9-3· Use the CLR key to select “WPT” on line 1.· Enter the from waypoint. If you wish to use your present location,leave it blank.· Enter the to waypoint. If you wish to use your present location, leaveit blank.· The speed field will display your present speed. You may enter adifferent speed to calculate time and fuel requirements.· Enter the fuel flow in units per hour (e.g., gallons per hour.)The GPS 100 will calculate fuel requirements in the corresponding units(e.g., gallons) required to go from point 1 to point 2. In addition, the timerequirement will be displayed based on speed. Use the cyclic field to selectestimated time enroute (ETE) or estimated time of arrival (ETA).You may calculate the fuel required for a programmed route in a mannersimilar to the trip planning described in Section 9.1.9.3 DENSITY ALTITUDE/TAS (Aviation Feature)Indicated Altitude Calibrated AirspeedAltimeter Total AirSetting TemperatureDensity Altitude True AirspeedDENSITY ALTITUDE/TAS PAGEThe Density Altitude/TAS function will help you calculate critical aircraftperformance data.To calculate density altitude and true airspeed...· Enter the indicated altitude from your altimeter.· Enter your calibrated airspeed. If you do not know your calibrated