As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
1 AND 2 ENGINES HAD 15 PERCENT TORQUE SURGES AT 400 FEET ALTITUDE. REACHED 105 PERCENT TORQUE. REDUCED TORQUE TO 4 PERCENT. SURGE STOPPED. RETURNED TO FIELD. REMOVED AND REPLACED THE RELAY PANEL AT THE CAPTAIN`S SIDE CONSOLE. GROUND RAN AIRCRAFT FOR BETA BACKUP TEST WITH LOCKOUT SYSTEM. OPS CHECKED GOOD.