[ok] Increase maximum allowed turnaround time away from base

[NorgeFly]

This was reduced to 10-hours earlier this year and it makes scheduling at airports with a curfew very difficult or impossible.

Example, an airline based at HND cannot "night-stop" and aircraft at ITM for an early morning departure, as the 10-hour maximum turnaround is not long enough (must land at ITM by 20.55 to meet 21.00 curfew, meaning latest departure is 06.55; too early for the 07.00 opening time). There are lots of airports with 21-7 curfews that are now very difficult to serve.

For a route like this, with very high demand, being able to do extended turnarounds for more flexible scheduling is necessary. Perhaps 12 hours would be a better and more workable limit.

[Sami]

Sure, changing it soon.