PPRuNe Forums - View Single Post - Tank-to-engine AMC requirement
View Single Post
Old 5th July 2021 | 08:03
  #2 (permalink)  
eckhard
20 Anniversary
 
Joined: May 2005
Posts: 1,198
Likes: 32
From: France
On the 747-400:

Fuel load more than approx 120T: The Centre Tank feeds the outboard engines during take-off (and landing!)* and the inboard engines feed from their respective wing tanks.
*Any time the flaps are extended. (Wings hold about 110T but there might be a restriction on Centre Pump usage with low fuel levels in the Centre Tank.)

Fuel load 53T to 120T: All engines feed from the inboard wing tanks during take-off and landing.

Fuel load less than 53T: Each engine feeds from its respective wing tank during take-off and landing.

Also, as far as I remember, there was no prohibition on crossfeeding fuel during take-off and landing, if it was required.

So, to answer your question; I don't think your instructor is correct for "all aircraft".
eckhard is offline  
Reply