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Guest mikeflu

Fuel pump question

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Guest mikeflu

Hi all. I was just wondering, even though damage is not modeled, should you turn off the center fuel pumps on the 737NG when you have exhausted the fuel in the center tank? This is just for realism's sake. Thanks in advance.Mike FluhartyJamaica, IA, USA

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Guest pierre974

I think so :-)

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Mike,Yes, you should actually let aprox 500kg or 1000lbs of fuel be left in the centre tank to keep the fuel pumps submerged. Hope it helps,


Mats Johansson
PMDG Flight Test Dept
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Guest mikeflu

Thanks for the replies, and yes it does help. Thanks again, Mike

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I have a question about the 737-700. I flew a flight lately where both of my wing tanks emptied and I could not get it to draw from the center tank. How do I correct this?

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Guest 102301636

ensure you have the center fuel pumps in the on position, thats all thats too it

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Todd,Alan is correct. Also you should usually draw fuel from the centre tank first, then the wing tanks. That is if you have more than 500kg/1000lbs in the centre tank. Hope it helps,


Mats Johansson
PMDG Flight Test Dept
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| Asus Z270-A | Intel i5-7600K @ 4.8 GHz OC/H2O | nVidia Geforce GTX 1070 8GB OC/O2|

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Guest 102301636

Todd,As Mats was saying draw fuel from the center tank first if you have more than 500kg/1000lbs of fuel in it but ensure that when you are re-fueling that you fill the wing tanks before putting anything in the center tank (although you should keep the min in the center tank at all times)Remember that 747 tradgedy when there was so little fuel in the center tank that the air conditioning unit (which is situated under the fuel tank in the 744 I think) got so hot that it heated the fuel to vapour unfortunately some electrical problem then sparked the vapour in the fuel tank...thats basically the reasoning behind it as well as keeping the fuel pumps immersed

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