DA42 Twin Star
Flight Crew Commercial; Flight Crew Flight Instructor; Flight Crew Multiengine; Flight Crew Instrument
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Landed in Emergency Condition; General Flight Cancelled / Delayed; General Maintenance Action
Aircraft
Student was flying the aircraft. On about a 3 mile final for 9L at ZZZ the aircraft yawed to the left; began beeping and showed both a Left ECU A failure and a Right ECU B failure at the same time. Instructor took controls of the aircraft and determined left engine failed. Requested priority handling feathered the left engine and made a safe landing. After exiting off taxiway; an attempt was made to restart the left engine. Engine started back up but both ECU failures remained. Taxied back to parking.
DA-42 instructor pilot reported left engine flameout on 3 mile final.