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Boeing 787 RR > Engine (control, Indication, Oil...) > Flashcards

Engine (control, Indication, Oil...) Flashcards

1
Q

Where does the P20-T20 probe senses pressure and temperature?

Engine inlet

Intermediate pressure compressor inlet

High pressure compressor inlet

A

ENGINE INLET

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2
Q

During engine run test, the EEC ALT light comes on. What engine parameter cannot be calculated by the EEC?

Engine N2 speed

N1 reference

Turbofan power ratio (TPR)

A

TURBOFAN POWER RATIO

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3
Q

Which is the component that uses the full authority digital engine control (FADEC) from of control to provide all the functions needed to start, run and shutdown the engine?

Engine Monitoring Unit (EMU)

Engine Electronic Controller (EEC)

Hydro-Mechanical Unit (HMU)

A

ENGINE ELECTRONIC CONTROLLER (EEC)

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4
Q

Where is the location of the auto throttle servo motors?

In the thrust control module (TCM)

In the forward EE compartment

Under the flight deck floor

A

IN THE THRUST CONTROL MODULE (TCM)

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5
Q

The emergency shutdown system shuts down the engine for a break in which shaft?

Stand Aisle Gearbox (SAGB)

N3

N1 or N2

A

N1 OR N2

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6
Q

Where does the oil quantity transmitter sends data directly to…?

The Main Engine Data Concentrator (MEDC)

The Engine Electronic Controller (EEC)

The Engine Monitoring Unit (EMU)

A

THE MAIN ENGINE DATA CONCENTRATOR

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7
Q

What occurs if the oil debris sensor detects ferrous metal particles in the engine scavenge oil system?

The sensor sends a signal to the oil debris sensing system signal conditioner

The engine monitoring unit (EMU) sends a report to the engine health monitoring system

The scavenge system filter bypass opens to let oil flow

A

The sensor sends a signal to the oil debris sensing system signal conditioner

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8
Q

During engine start the variable frequency starter generators (VFSG) turn the gearbox that turns what rotor, or rotors?

N2 rotor

M3 rotor

N2 and N3 rotors

A

N2 rotors

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9
Q

Which component provides a secondary mechanical lock of the thrust reverser (T/R) when they are stowed?

Track lock mechanism in the right thrust reverser upper hinge beam area of each engine strut

Thrust reverser hydraulic actuator

Isolation valve when de-energized

A

Track lock mechanism in the right thrust reverser upper hinge beam area of each engine strut

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10
Q

Where can you locate the thrust reverser (T/R) translating sleeve deactivation pins?

In the C-duct latch panel at the 6:00 position of the thrust reversers

In the fan cowl

At the thrust reverser torque box

A

In the C-duct latch panel at the 6:00 position of the thrust reversers

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11
Q

Which component make sure the actuators on both thrust reverser sleeves get the same amount of fluid?

T pieces

Hydraulic isolators

Hydraulic compensators

A

T pieces

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12
Q

Which indication will show on EICAS when the thrust reverser is deployed more than 90%?

Amber REV

Magenta REV

Green REV

A

Green REV

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13
Q

Which compressor has a variable inlet guide vanes (VIGV) and variable stator vanes (VSV)?

The high pressure (HP) compressor (N3)

The low pressure (LP) compressor (N1)

The intermediate pressure (IP) compressor (N2)

A

The intermediate pressure (IP) compressor (N2)

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14
Q

How is fuel removed from the drains collector tank?

The drains collector tank uses gravity to send the fuel to the inlet of the engine fuel pump
The drain collector tank spills the fuel into the ground after the engine shuts down
The drains tank ejector pulls fuel out of the collector tank and sends it to the inlet of the engine fuel pump

A

The drains tank ejector pulls fuel out of the collector tank and sends it to the inlet of the engine fuel pump

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15
Q

Before you open a thrust reverser cowl, wich of these must your first deactivate?

Wing leading edge slats

Center hydraulic system

Wing trailing edge flaps

A

Wing leading edge slats

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16
Q

Where is the centrifugal breather installed on the TRENT 1000 engine?

