Originally Posted by
mfkne
...and therefore subject to compensation.
Maybe.
In massive IRROPS covering a good part of Western Europe, it is quite possible to have too many crews out-of-position or timed out. The good news about KL at AMS is that if there is a reserve crew to be had, it will be at AMS. The bad news is that there comes a point at which everything is stretched too far and when it is at one's worldwide hub, there is no place to go for more.
People make the same assertions about AF at CDG, LH at FRA and BA at LHR.