Originally Posted by
mustangsally
I've only flown one 74 with Prat power, god bless Miss Piggy.
Even several year ago, when FL temperatures across central/eastern Europe were extremely low, the whale has a hot wing. Don't think I've ever seen the fuel temperature ever approach with in plus ten of the fuel freeze point.
The procedure was always to speed up, maybe M.86 or a bit more or lower FL or both.
Concerning fuel freeze point in the fuel tanks, I have definitely seen it get down to three degrees of the freeze point(Jet A fuel) on the 744. Flying over Russia with OAT around -60. We sped up a bit by going to LRC and the temperature did stabilize with an increase in fuel burn noted. Something to consider as a reason to take some extra fuel if your company is not monitoring this and the flight plan shows really cold temps for quite a while and JET A temps are being used(within last three fuelings).
Sure would be nice if they used Jet A-1 in America.