Originally Posted by
Tree
Lost in Saigon;
That is not true of the 6 different aircraft types I have operated
(Lockheed, Boeing, Airbus) In my experience any prolonged exposure to a SAT of -60 or more has caused fuel temps well below -37C and required a modification to the flight envelope. The small Airbus models are especially affected.
I agree that a SAT of -60C can cause fuel to temps to drop below -37C.
But in that case you will get a warning, and if you follow the proper procedure, the fuel temp will not exceed -37C.
The proper procedure is to simply increase Mach or descend until you reach a TAT of -37C or greater. The SAT will still be well below -37C, but that doesn't matter because it is the TAT that will determine the fuel temp.
