[Yoshi1951]

Hello,
Have problem on my T-REX 50 with Revo.

Servo motion good.
Hovering in Pitch/Roll Rate and Axislock and Attitude good.
Also Manual, Attitude vario, Attitude hold in Thrust are good.

But when I set GPS assist in [Assisted control], the [CONFIG] on fligth data tab go's red.
Here is my UAV, and I cannot find what is wrong, please someone help.

[f5soh]

GPSAssist is only supported by multirotors.

You should use VelocityRoam
https://librepilot.atlassian.net/wiki/display/LPDOC/GPS+Flight+modes#GPSFlightmodes-VelocityRoam

[Yoshi1951]

Thank's !
I'll try it.