Hi folks,a little question about the way of using the center tanks.are the center tanks pumps on for engines start?are the center tanks pumps on for take-off and landing(i think it should be "no").So,at what part of the flight would i used the center tanks.I have read center tanks is always used first,but do you have to wait for it to be completely empty?Then,at what moment do you open the crosfeed valve?only when the center tanks is empty?Thanks for your lights.olivier sinnaeve,Belgium.:-outta

Hi Olivier,Did you try an advanced seach for center tank in the forum? I know this was widely discussed a while ago and that some really good information was posted.Hope it helps,

Here's the link to one post which quotes the original Boeing notice:http://forums.avsim.net/dcboard.php?az=sho..._id=58183&page=Hope it helps,

Thanks guys,great info.olivier sinnaeve