Originally Posted by
Intruder
In the 747 specifically, a high pitch attitude at low FQ is NOT a good situation, since the forward boost pumps will cavitate. There is an FCOM warning regarding go-arounds with FQ <900 Kg in a tank.
This happens quite frequently during initial climb with full climb thrust at light weights(for flights of 1.5 hours or less). During the climb, forward pumps cavitate with associated EICAS messages. And this is with quite a bit more than 900 Kg in those fuel tanks.