iFly GPS Forum

John, for how long is a typical GPS outage?   Can you give me an idea of the duty cycle here? (how often does it stop tracking GPS position, and for how long does this outage typically last, and are there any actions that you take which seem to "bring it back"? e.g. restarting iFly?)

If you can have him "Send Bug Report => Select File" and then select the logs time stamps that are associated with the time when the issues happened, I will check the log for clues.

I had a tablet, which I have since relegated to home duty, that had what may be similar issues.  I was getting real spotty movement, and a lot of "No Heartbeat" messages in the ADS-B Status "instrument".  After looking at my logs, both regular and ADS-B, Brian determined that the tablet was frequently dropping and re-establishing the WiFi connection to the ADS-B unit, from which it was getting GPS data (the tablet itself did  not have GPS).  If your friend doesn't have it on the screen already, I would suggest you have him add the ADS-B Status instrument so you guys can monitor that activity.

Regarding your friend's plane being at the home airport at tablet startup: if he had flown out to this other airport using a flight plan in iFly, and he doesn't clear the flight plan (or reverse it, or create a new one) before shutting down, then when he brings iFly back up at that non-home airport it will initially show him at the origination point of the flight plan (his home airport) -- that is, until it gets a GPS reading.  Which it may not be getting. 

To me, it seems to be a GPS issue.  Either the built-in GPS is not working right (or doesn't exist), or iFly is not getting (or not consistently using) GPS data from another source.  My two cents.  But Brian will no doubt be able to figure it out from the logs.

HOOK:

He has no ADSB. This tablet worked for 3 years. I did have this issue very infrequently on my LG Gpad, but again it was while approaching Palmdale Skunks Works. As I mentioned to Brian in my most recent reply to him one consideration was that these failures have occurred within 5 miles of March AFB. I am wondering about purposeful GPS interference as like what is happening in the Southeast.

John M