Top of Descent Calculator

Calculate descent point for managed and open descent modes

Flight Parameters

Descent Mode

Current Altitude (ft)

Target Altitude (ft)

Ground Speed (kts)

Descent Angle (°)

Distance to Destination (nm)

Safety Buffer (nm)

Descent Distance

100.5

nm total descent

Begin Descent In

19.5

nm from current position

Timing

Time to TOD:2:00

Descent time:13:00

ETA TOD:--:--

Parameters

Angle:3.0°

Descent Rate:2388 ft/min

Ground Speed:450 kts

Managed Descent

The FMGC calculates the descent profile backwards from 1000 ft on final approach, maintaining approach speed and considering altitude constraints at waypoints. Uses a mix of thrust and speed to maintain the calculated profile.