1. All signals for the fuel quantity system is processed for the central display unit CDU and the refuel panel P15 through? a. A Fuel summation unit on the E3 rack. b. A fuel quantity processor unit in the forward electronics bay c. A fuel tank tantalizer unit attached to the front spar on each wing.
2. Placing the 3-way switch on the P15 fuelling panel to Test Gauges position will?
a. Test both the P2 and the P15 panels b. Only test the P15 fuelling panel gauges c. Will only test the gauges on the Control Display Unit in the flight deck.
3. The engine fuel feed spar valve is powered by? a. 28vDC from the DC battery bus. b. 28vDC from the hot battery bus only. c. 28vDC from the hot battery bus and a 28vDC battery as a backup.
4. The function of the fuel vent system is? a. To keep the pressure in the tank at or near ambient so as to prevent damage to the wing structure b. To keep the pressure in the tank well above ambient pressure to increase the structural strength of the wing. c. To exhaust the fuel vapours.
5. How many fuel measuring sticks are installed per wing tank and in the centre tank? a. There are 6 measuring sticks per wing tank and 4 in the centre tank b. There are 4measuring sticks per wing tank and 4 in the centre tank c. There are 2 inboard and outboard sticks per wing tank and 1 in the centre tank.
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6. Without the use of fuel boost pumps which fuel tank, by suction feed, normally supplies fuel to the APU (Auxiliary Power Unit)? a. The centre tank b. The #2 tank c. The #1 tank.
7. If during refuelling both wing tanks are overfilled what indication would you expect to see? a. Both the fuel panel gauges on the P15 and P2 panels will flash b. Only the P15 fuel panel gauge will flash at 1 second intervals c. Fuel levels in the centre tank will begin to increase as the excess fuel overflows into it.
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8. What 2 switches in the flight-deck control the engine fuel spar valve? a. The engine start switch and the engine start lever. b. The engine start lever and the engine fire handle c. The engine start lever and the relevant boost pump switch.
If the ships battery power fails to operate the spar shutoff valve fails, the relay will source its power from: A battery located behind the P6 panel The emergency DC Bus The ground service bus.
The position of the booster pumps are as follows. Underneath the wing All in the front spar area Centre tank pumps fitted in the wheel well area, aft wing pumps in the rear spar and forward wing pumps in the front spar of the wings.
Placing the 3 way switch on the P15 panel to test gauges position will Test both gauges on the P2 and P15.panels Only test the gauges on the P15 panel Only test the gauges on the control display unit (C.D.U.)
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On the following fuel system items, which one is operated by manual means only Fueling valve Defuel valve Cross feed valve.
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Fuel Quantity displayed on the on the upper Display Unit is received from ) Directly from the fuel tank units in each Fuel Tank ) From the Fuel Quantity Processing unit From repeater Gauges on the p15 panel .
When the main tanks are filled to capacity with fuel the following will happen: The float switch will interrupt power to the fuelling shutoff valve The capacitors in the fuel tanks will send a signal to the fuel quantity system to shut off the valves Fuel will overflow from the vent ports, unless extreme caution is observed.
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What condition is centre tank causes the master caution lights to illuminate? Any boost pump low pressure light illuminates Both centre tank boost pump low pressure lights illuminated Centre tank empty of fuel and both boost pump switches are "off".
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. The booster pumps are output / rated as follows All have the same output / rating, they are all functionally interchangeable The centre tank booster pumps have a higher output/rating than the main tank Booster Pumps and are not interchangeable The main tank Booster pumps are physically interchangeable with the main tank Pumps, however the part number of the of the Pumps should be checked to ensure the correct output rating.
The procedure, when fitting a cross feed valve includes Adjusting the actuator adaptor plate to align the actuator No adjustment is necessary, just fit The rigging of the motor to the butterfly.
All signals for the fuel quantity system are processed for the central display unit & refuel panel P15 through A fuel summation unit in E3 A Fuel quantity processor unit in forward electronics bay ) A fuel tantalizer unit in the front spar.
The purpose of the fuel tank baffle check valves is as follows To ensure a positive flow of fuel to the booster pumps during aircraft manoeuvres and to minimize large fuel displacements To ensure that the fuel is evenly distributed during fuelling To prevent spill of fuel out the vent when banking aircraft.
The airplane can be pressure refuelled from the fuelling station External power connected to the aircraft but not on electrical system buses or main battery switch turned on ) With no electrical power available With no electrical power available once the refuel panel door is latched open.
A pressure switch for each fuel tank boost pump monitors Pressure differential Pump inlet pressure Pump outlet pressure.
The refuel valves may be manually operated by a Removing the actuator and wrenching the valve open Pushing a plunger on the valve itself. Moving a lever on the valve.
