As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, THE LT ENGINE SURGED 10 PERCENT AND THE CREW RETURNED TO DAY. MAINTENANCE INSPECTED AND REPLACED THE NR 1 CONTROL AMPLIFIER IN ACCORDANCE WITH BOMBARDIER AIRCRAFT MAINTENANCE MANUAL 72-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.