I was doing a bunch of testing with an IC engine before the flight and so left the pixhawk armed for a very long time (+1hr).
Everything went very well and it flew a mission perfectly, but the px4 ulog file ends abruptly right after the switch to mission mode: https://review.px4.io/plot_app?log=6cf4fa02-2b5b-4bce-9789-552fa27e550e
I noticed nothing odd when flying, so I don't think it was a power failure.
I also got this good tlog from the qgc telemetry: https://drive.google.com/open?id=1ivNkPorO8Ak7SupxlAJg9CpfxmS0U4v_
which show the good flight:
Is the long arm time reason to cause this behaviour? Should I disarm and rearm in situations like this to have a cleaner log?
Also, what if I wanted to fly for all this time? Is it possible?