What are the IF rules about choosing a flight level where non-US flight levels are in use?
Things I can think of:
- Western Europe: Odd going south
- NZ: Odd going north
- China: flight levels are 100ft higher than US equivalents
- NATS tracks: Level specified on NOTAM, both odd and even work
- Routes jumping between going E and W all the time (like 359, 0, 358, 1, …)
Would you use US flight levels or use what simbrief gives you?