# Failsafe enabled: no local position

Source: https://forum.modalai.com/topic/2307/failsafe-enabled-no-local-position
Category: Flight Core and Legacy VOXL (https://forum.modalai.com/category/9/flight-core-and-legacy-voxl)
Tags: flight-core
Posted: 2023-06-22 21:04:56 UTC by maxwelllwang
Replies: 1 · Views: 1445

## maxwelllwang · 2023-06-22 21:04:56 UTC

I am using v1.11.3-0.2.3 modalai voxl build of PX4 and a modalai flight core using a holybro m8 gps
I have done all calibration multiple times and it flies great in sabilized mode

however when I try to fly in position mode or use Takeoff flight mode, it throws the error Failsafe enabled no local position. 

Conditions for recreation
It usually happens right after arming around 5 seconds. but sometimes mid flight
After reflashing firmware issue doesn't show up until around 5 minutes of the drone being on. But after first occurance happens after every arm
Tested with two different holybro m8 gps and two different gps cables
voxl-vision-px4 has vio turned off.

here is what i see on qgroundcontrol
![1c03d688-f7ef-473f-9f99-ca8defc77e43-image.png](https://forum.modalai.com/assets/uploads/files/1687467881369-1c03d688-f7ef-473f-9f99-ca8defc77e43-image.png) 

here is the corrosponding error message i get on my logs
WARN [gps] Tracking satellite has disappeared from horizon for unknown reason–please check location! 194 66

Here is the link to my log
https://review.px4.io/plot_app?log=270f405a-88bd-4ba7-a4d2-a4eb3258e18dhttps://discuss.px4.io/uploads/default/original/2X/f/fb421bd9f5516857db03f18eec8cdbf50c6f43f3.png

## Reply by maxwelllwang · 2023-06-22 22:54:42 UTC

@maxwelllwang Sorry here is a working link to the log. https://review.px4.io/plot_app?log=270f405a-88bd-4ba7-a4d2-a4eb3258e18d