Fuel System Flashcards
(21 cards)
Which of the following can be used in the Bell 212? A. Jet A (JP 5) B. Jet B (JP 4) C. Aviation gas D. All the above
D. All the above
Jet A (JP 5) Jet B (JP 4) Aviation gas
How many fuel cells are in the airframe fuel system? A. 2 B. 3 C. 4 D. 5
D. 5
What is the usable fuel capacity of a Bell 212 without auxiliary tanks? A. 211 U.S. gallons B. 217 U.S. gallons C. 295 U.S. gallons D. 377 U.S. gallons
B. 217 U.S. gallons
How does fuel consumption affect helicopter center of gravity? A. The helicopter CG is not affected. B. The CG moves forward continuously. C. The CG moves forward and then aft. D. The CG moves aft and then forward.
C. The CG moves forward and then aft.
Which of the following airframe fuel system components is located in the lower fuel cells? A. Fuel boost pump B. Fuel ejector pump C. Fuel flow switch D. All the above
D. All the above
Fuel boost pump
Fuel ejector pump
Fuel flow switch
Which device actuates the illumination of the FUEL BOOST caution panel light if a fuel boost pump fails? A. The fuel flow switch B. The fuel float switch C. The fuel pressure transmitter D. The fuel boost failure switch
A. The fuel flow switch
What is the purpose of the ejector pumps?
A. To pressurize boost pump fuel and send it to the engines
B. To transfer fuel from the upper cells to the lower cells
C. To scavenge fuel from the forward end of the lower cells
D. To scavenge fuel from the outboard upper fuel cells
C. To scavenge fuel from the forward end of the lower cells
Which of the following malfunctions causes illumination of a FUEL BOOST caution panel light? A. Failure of a boost pump B. Blockage of a flow switch C. Blockage of an ejector pump D. Any of the above
D. Any of the above
Failure of a boost pump
Blockage of a flow switch
Blockage of an ejector pump
What condition activates the fuel float switches and illuminates the FUEL LOW caution panel light?
A. 50 pounds remaining in the respective lower fuel cell
B. 50 pounds remaining in both lower fuel cells
C. Ten minutes fuel at cruise power in the associated cell
D. All the fuel being drained from the upper fuel cells
A. 50 pounds remaining in the respective lower fuel cell
What is the recommended pilot action if a FUEL LOW caution panel light illuminates in flight?
A. Position the FUEL XFEED switch to OVRD CLOSE.
B. Position the FUEL XFEED switch to OPEN.
C. Position the RESERVE FUEL switch to OPEN.
D. Position the fuel INTCON switch to OPEN.
D. Position the fuel INTCON switch to OPEN.
To electrically operate the fuel sump drain valves, which electrical and fuel system switches must be used?
A. A generator switch on and the appropriate boost pump switch on
B. A battery bus switch on and the appropriate fuel switch on
C. A battery bus switch on and the appropriate fuel switch off
D. A generator switch on and the appropriate boost pump switch off
C. A battery bus switch on and the appropriate fuel switch off
What is the purpose of the fuel interconnect valves?
A. To separate the two independent fuel systems
B. To access lower cell fuel if a boost pump fails
C. To equalize lower cell fuel if one cell’s fuel becomes low
D. All the above
D. All the above
To separate the two independent fuel systems
To access lower cell fuel if a boost pump fails
To equalize lower cell fuel if one cell’s fuel becomes low
After the pilot has moved the fuel switch to ON, the FUEL VALVE caution panel light illuminates momentarily and then extinguishes. What does this indicate?
A. The fuel valve has moved to the full open position.
B. The fuel valve and the fuel switch are in agreement.
C. The fuel valve has failed to open properly.
D. Both A and B
D. Both A and B
The fuel valve has moved to the full open position.
The fuel valve and the fuel switch are in agreement.
What other airframe system also has control over each engine’s fuel valve?
A. The respective engine fuel GOV switch
B. The respective PART SEP switch
C. The respective FIRE PULL handle
D. The respective auxiliary tank FUEL TRANSFER switch
C. The respective FIRE PULL handle
Where is fuel pressure sensed? A. Before the fuel valve B. After the fuel valve C. In the fuel boost pump D. In the flow switch
B. After the fuel valve
Which of the following causes the crossfeed valve to open?
A. A boost pump failure sensed by the crossfeed valve
B. A boost pump failure sensed by the associated flow switch
C. Low fuel sensed by the associated fuel float switch
D. Only the pilot can actuate the crossfeed valve.
B. A boost pump failure sensed by the associated flow switch
What is the purpose of the FUEL XFEED TEST switch?
A. To test emergency bus operation of the cross-feed valve
B. To check automatic closing of the fuel cross-feed valve
C. To test fuel cross feed valve operation on both essential buses
D. To check fuel cross feed valve operation on all DC buses.
C. To test fuel cross feed valve operation on both essential buses
What does a fuel pressure gage reading 4 to 6 psi below normal pressure indicate during the fuel crossfeed valve check?
A. A malfunctioning check valve in the boost pump output line
B. One of the fuel crossfeed valves has not fully opened.
C. The fuel boost pump is not putting out sufficient pressure
D. One of the fuel interconnect valves is partially closed.
A. A malfunctioning check valve in the boost pump output line
What is the result of a complete loss of AC electrical power to the fuel quantity system?
A. No effect
B. The fuel quantity gage sticks at its last position.
C. The fuel quantity selector switch is inoperative.
D. Both B and C
D. Both B and C
The fuel quantity gage sticks at its last position.
The fuel quantity selector switch is inoperative.
What is the cockpit indication of a boost pump failure if all fuel system switches are in the normal in-flight positions?
A. Illumination of the respective FUEL BOOST caution panel light
B. A FUEL BOOST caution light and no indicated fuel pressure
C. Engine failure if above 5,000 feet pressure altitude
D. All the above
A. Illumination of the respective FUEL BOOST caution panel light
How may an indicated boost pump failure be verified after the helicopter is safely on the ground?
A. Close the fuel valve, and check fuel pressure.
B. Close the crossfeed valve, and check fuel pressure.
C. Close the interconnect valve, and check fuel pressure.
D. Open the crossfeed valve, and check fuel pressure.
B. Close the crossfeed valve, and check fuel pressure.
