What was found
LT FUEL QUANTITY ANNUNCIATOR ILLUMINATED THROUGHOUT ENTIRE FLIGHT 20 MINUTE FLIGHT, PERFORMED TROUBLESHOOTING OF FUEL INDICATING SYSTEM, FOUND THE LOW FUEL QTY. SENSOR TO BE MALFUNCTIONING, REPLACED PART IAW MANUFACTURERS RECOMENDATIONS, PERFORMED AN OPERATIONAL CHECK, SYSTEM WORKS PROPERLY, SIGNED OFF WRITE UP AND RELEASED AIRCRAFT FOR FLIGHT.