Originally Posted by no-hoper
ATR 72 has PW 124/127 engines.Q-400 PW 150.Only the first digits are the same...
I assume that basic engine architecture is similar. So the value might be scalable. Anyways, I just need a rough guess to check versus the ATR72 Descent table. I am using SFC-based engine model, which works well in cruise but fails for descent (as zero thrust means zero fuel when using SFC).