I am seeing an odd issue with the FLEX settings in the take off settings.I am setting up a T/O from TNCB with a GW of 523.7 thousand lbs. OAT is 25 deg C. If I set FLEX TEMP to 46, I get a thrust limit of 105.8, if I set it to 47, the thrust rating becomes 81.9, at 48 it drops to 58, at 49 it goes to 81.2 and at 50 it goes back to 104.4. Is there a reason for this? It doesn't match what I would expect, nor does it match TOPCAT, which shows a somewhat linear progression across various flex temps. I caught it the hard way, because I had set 47 for my takeoff, and wasn't even close to making it.I have not found anything that explains this - so any input appreciated.Joe Lorenc

That seems very odd to me. Does it happen allways, or did it only happen once? I haven't ever seen such behaviour, however I don't want to say that it isn't there.

It has happened more than once, but, at the same airport with the same weather, etc so far. (ended up restarting the same flight a few times for various reasons) Restarts were "fresh" not loaded from a saved state.Finally got that flight underway and in it now (TNCB-EHAM), will be doing a different hop this weekend.