Go Back  PPRuNe Forums > Flight Deck Forums > Tech Log
Reload this Page >

Fuel temperature limits when jp4 and jet b fuel are used

Wikiposts
Search
Tech Log The very best in practical technical discussion on the web

Fuel temperature limits when jp4 and jet b fuel are used

Thread Tools
 
Search this Thread
 
Old 21st Jul 2019, 14:09
  #1 (permalink)  
Thread Starter
 
Join Date: Feb 2005
Location: Japan
Posts: 326
Likes: 0
Received 0 Likes on 0 Posts
Fuel temperature limits when jp4 and jet b fuel are used

In the Airbus 320 FCOM in the limitations chapter it says:

"If the Wing Fuel Temperature exceeds 30ºC at engine start, the altitude must be limited to 35000ft, until center tank is empty “. As it is in the tittle WHEN JP4 and JET B FUELS are used.

My question is: If the center tanks are already empty before take-off with FL should you climb? Is the OPTIMUM, or limit to FL350, until the fuel cools down? What is recommended?
trancada is offline  
Old 21st Jul 2019, 14:26
  #2 (permalink)  
 
Join Date: Mar 2012
Location: Having a margarita on the beach
Posts: 2,427
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by trancada
In the Airbus 320 FCOM in the limitations chapter it says:

"If the Wing Fuel Temperature exceeds 30ºC at engine start, the altitude must be limited to 35000ft, until center tank is empty “. As it is in the tittle WHEN JP4 and JET B FUELS are used.

My question is: If the center tanks are already empty before take-off with FL should you climb? Is the OPTIMUM, or limit to FL350, until the fuel cools down? What is recommended?
Reason : At high altitude with high fuel temperature, the pressure supplied by the center tank pumps becomes lower than the pressure supplied by the wing tank pumps.
You basically want to make sure you burn fuel from the center tank first and then from the wing tanks. If there is no fuel in the center tanks, happy days.
The limitation applies to the A320s with the "classic" fuel system.

sonicbum is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.