Strange turnaround (cabin cleaning) times B739 vs. B738

@yukawa @Fluggast07 @Ulafme

Here is the link to the German forum from 2015, where the Problem is discussed and Martin explained why things are the way they are. He also aknowledges the problems:

I was shocked to see that these issues have been known for over three years without anyone doing anything about them. I have played AS since 2008 and stopped in 2013. Just got back into it again, playing on a couple of legacy servers, but also wanted to try the current Version, so signed up to Hoover. Completely unplayable due to the unpredictabilities of DTA and especially cleaning. I am gonna close my account on Hoover again. Shocked this has not been fixed in such a long time.