Cessna Citation Mustang (C510)
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Commercial
Flight Crew Last 90 Days 48; Flight Crew Total 866; Flight Crew Type 168
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Provided Assistance; Flight Crew Landed As Precaution; Flight Crew Requested ATC Assistance / Clarification; Flight Crew Returned To Departure Airport; General Flight Cancelled / Delayed; General Maintenance Action
Aircraft
While being vectored for the visual approach at ZZZ; approximately while descending through 5;000 feet; the Amber CAS message (ENG CTRL SYS (L-R)) appeared as well as the Master Caution System light; I referenced the Manufacturers Emergency/Abnormal Checklist which dictated the first step is to reset the FADEC to the affected side; which in this case was both sides; the checklist goes on to say if the CAS message clears then no further action is required; or if the CAS message remains; to land as soon as practical. The checklist also goes on to advise of the possible effects that may be encountered; they are:- Degraded or lack of response to throttle movements including possible surging or flameout.- Possible inability to restart.- Possible inability to achieve ground idle.- Loss of automatic Interstage Turbine Temperature (ITT) limiting during ground idle.- Loss of automatic ITT limiting during ground or windmill starts.- Loss of ITT indication.The message did not clear after the reset; and given the possibility of a flameout; I chose to land ASAP; I notified ATC and requested to proceed directly to the final approach course for landing. ATC complied with my request and gave me priority. The landing was uneventful; but on the landing roll out; the L Engine Fail Warning CAS message came up; it distinguished about 15 seconds later; then appeared once again about a minute later during taxi and stayed on for 10 seconds then went away.Once I arrived to the ramp at the FBO I shut the engines down and powered down the aircraft with no further incident.
C510 pilot reported the left engine control failed while on vectors for a visual approach.