Jump to content

Archived

This topic is now archived and is closed to further replies.

FS737Pilot

Turning center tanks off for takeoff

Recommended Posts

I just read this in the Operating Manual Volume 1 under normal procedures:

 

"Check the center tank fuel quantity. Both center tank fuel pump switches must be OFF for takeoff if center tank fuel is less than 5000 pounds/2300 kilograms."

 

I've never done this, because I didn't realize you were supposed to. Whats the reason for this and did anyone else overlook this as I did?

 

Would you taxi out with the center pumps on or would you turn them on after takeoff. Honestly I've never heard of this procedure in the real world either, but I assume they do it.


Mitch Brown

Private Pilot | Aerospace Engineering Major

Share this post


Link to post
Share on other sites

I've always done this (However I am a rare one who read the entire manual), it's related to cooling and lubricating of the pumps from memory, on takeoff wiith high angles of pitch the fuel can expose the center pumps to surging and overheating.

 

Yes you can have them on during taxi and after take off/large pitch above 1000lbs/450kilos (I do) but I am not sure what airlines SOP do.


Jay Vorkapic

 

pmdg_trijet.jpg

Share this post


Link to post
Share on other sites

More than 1000, less than 5000lbs: On for push/start, off after start, back on at 250knots.

 

 


Matt Cee

Share this post


Link to post
Share on other sites

  • Tom Allensworth,
    Founder of AVSIM Online


  • Flight Simulation's Premier Resource!

    AVSIM is a free service to the flight simulation community. AVSIM is staffed completely by volunteers and all funds donated to AVSIM go directly back to supporting the community. Your donation here helps to pay our bandwidth costs, emergency funding, and other general costs that crop up from time to time. Thank you for your support!

    Click here for more information and to see all donations year to date.
  • Donation Goals

    AVSIM's 2020 Fundraising Goal

    Donate to our annual general fundraising goal. This donation keeps our doors open and providing you service 24 x 7 x 365. Your donation here helps to pay our bandwidth costs, emergency funding, and other general costs that crop up from time to time. We reset this goal every new year for the following year's goal.


    18%
    $4,540.00 of $25,000.00 Donate Now
×
×
  • Create New...