Ground Station Mode Lock
The ground station mode lock (FLTMODE_GCSBLOCK) sets which flight modes may be switched from the ground station. It exists so a mis-click on the GCS cannot put the aircraft into a mode that brings it down.
Setting the mode lock

TIP
Some flight modes (shown in grey) cannot be blocked from GCS switching, so that the system keeps working as intended.
Once the lock is set, blocked modes no longer appear on the flight data screen.