External gearbox

Oil tank and scavenge filter housing

Intermediate gearbox

A

External gearbox

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17
Q

Where are the fan blade moment weight located?

On the blade root

On the blade pressure side

On the blade suction side

A

On the blade root

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18
Q

What fills the space between the blades in the low pressure compressor?

Annulus fillers

Spinner fairing

Support ring

A

Annulus fillers

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19
Q

What is the probable cause of the fuel flow indication going blank on EICAS?

Main engine data concentrator (MEDC)

Hydro-Mechanical unit (HMU)

Fuel flow meter

A

Fuel flow meter

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20
Q

Which component calculates engine vibration and supplies engine data reports?

Engine monitoring unit (EMU)

Central maintenance computer function (CMCF)

Engine electronic controller (EEC)

A

Engine monitoring unit (EMU)

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21
Q

What does the engine electronic controller (EEC) use turbine gas temperature (TGT) for?

Calculate engine thrust and fuel flow

Calculate engine balancing

Do health monitoring

A

Calculate engine thrust and fuel flow

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22
Q

What air source does low pressure turbine case cooling use?

HP3

IP3

Bypass Air

A

Bypass air

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23
Q

What is the purpose of the engine secondary air system (SAS) valve?

It supplies HP3 air to the bearing compartments at high power settings

It opens to supplement IP8 air with HP3 air for turbine cooling and bearing pressurization at low power settings

It closes at high power to prevent IP8 air from over pressurizing the turbine case cooling system

A

It opens to supplement IP8 air with HP3 air for turbine cooling and bearing pressurization at low power settings

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24
Q

During an engine start on the ground, the engine electronic controller (EEC) sends a signal to the one igniter to operate. If the first start of the engine is a failure, where does the EEC send the signal for the second start?

The same igniter only

Both igniters

The other igniter only

A

Both igniters

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25
Q

During an engine change, you install the bootstrap equipment to move down the engine. What must you monitor to prevent more than the maximum load on the bootstrap equipment?

Angle of the hoist chains

Pitch and roll of the engine

Load cells at the hoist locations

A

Load cells at the hoist locations

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26
Q

Wich of these is the maximum tail wind allowed during a ground engine run?

10 knots

0 knots

5 knots

A

5 knots

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27
Q

Wich of these must you do before you open a fan cowl?

Open the thrust reversers

Release tension latches at the 6:00 position

Remove the fasteners on the inlet cowl

A

Release tension latches at the 6:00 position

28
Q

The power doors opening system (PDOS) has a malfunction. How do you open the thrust reverser (TR) cowls?

Put lift truck forks under the cowl and raise the TR.

Use a external electric drive motor connected to the PDOS pump

Use an external hydraulic hand pump connected to the TR cowl actuator quick disconnect fitting

A

Use an external hydraulic hand pump connected to the TR cowl actuator quick disconnect fitting

29
Q

Where do you insert the IP turning tool to manually rotate the intermediate pressure (IP) shaft?

Into the external gearbox breather housing

Into the intermediate (STEP ASIDE) gearbox

Through the fan to engage the IP compressor blades

A

Into the external gearbox breather housing

30
Q

On wich compressor are the variable stator vanes installed?

Intermediate pressure

Low pressure

High pressure

A

Intermediate pressure

31
Q

What does the engine permanent magnet alternator (PMA) provide power to?

Primary power to the engine electronic controller (EEC)

Primary power to the main engine data concentrator (MEDC)

Backup power to the EEC

A

Primary power to the engine electronic controller (EEC)

32
Q

Fuel leaks from the left engine DRAINS TNK/OIL TNK drain mast port after shutdown, what is most probable cause?

Pressure raising shutoff valve (PRSOV) does not operate

Fuel return-to-tank valve does not operate

Drain collector tank jet pump has a blockage

A

Drain collector tank jet pump has a blockage

33
Q

Why does fuel stay in the fuel manifold during an in-flight engine shutdown?

