Debug display...

The debug information is displayed underneath the messages display.

The typical debug display...

Plane states...
To/From

• To/From - The Identifiers of the waypoints the plane is the closer.
• Distance - Distance between the plane and the waypoint 
• Trigger - The radius of the waypoint (when distance is lower than trigger and you fly reasonnably at the waypoint altitude as defined in the flight plan, the next flight segment is activated)

Out the track

• Indicates if the plane si triggering or not the track between the two waypoints 

 Track altitude

• Indicates if the plane altitude is between the two waypoints expected altitudes. See Waypoints section for details on how triggering works...

ATC cannot talk...
If the ATC cannot talk to you "ATC COMx CANNOT SPEAK..." is displayed underneath plane state information. The following reasons can be displayed...

Unable to find an ATC with xxx frequency
The frequency you use on your COM1 (COM2 is not implemented yet) is not in the flight plan

 Pilot didn't talk to xxx
You didn't request (or your request has been lost, bug...)

COMx is muted
Make sure your COM1 is not muted

ATC frequency (xxx) is different from plane COMx frequency (xxx)
I think this is deprecated now...

Plane is xxx miles from xxx (xxx miles max.)
You are too far from the closest waypoint that have this frequency (in the flight plan). Note that the altitude matters! The more you fly high, the farther you can talk to ATCs!

Expected state...

Most of the states are labelled the same way than the Plane state but the values can be different! Imagine you have planned to land on a given airport but you fly above it without landing, the ATC will remain stuck on this airport until you land on it! So the Plane state values will indicate the closests waypoints from your plane, but the Expected state will indicate the ATC expectations.

Extra expected states are...

Back on track

• When the ATC considers the plane is back on the track. Should be removed on next updates (just for me when debugging)...

Flight mode

• The flight mode the plane is for the ATC
• This can be temporary. When flying VFR, for example, in some circumstances, the ATC can handle the plane in VFR special mode within a given time frame before setting him back to VFR.

Holding short

• The name of the holding point you are supposed to taxi before bein cleared to take-off, and the distance between your plane and this point. See Taxi charts...