Citation Mustang – Fuel system - SmartCockpit - Airline training guides, Aviation, Operations, Safety

If the engine-driven fuel pump fails:

The engine flames out.

Right or left FUEL TRANSFER must be selected to obtain high-pressure motive flow from the opposite engine.

The transfer ejector pump also is inoperative.

The primary ejector pump also fails, but the boost pump energizes by low-pressure and sustains the engine.

Correct! Wrong!

What is the true statement?

With both FUEL BOOST pump switches on, fuel can be transferred.

All statements are correct.

The FUEL BOOST pump switches must be ON for engine start.

The fuel boost pump automatically energizes anytime the FUEL BOOST switches are in NORM and the START button is depressed, FUEL TRANSFER is selected, or low-pressure is sensed in the engine supply line.

Correct! Wrong!

The fuel transfer valve is in the left engine feed bay.

False.

True.

Correct! Wrong!

The fuel transfer valve is in the right engine feed bay. The valve is a direct-acting solenoid that requires normal DC power, to open and with a loss of DC power the valve fails in the closed position.

Minimum fuel temperature for JET A, JET A-1 is:

-45 deg.C (-49 deg.F).

-41 deg.C (-41 deg.F).

-38 deg.C (-37 deg.F).

-35 deg.C (-31 deg.F).

Correct! Wrong!

With the FUEL BOOST switches in the NORM position and fuel transfer is commanded by placing the FUEL TRANSFER selector knob to the LEFT position, what are the indications displayed:

FUEL TRANSFER and FUEL BOOST L (amber) CAS messages.

FUEL TRANSFER and FUEL BOOST R CAS messages.

FUEL TRANSFER and FUEL BOOST L CAS messages.

Only a FUEL TRANSFER CAS message.

Correct! Wrong!

With the "FUEL FLTR BP L" message in the CAS window displayed, the best answer would be to:

Transfer fuel to the effected engine.

Land as soon as practical.

Primary Ejector pump - AUX.

Auxiliary Ejector pump - STANDBY.

Correct! Wrong!

The "FUEL BOOST L CAS" message indicates that:

The engine-driven high-pressure pump is not operating or has failed.

The left fuel boost pump is automatically operating because of low fuel pressure.

The primary ejector pump is operating.

The left fuel boost pump is operating because the fuel boost switch was placed to the ON position.

Correct! Wrong!

The emergency asymmetric fuel differential is:

600 pounds.

200 pounds.

1,000 pounds.

400 pounds.

Correct! Wrong!

With the message "FUEL LO INOP L" in the CAS window:

The fuel quantity is 170 pounds or less.

The fuel quantity signal conditioner is unable to determine the fuel low level.

The primary check valve has failed.

The left boost pump has failed.

Correct! Wrong!

The FUEL TRANSFER selector knob has three positions; L TANK, OFF, and R TANK. When the selector is placed in the L TANK or R TANK position, it energizes the fuel transfer valve open and (with the boost pump switches in NORM) energizes the fuel boost pump on the supply side.

True.

False.

Correct! Wrong!

The fuel system has a capacitance probe quantity indication system that compensates for changes in density caused by temperature variations.

False.

True.

Correct! Wrong!

Firewall shutoff valves for each engine are in the respective aft wing fairing (between the wing and fuselage). In the event of a fire, the valve shuts off fuel flow to the respective engine on pilot command. The valve can be commanded closed by the _____ in the event the normal shutdown valve fails.

Standby shutoff valve that is common to both engines.

PSEU valve.

FADEC.

Standby shutoff valve that is available for each engine.

Correct! Wrong!

The fuel temperature probe is inside the right engine feed bay.

True.

False.

Correct! Wrong!

The fuel temperature probe is inside the left engine feed bay. The fuel temperature appears at the bottom of the fuel display window as green digits in Celsius.

The flight crew shall refuel the aircraft in areas that permit the free movement of fire equipment. There is one approved grounding point under the outboard end of the right wing.

False.

True.

Correct! Wrong!

There is one approved grounding point under the outboard end of each wing

One 28 VDC boost pump is in each engine feed bay. Either boost pump can be controlled automatically or manually. Circuit protection for the boost pumps is in the aft J-box.

False.

True.

Correct! Wrong!

Operation of the primary ejector pump directly depends upon:

AC electrical power supplied by the No. 1 or No. 2 inverter.

DC electrical power.

High-pressure fuel from the engine-driven fuel pump (motive flow).

Flow from the transfer ejector pump.

Correct! Wrong!

Minimum fuel quantity for takeoff is:

180 lbs per wing.

260 lbs per wing.

240 lbs per wing.

200 lbs. per wing.

Correct! Wrong!

To verify that fuel transfer occurs, it is necessary to:

Monitor the fuel quantity indicators for appropriate quantity changes.

Ensure that the FUEL BOOST pump switch for the tank being fed illuminates.

Observe that only the white FUEL TRANSFER annunciator illuminates.

Ensure that both white FUEL BOOST ON annunciators illuminate.

Correct! Wrong!

When the fuel level is low, the valve:

Closes to avoid direct connection to the vent surge tank.

Opens to provide venting.

Closes to avoid venting.

Opens to connect to the vent surge tank.

Correct! Wrong!

When does the "FUEL TRANSFER" message display in the CAS window?

During fuel transfer operations.

When the primary ejector flow control valve is open.

When the "FUEL LVL LO" message is displayed in the CAS window.

When the primary flapper valves are open.

Correct! Wrong!

After engine start, the fuel boost pump is deenergized by:

Discontinuing fuel transfer.

A time-delay relay.

The FUEL BOOST pump switch.

Start circuit termination.

Correct! Wrong!

Fuel is transferred at a rate of approximately:

10 US gallons/hour.

40 pounds/hour.

10 pounds/minute.

50 pounds/minute.

Correct! Wrong!

As the fuel level decreases a flapper valve permits fuel to drain from the surge tank back into the main tank. If the vent surge tank fills, another vent allows spillage overboard through the NACA scoop.

False.

True.

Correct! Wrong!

The NACA scoop does not require anti-icing.

If the "F/W SHUTOFF R" message in the CAS window posts when the throttle is moved to CUTOFF, this indicates that:

The transfer valve is closed.

The electric boost pump is inoperative.

The primary ejector pump is inoperative.

A malfunction of the normal shutdown system has occurred.

Correct! Wrong!

Citation Mustang – Fuel system