Hi there, I'm new in this forum and after scanning the last 100 pages i couldn't find the right topic. (I'm also no able to find any "search" button on the forum)So, sorry in advance if it's a frequent question on the forum.I'm surprised to find that there's no difference between the 737-800 and 737-900 concerning the Max ZWF, Max Gross Weight and Max Fuel on board !The only difference i've found was the total of passengers (174 for -800 and 186 for -900 in single class conf). I've checked the different aircraft.cfg as well as FMC values.How is it possible?Is this correct? Do I have any .cfg corruped? (Witch could be possible as I've at first "played" with Topcat to send config to plane.)Thanx in advance for your help.

Yes that is correct. In fact the 900 is something of an anomaly because if fully loaded with PAX it doesn't have the range of the 800 due to the increased payload weight needing the fuel weight to be reduced. Probably why not so many have been sold.Iain Smith

Ok ! Many thanks for your explanation. It's indeed a weird concept !