As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PART 135 OPS, AIRCRAFT HAD FLUCTUATING N1 IDLE, MAINTENANCE WAS NOTIFIED AND ADJUSTED IDLE. AIRCRAFT WAS THEN SHUT DOWN AND RESTARTED WITH NI IDLE FLUCTUATIONS ACCURING FOR A SECOND TIME. FUEL CONTROL WAS THEN REPLACED AND AIRCRAFT WAS GROUND RAN AND LEAK CHECKED WITH NO N1 FLUCTUATIONS. AIRCRAFT WAS TEST FLOWN AND WAS RETURNED TO SERVICE.