OF THE USUAL -5.5 TRIM I USED -4.7. PERFORMED ACFT WEIGH JOB IAW THE MM CHAPTER 8-10-00. PERFORMED AIRSPEED CALIBRATION CHECK IAW THE MM CHAPTER 34-11-08, LEAK AND OPS CHECK NORMAL. PERFORMED HORIZ STAB TRIM SYS - ADJUSTMENT TEST IAW THE MM CHAPT 27-40-00. OPS AND TRAVEL CHECKS WERE NORMAL.