787 SYS 4 Fuel

Question 1

Fuel capacity:
L/R Main
Center
Total

Answer 1

-L/R Main - 37K
—(-8 little more/ -9/10 little less)
Center - 149K
—(-8 little less/-9/10 little more)
Total - 223.5K
—(-8 little less/-9/10 little more)

Question 2

What are the two center tank fuel pumps called and what is significant about the name

Answer 2

-Override/Jettison pumps
-the operate at higher output so center is used first

Question 3

Which tanks can fuel be jettisoned from

Answer 3

All

Question 4

What does a flashing amber arrow indicate

Answer 4

Fuel Balancing or Crossfeed is going the wrong way

Question 5

What does this indicate; what EICAS will be displayed

Answer 5

-Fuel Imbalance >200lbs and xfeed is open or balance system is on
-NO EICAS for white arrow

Question 6

What does this indicate; what EICAS will be displayed

Answer 6

-Fuel Imbalance >200lbs and xfeed is open or balance system is on
-EICAS FUEL IMBALANCE is displayed

Question 7

How long can it take for fuel balance to activate after pushing BALANCE switch

Answer 7

-up to 30 seconds

Question 8

When do the center tank scavenge pumps begin transfer

Answer 8

-Either MAIN tank <35K
-CENTER tank pumps OFF
-Inhibited if engine is on suction feed

Question 9

What is the minimum fuel remaining in the MAIN tanks you can jettison to

Answer 9

8,700 lbs each side

Question 10

After automatic jettison do the valves automatically close

Answer 10

No.

Question 11

What are the fuel dump rates during auto jettison

Answer 11

No center fuel: 1250 ppm
Fuel in Center tank: 3000 ppm