On Jun 7, 6:14*am, Max Kellermann wrote:
Andy wrote:
http://www.onlinecontest.org/olc-2.0....html?dsId=187....

I wonder how this "flight" could have got through even the most basic
reasonableness check. *I assume there is none.

The OLC web site checks just the mathematical correctness of the G
record, but afaik it does not do any plausibility checks. *That would
be quite error prone und unreliable, probably too annoying and not
worth it.

This flight however looks interesting. *It was supposedly recorded
with a Colibri. *He has another suspicious flight:

*http://www.onlinecontest.org/olc-2.0....html?flightId....

I wonder how the "pilot" managed to do this. *Can this possibly be a
GPS reception problem or hardware/software bug, or did he fake the G
record on a made-up IGC file?

Faking G records should be reasonably easy to do. *When vendors keep
their cryptographic specifications secret, it always smells a lot like
snake oil. *My rough guess is that no certified IGC logger would
withstand a real cryptanalysis.

Max

Max Please explain

He has another suspicious flight:

Michael