The fuel crossfeed valve Connects the fuel feed line to the Refuel manifold Connects the left and right engine supply lines Connects the wing tanks to the centre tank.
The fuel crossfeed valve: Is normally open b Is normally closed c Is automatically opened when low level is detected in a wing tank.
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During Manual Refuelling the fuel supply to each tank is controlled Manually By the FQIS By the FQPU.
The pressure relief valve in the wing tank fuel vent system prevents damage to the wing structure when there is a) Too much positive or negative pressure difference between the tanks and the ambient. b) Too much negative pressure difference between the tanks and the ambient c) Too much positive pressure difference between the tanks and the ambient.
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The centre tank fuel scavenge system uses A The left forward boost pump which supplies motive flow to a jet pump The left aft boost pump which supplies motive flow to a jet pump The Centre tank boost pumps.
The refuelling shutoff valve goes to the open position when You put the control switch to the OPEN position You put the control switch to the OPEN position and fuel pressure is applied The door of the refuelling station is opened.
The indicators at the refuelling panel have a tank overfill indication, if the quantity is more than the rated capacity of that tank. a) There is no overfilling indication b) The fuel quantity indication flashes on and off at a one second intervals and the flight compartment fuel quantity indication flashes c) The fuel quantity indication flashes on and off at a one second intervals, and the flight compartment fuel quantity indication does not flash.
The auto shutoff relay energizes when there is low boost pump pressure in the centre tank after a time delay a) Of 15 seconds b) Of 120 seconds c) Of 5 seconds.
A LOW PRESSURE light comes on when a centre tank boost pump switch is in the ON position and the pump pressure is a) Less than 22 psig b) Less than 6 psig c) Less than 8 psig.
A LOW PRESSURE light comes on when a main tank boost pump pressure is less than a) Less than 6 psig b) Less than 22 psig c) Less than 8 psig.
The engines can get fuel by suction through the suction bypass valve from a) Tank 1 only b) Centre, 1 and 2 tanks c) Tanks 1 and 2 only.
The defueling valve connects the right engine fuel feed manifold with a) The defuel manifold b) The left engine fuel feed manifold c) The crossfeed manifold.
If the power to operate the spar shutoff valve fails, the relay will source its power from A battery located behind the P6 panel The emergency DC Bus. The ground service bus.
The cross feed valve actuator & the engine fuel spar valve actuators are All interchangeable ) Not interchangeable Left handed & right handed.
Fuel configuration messages LOW shows that a) Main tank 1 or 2 has less than 2000 lb. (907 kg) of fuel b) Centre tank has less than 2000 lb. (907 kg) of fuel. c) Main tank 1 and 2 and centre has less than 2000 lb. (907 kg) of fuel.
When there is no electrical power to the fuel temperature indicator. a) The pointer goes off scale at the negative side b) The pointer goes off scale at the positive side. c) The pointer stays in its last position.
There are two inclinometers, one for airplane pitch, one for airplane roll located. a) In the main landing gear wheel well b) In the nose landing gear wheel well. c) At the P15 refuelling station. .
What Indications are available for the DE-FUEL Valve position? Blue Light Amber Light No indication.
When is the Refuelling Panel P15 powered? When the A.P.U. is started. Always Powered. When you open the Fuel Servicing Door. .
The centre tank is located between. a) Rib 5 on the left wing and Rib 5 on the right wing b) Rib 1 on the left wing and Rib1 on the right wing c) Rib 2 on the left wing and Rib 2 on the right wing.
Impact resistant fuel tank access panels are, a) The three inboard fuel tank access panels on each wing b) The five inboard fuel tank access panels on each wing c) The two inboard fuel tank access panels on each wing.
The refuelling valve position open blue light when illuminated indicates that: a) There is power to the refuelling valve solenoid only b) There is power to the refuelling valve solenoid, and fuel pressure is available c) The valve is manually operated.
When the fuel crossfeed valve position and fuel crossfeed valve switch position
have a disagreement.
a) The crossfeed VALVE OPEN light is on bright b) The crossfeed VALVE OPEN light is on dim. c) The crossfeed VALVE OPEN light is flashing.
When the engine fuel spar valve position and engine start lever position have a
disagreement.
a) The SPAR VALVE CLOSED light is on bright b) The SPAR VALVE CLOSED light is on dim. c) The SPAR VALVE CLOSED light goes off.
Fuel temperature shown on the fuel control panel (P5) is from a temperature sensor located. a) In tank 1 b) In tank 2 c) In tank 1, 2 and centre.
The centre tank fuel scavenge system jet pump is provided with motive flow by. a) The left forward boost pump b) The left aft boost pump c) The centre tank left boost pump.
which statement is correct for fuel configuration messages? Imbalance message has higher priority over a low fuel message low message has a higher priority over an imbalance message . CDS will display all messages as they occur. .
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