Cross feed?

Question

How do you use the crossfeed k**b on Flight Simulator X in a Boeing 737. I have a fuel inbalance in my number 1 (left) engine. And I need to transfer some fuel over from my number 2 (right) enging to the left. Which fuel pump do I have to turn on as well as the crossfeed valve. Thanks for your help.

Answer 1

you turn on the crossfeed and then turn off the fuel pump on the side with less fuel. once it's balanced, turn the fuel pumps back on and then turn off the crossfeed. good luck.

Answer 2

You need to figure out why you have an imbalance first.  If you have a leak on the right side, turning on the crossfeed will just pump more fuel out into the sky. There was a famous crash that occurred due to pilots doing just that, although it wasn't a 737.

Have you left one engine running for an extended period without the other one running?  Have you been using the APU for long periods?  The APU draws from the left tank.

The maximum lateral imbalance is around 1000 lbs across the two wing tanks.  Below this, you don't have to worry two much if there's an imbalance.