As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:N/A (BTB) DURING TAKEOFF INITIAL ACCELERATION F/O''S EADI BLANKED. REPLACED NR 2 VERT GYRO PER BMM 34-22-21. NOTE: THIS SAME NR 2 VG WAS REPLACED ON INB FLT FOR A 5 DEGREE ROLL. THE S/N REMOVED FROM BTB IS 81144914, THE PIREP DEBRIEF, INDICATED THE EADI BLANKED WHEN A/C WAS TURNED OR BRAKED DURING OUTBOARD TAXI. A/C DEPARTED WITHOUT FURTHER PROBLEMS.