For use by other fuel-driven systems

For the next in-flight start attempt

For use by the fuel/oil heat exchanger

A

For the next in-flight start attempt

34
Q

Wich of these is used by the EEC to calculate turbofan power ratio (TPR)?

N1 speed

Temperature and pressure data

N2 speed

A

Temperature and pressure data

35
Q

What valve or valves are controlled when you move the fuel RUN/CUTOFF switch to the CUTOFF position?

Fuel metering valve (FMV) servo valve

Variable stator vane (VSV) servo valve

Spar valve and pressure raising and shutoff valve (PRSOV)

A

Spar valve and pressure raising and shutoff valve (PRSOV)

36
Q

What does the engine electronic controller (EEC) do if the speed sensor sense a difference in LP turbine speed and LP compressor speed?

Closes the spar valve

Opens the variable inlet guide vanes to decrease N1 speed

Does a protective shutdown of the engine

A

Does a protective shutdown of the engine

37
Q

What cools the engine oil?

Two air/oil heat exchangers

Two fuel/oil heat exchangers

Two oil surface coolers and one fuel/oil heat exchanger

A

Two oil surface coolers and one fuel/oil heat exchanger

38
Q

The engine has been shut down. How long should you wait to perform a check of the oil quantity?

Wait for at least 15 minutes

Wait for at least 5 minutes

Wait for at least 10 minutes

A

Wait for at least 10 minutes

39
Q

Wich engine power indication does NOT use speed probes?

Turbofan power ratio (TPR)

N2

N1

A

Turbofan power ratio (TPR)

40
Q

What does the intermediate gearbox vibration transducer sense?

Turbine vibration

Drive shaft, gear, and bearing vibration

Compressor vibration

A

Drive shaft, gear, and bearing vibration

41
Q

Where are the high pressure/intermediate pressure (HP/IP) turbine case cooling valve and the low pressure (LP) turbine case cooling valve located?

Right side of the engine

Left side of the engine

Top of the engine

A

Left side of the engine

42
Q

What moves the variable stator vane actuators to control internal engine airflow?

Solenoid valves using HP3 air pressure

HP6 bleed air

Servo fuel pressure from the hydro-mechanical unit (HMU)

A

Servo fuel pressure from the hydro-mechanical unit (HMU)

43
Q

During engine start, what speed data does the engine electronic controller (EEC) use to release the start switch to NORM?

N2 at idle

N3 at full power

Fan speed above idle

A

N2 at idle

44
Q

During left main engine start with airplane power supplied by 2 APU STARTER generators (ASG), wich variable frequency starter generator(s) (VFSG) START the engine?

The right only

The left or the right

The left and the right

A

The left and the right

45
Q

If hydraulic power is not available, what is needed to open the thrust reverser sleeves?

You use a manual hydraulic hand pump to deploy the thrust reverser translating

You use the ground support equipment to deploy the thrust reverser translating sleeves

You use the manual drive units (MDU) on the lower actuators to deploy the thrust reverser translating sleeves

A

You use the manual drive units (MDU) on the lower actuators to deploy the thrust reverser translating sleeves

46
Q

Wich type of sensors monitor the position of the thrust reverser actuator locks?

Proximity sensors

RVDT

LVDT

A

Proximity sensors

47
Q

Wich switch allows the thrust reverser to deploy and stow without the engine operating?

Thrust reverser test enable switch (TES)

Powered DOOR opening system (PDOS) switch

Track lock switch

A

Thrust reverser test enable switch (TES)

48
Q

What are the thrust reverser actuators synchronized by?

Flex-shafts in the deploy tubes

Hydraulic pressure

Thrust reverser synchronization unit

A

Flex-shafts in the deploy tubes

49
Q

*Wich percent thrust is produced by the low pressure compressor fan?

10

50

90

A

90

50
Q

*How does the low pressure (LP) turbine over speed system detect a break in the LP turbine shaft?

