"I'm also using Mission Planner is 1.3.27 build 1.1.5620.38044
I get EKF PRED POS HORIZ ABS when I power up but changes to "Error EKF POS VERT AGL when i get a satellite lock
8 satellite hdop 1.8
I have just flown and everything seems to be working…"

"I just loaded 3.3-rc5 and I'm getting "Error EKF POS VERT AGL" continously"

"I am in the process of building a Tarrot 680 using Multistar 3508-580 motors and Afro 30amp ESCs, expected flying weight 3.3kg, planning to use 12X5.5 propellers
But I have just read this thread and now I have a decision to make, do I continue with…"