Dani
The A330/A340 has the following caution FUEL FUEL LO TEMP
This caution appears, as soon as the inner tank temperature is less than —37°C, or outer or trim tank temperature is tess than -40 deg C. However, at this threshold: Crew action is required for JET A FUEL only, and no crew action is required for other fuel types.
For all other fuel types : This caution will automatically be recalled, if the temperature reaches - 44cC (inner tank temp), or —47°C (outer or trim tank temp). However, regardless of the fuel type, the crew may consider delaying application of the procedure, until reaching the minimum fuel temperature specific to their fuel type (Refer to 3.01.28, page 1).
• On ground, before takeoff:
• IF JET A:
DELAY T.O.
Do not takeoff until the temperature is within limits.
• In flight
• If inner tank temp is less than —37°C (auto recall at —44°C)
Crew awareness.
• If outer tank temp is less than —40°C (auto recall at —47°C)
• IF JET A (not displayed at —47°C)
— OUTER TK TFR . . . . . . . . . . . . . . . . . . . . . . ON
• If trim tank temp is less than —40°C (auto recall at —47°C)
• IF JET A (not displayed at —47°C)
— TRIM TANK .................................................ON
If the trim tank pump fails, this part of the procedure is replaced by:
WHEN SPD> 270 KT AND NOT IN CLIMB:
—T TANK MODE FWD
— Fuel consumption increases by approximately 7%.
• IF NECESSARY:
— TAT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INCREASE
Consider descent to a lower altitude and/or increasing Mach to increase TAT
The temperatures shown are dependent on engine type but only vary by 1 or 2 degrees. There is also a fuel temperature prediction program offered by Airbus that will predict fuel temperature issues on a given flight route, aircraft type and current met data.
Personally given the flight phase this occured, I wouldnt have thought it would be fuel waxing issue but as with most I'm awaiting the accident report.