Made ya look!
But seriously, I've just had a discussion with our Engineering Folks and there seems to be a difference of opinion about what a Topping check is actualy checking.
When I was a "Baby Pilot" I learned that "Topping" was a function of fuel flow. Now I understand that it is a total performance check of the engine(s) wrt to N1/Ng, T5/TIT/TOT and Q available, but isn't it really checking the limiting factor of fuel flow in a given DA condition?
Your thoughts are most welcome.
Cheers
OffshoreIgor