The Digiflo-L is a Digital Fuel Management System designed to provide complete fuel management information under real flight conditions without any manual entry of data (after entry of the initial fuel on board information). Digiflo-L is connected to the engine fuel flow transducer for fuel flow information and to the Loran-C or GPS receiver serial port for navigation data (ground speed, distance and estimated time en route). This system is also capable of transmitting the fuel information to the BendixKing KLN-88, KLN-90, and Garmin GPS navigation receivers, for additional calculations and display of fuel management data.