SR20
Flight Crew Flight Instructor; Flight Crew Commercial
Aircraft Equipment Problem Critical
Flight Crew Returned To Departure Airport
Aircraft
While on the VOR/DME-A approach; the engine power indication dropped to zero percent for a few seconds before returning to 75%. All other engine instrument indications were normal. Instructor contacted ATC and returned to [departure airport] via the Arrival. No further engine indication abnormalities occurred during return flight.
A flight instructor operating a Cirrus SR20 reported a momentary loss of engine power indication.