MD-11 Fuel System

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Answer

Total Fuel Quantity

258,000#

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Fuel by tank

Wing 41, Main 65, UAux 87, LAux 11, Tail 13

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Stab trim set to this to aid in tail fueling

3 degrees nose up

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Temp probes are in these tanks

3 and Tail

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Quantity Test occurs when (2 times)

AC Power application or closing of Refueling Panel door

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In Manual, pushing a pump switch turns on

All pumps in that tank

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Aft pumps for each tank come on automatically when

Pulling start switch out on start

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Aft 6 Boost Pumps are all

Super pumps (jet pumps)

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Forward pumps are auto on during

T/O, Descent, landing

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#2 Left Aft Boost Pump and Tail Tank Alt Pump powered by

REAC

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Engines that can suction feed

1 and 2

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Foot reduces speed to __ when tip tanks are ___% full

320 KIAS, 60%

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Aux Fill Isolation Valve is always __ when FSC is in Manual

CLOSED

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Manifold Drain

With low fuel opens and drains into #2 tank

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Lower Aux Pumps

Time out so UA pumps stay on by themselves

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Lower Aux and Tail Tanks must be __ for takeoff and land

OFF

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MTGW for H and L modes

630.5 and 625.5

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Ground Fuel Scheduling applied when

>9000# in UA or >156K#

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2 Reasons to be restricted to "L" mode

Ballast fuel anywhere MEL requires it

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GFS in auto begins when

Refueling Door Closed and AC pwr

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Where to look for "H" mode

Wt/Bal, Pat Config page, FP/R

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Tail Fuel MGT aims for CG

2% FWD of Max AFT limit

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Min fuel to start TFM

60K

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No more fuel transferred aft at

51K

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Tail fuel "metered" FWD at

11.5K

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Tail fuel sent forward

FL270

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Fuel is trapped in tail when

Below FL180 and Configured

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For TFM to work with ballast in UA, you must have

2000# of usable fuel in UA tank

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FSC in MAN without TFM results in a penalty of

2.7%

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FP/R plans fuel burn with CG of

25.0

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Requirements for TFM

FSC-AUTO 60K total fuel at start No Tail Tank Ballast

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TFM begins when

Slats Retract

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TFM Terminates for

Inop Hardware, Inop Data, Cold fuel recirc unsuccessful

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Wing Cold Fuel Circ #s

6 Deg start, until 5 deg warmer or 15 minutes, 3 deg of freeze FUEL TEMP LO

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Tail Cold Fuel Circ #s

8 Deg recirc in tank 5 Deg 1/3 swapped with another tank 3 deg of freeze FUEL TEMP LO & TAIL FUEL FWD

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Tail Ballast requires

All fuel in tail unusable, pull pump CBs

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Fuel dump rate

5000 ppm

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First push of fuel dump switch

FMS Dump To GW (default 481.5)

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Second push of fuel dump switch

Stops Dump

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Third push of fuel dump switch

Dumps to fuel low level shutoffs 11/12/11 34,000# approx

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Ballast fuel is protected in ___ mode only

AUTO

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FOM Min Fuel Over Destination

15K

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FOM Max Diff between FP/R TO fuel and actual TO fuel

10K

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FOM Max Diff between W&B Fuel and FOB

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FOM Max Diff between single tank and FSF and actual

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Max Diff between Total FSF and Actual Fuel

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Must declare Emergency fuel when you will land with

11K

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Created by: cakorps