Originally Posted by Jano
PRG arrival is in non Schengen zone - the D gates
The departure to the USA is in non Schengen zone - one of them E games.
The end result is that you do not have to go through passport control. This pic might help you
http://content.schiphol.nl/info/plat..._lounge_nl.pdf
I was flying BTS-PRG-AMS-DTW-TYS in May 2005 and I remember I did connect in AMS very fast, maybe some 15 minutes only.
I've easily made it from terminal C through the immigration onto
the terminal F (which is relatively far) in under 20 minutes.
Usually Immigration is a non-issue. it takes less than 5 minutes. But
there are peak times when it may take a little longer.
I think 50 minutes is just fine for any kind of transfer at AMS