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Disclaimer: I created this deck for my own personal study. It hasn't been QAd or approved by any airline, aircraft manufacturer, or regulatory agency. DYODD!

And have a nice day.

Fuel SD Symbology




What does it mean when the Fuel Pump icon is A) White, B) Green (vaned), C) Amber (Vaned, with the letter P nearby)?

A: Pump is commanded off


B: Pump's commanded on & operating normally


C: Pump's commanded on but has low pressure

FUEL 001




Vol 2, 12-20

Fuel SD Symbology




What does it mean when the Fuel XFD Valve symbol is A) White? B) Green?

White = XFD Valve closed (off)




Green = XFD Valve open (on)

FUEL 001




Vol 2, 12-20

Fuel SD Symbology




What does it mean when the Ballast Fuel total is A) Blank, B) Cyan, C) Amber

A) Ballast fuel entered in MCDU=0


B) MCDU entered value >0


C) FMS ballast fuel has changed after t/o

FUEL 001




Vol 2, 12-20

Fuel SD Symbology




What does the white number inside the engine symbol mean?

Fuel used in that engine

FUEL 001




Vol 2, 12-20

Fuel SD Symbology




What does it mean when the Start Pump icon is blank? Green?

Blank = Pump's off


Green = Pump's commanded on

FUEL 001




Vol 2, 12-20

Is the Fuel System Test a maintenance function only?

Yes

FUEL 001




Vol 2, 12-20

Fuel SD Symbology




Is total fuel weight only usable fuel, or does it include ballast?

Only usable fuel.

FUEL 001




Vol 2, 12-20

Do we ever enter ballast fuel (unusable fuel) into the MCDU?

NO- already incorporated into AWABS loading/performance calculations

FUEL 001




Vol 2, 12-20

What does the FUEL QTY A/B button do?

Selects alternate channel of the fuel quantity gauging system

FUEL 002




Vol 2, 12-20

When do we push the FUEL SYS TEST button?

Never- Mx function (it starts a fuel system test display on the FUEL SD)

FUEL 003




Vol 2, 12-20

What is the main function(s) of the START PUMP?

DC start pump, located in R Main Tank, provides fuel P for:


-APU start or engine start when AC power not available

FUEL 004




Vol 2, 12-20

What does FUEL USED RESET button do?

Resets fuel used digits on fuel synoptic

FUEL 005




Vol 2, 12-20

L/R Fuel tank qty.

9300 apiece

FUEL 006




Vol 2, 12-20

C Fuel Tank qty

6000

FUEL 006




Vol 2, 12-20

What's the total fuel tank capacity?

24,600 lbs

FUEL 006




Vol 2, 12-20

How many pumps per fuel tank

Per main: 2 AC boost pumps in parallel


Center: 2 identical pumps in series

FUEL 007




Vol 2, 12-20

What's the fuel feed priority (which tank generally feeds which engine, and when does the center tank override the wing tanks)?

Left Tank -> Left Engine


Right Tank -> Right Engine




Ctr Tank pumps produce higher pressure, so CTR Tank will feed both engines if there's fuel and they're on.

FUEL 007




Vol 2, 12-20

Why do we cycle excess warmed fuel thru the fuel system and return it to the inboard cooled corner of the main tanks?

Warms the fuel in the tank and retards wing ice formation due to cooled fuel

FUEL 008




Vol 2, 12-20

Why would the EEC inhibit Fuel Return to Tank flow?

Many reasons, including takeoff, landing, main tank fuel low, or high fuel temperature

FUEL 008




Vol 2, 12-20

How do we cross feed fuel &/or balance L&R fuel tank quantities?

The XFD Lever on the Pedestal opens the XFD valve. Then we turn off the boost pumps on the receiving side.

FUEL 009




Vol 2, 12-20

Where are the L/R Main fuel tanks vented to?

Center tank

FUEL 010




Vol 2, 12-20

Where is the C Fuel Tank vented to?

Wingtip vent boxes

FUEL 010




Vol 2, 12-20

How is APU supplied fuel?

Normally from right main tank; BUT if C tank contains fuel and its pumps are on, C tank will supply APU

FUEL 011




Vol 2, 12-20

APU fuel usage for ground ops:

350 lbs/hr

FUEL 012




Vol 2, 12-20