As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) FUEL CONTROL UNIT COULD NOT BE ADJUSTED TO STABILIZE THE IDLE SPEED. AFTER THE START THE IDLE WOULD BE 61-62 PERCENT. BRING THE THROTTLE TO 100% AND BACK TO IDLE, THEN THE SPEED WOULD BE 68-72 PERCENT. FURTHER ADJUSTMENT WOULD NOT CORECT THE PROBLEM. ALSO NOTE THAT THE COMPRESSOR WOULD STALL DURING THE START WHEN THE ENGINE IS WARM.