Light Penalty

[nem]

Interesting stuff. I'd say that in some cases nav lights are used isntead of the anticollision lights mentioned in (b) which would explain why many
seem use them at daytime as well.

Well, maybe it's up to region/airline, maybe a real world pilot could clarify this... I don't know.

@Tim:
3. I think FSP doesn't monitor taxi lights anyway. Which is good, because they are pretty often used as needed, turned off when waiting at a holding
point, etc.
4. When entering. The holding point ist still taxiway AFAIK.
5. You leave them on.
6. See 5.

HTH