PAGE 6-2  FLIGHT DECK PREPARATION  CHAPTER 6 

TS-1 (which is found in Russia and is an approved fuel), no freeze testing will be done, given its minimum freeze point of -50 C.
If the crew is concerned about the fuel temperature on the return flight then an appropriate value depending on the type of fuel loaded ( for example a 44 value (Jet A-1 min freeze temp of -47 +3 = -44) could be entered into the FMC to preclude an inappropriate FUEL TEMP EICAS message based on the default value of -37.

6.3 FMC Preflight
Flights through the Area of Magnetic Unreliability (AMU) and Polar Regions will result in significant differences between the FMC legs headings/courses and the flight plan headings/courses. The waypoint distances, however, should agree within a few miles. The true course and true heading are key elements on the flight plan and legs pages within the AMU. These should agree with the “T” courses found on the Jeppessen charts for established published routes such as in the NCA structure.
Loading of enroute winds is absolutely paramount to insure accurate ETA and fuel predictions. If the enroute winds do not uplink, they must be manually loaded to insure FMC accuracy. Failure to load enroute winds may result in an INSUFFICIENT FUEL message.