Hi, friends.

I have aquired a Pixhawk 3DR in last December and, til now I have test bench only, installed on an Anaconda plane.

I have Mission Planner 1.3.27 and APM V3.3.0 installed on a Win7 computer.

Today, when I powered everything as usual, I have those errors over the HUD, with the pixhawk armed or desarmed:

- "Error EKF PREP POS HORIZ ABS", and

- "Error EKF CONST POS MODE".

As is the first time I saw those errors, I don't know the right meaning of them.

It's possible flying safety with those errors? Only in manual modes, or may be in automatic modes also?

I'd appreciate any advise. Thanks.

Frederico Fernandes.