Very high Turbine Gas Temperature (TGT)

Comparaison of the Permanent Magnet Alternator (PMA) speed to N2 speed

Comparaison of the LP turbine speed to the LP compressor speed

A

Comparaison of the LP turbine speed to the LP compressor speed

51
Q

*On wich compressor are the variable stator vanes are installed?

High pressure

Intermediate pressure

Low pressure

A

Intermediate pressure

52
Q

*If the Permanent Magnet Alternator (PMA) has a failure, from where does the engine electronic controller (EEC) get power?

Airplane power

A capacitor on the flight deck

Main airplane battery

A

Airplane power

53
Q

*Wich component in the Hydro-Mechanical Unit (HMU) senses pressure changes across the fuel metering valve to control the high pressure (HP) pump output?

Metering Servo Valve (MSV)

Fuel Flow transmitter

Pressure drop control valve (PDCV)

A

Pressure drop control valve (PDCV)

54
Q

*How many pneumatic connections go to the Engine Electronic Controller (EEC)?

3

5

7

A

3

55
Q

*What valve or valves are controlled when you move the fuel RUN/CUTOFF switch to the CUTOFF position?

Fuel Metering Valve (FMV) servo valve

Spar Valve and Pressure Raising and Shutoff Valve (PRSOV)

Variable Stator Vane (VSV) servo valve

A

Spar Valve and Pressure Raising and Shutoff Valve (PRSOV)

56
Q

*Which component is used to cool Engine oil?

Air/Oil separator

Engine fuel/oil heat exchanger

Breather scavenge element

A

Engine fuel/oil heat exchanger

57
Q

*Where does the oil pressure transducer send differential pressure to?

Engine Electronic Controller (EEC)

Signal Conditioner Unit (SCU)

Engine Monitor Unit (EMU)

A

Engine Electronic Controller (EEC)

58
Q

*If a failure occurs and Turbofan Power Ratio (TPR) cannot be calculated, wich indication will be used for thrust?

N1

N2

EPR

A

N1

59
Q

*What does the intermediate gearbox vibration transducer sense?

Turbine vibration

Compressor vibration

Drive shaft, gear, and bearing vibration

A

Drive shaft, gear, and bearing vibration

60
Q

*What opens the engine section stator (ESS) anti-ice valve?

Electric servo motor

Servo fuel pressure from the HMU

High pressure (HP) 6 air

A

High pressure (HP) 6 air

61
Q

*During a ground engine start, the N2 indication does not increase from a max monitoring speed and the start switch stays in START. Which type of a failed start is this?

Failure to ignite

Stalled start

Hot start

A

Failure to ignite

62
Q

*What power must be available to use external power to start the left engine?

The AFT receptacle only

Both FWD EXT power receptacles

One FWD receptacle and the AFT receptacle

A

Both FWD EXT power receptacles

63
Q

*During a normal engine start, which component sends a signal to release the start switch from the START position?

Main engine data concentrator (MEDC)

Engine Monitor Unit (EMU)

Engine Electronic Controller (EEC)

A

Engine Electronic Controller (EEC)

64
Q

*What monitors the position of the thrust reverser Track Lock (T/L) mechanism?

Proximity Sensor

Rotary variable Differential Transformer (RVDT)

Linera Variable Differential Transformer (LVDT)

A

Proximity Sensor

65
Q

*Wich component supplies data for the position of the thrust reversers to the Engine Electronic Control (EEC)?

Track lock sensor

Directional control valve

Thrust reverser feedback unit

A

Thrust reverser feedback unit

66
Q

*Wich of these should you do before you open a thrust reverser half?

Position the GND TEST switch to ENABLE

Deactivate the leading edge flaps and slats

Remove power from the aircraft

A

Deactivate the leading edge flaps and slats

67
Q

*What lets the thrust reverser system get hydraulic power?

Isolation valve in the Hydraulic Control Unit (HCU)

Track Lock solenoid valve

Thrust reverser manual drive unit

A

Isolation valve in the Hydraulic Control Unit (HCU)

Boeing 787 RR (5 decks)

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