Engine (control, Indication, Oil...) Flashcards
Where does the P20-T20 probe senses pressure and temperature?
Engine inlet
Intermediate pressure compressor inlet
High pressure compressor inlet
ENGINE INLET
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)
TURBOFAN POWER RATIO
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)
ENGINE ELECTRONIC CONTROLLER (EEC)
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
IN THE THRUST CONTROL MODULE (TCM)
The emergency shutdown system shuts down the engine for a break in which shaft?
Stand Aisle Gearbox (SAGB)
N3
N1 or N2
N1 OR N2
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)
THE MAIN ENGINE DATA CONCENTRATOR
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
The sensor sends a signal to the oil debris sensing system signal conditioner
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
N2 rotors
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
Track lock mechanism in the right thrust reverser upper hinge beam area of each engine strut
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
In the C-duct latch panel at the 6:00 position of the thrust reversers
Which component make sure the actuators on both thrust reverser sleeves get the same amount of fluid?
T pieces
Hydraulic isolators
Hydraulic compensators
T pieces
Which indication will show on EICAS when the thrust reverser is deployed more than 90%?
Amber REV
Magenta REV
Green REV
Green REV
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)
The intermediate pressure (IP) compressor (N2)
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
The drains tank ejector pulls fuel out of the collector tank and sends it to the inlet of the engine fuel pump
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
Wing leading edge slats
Where is the centrifugal breather installed on the TRENT 1000 engine?
External gearbox
Oil tank and scavenge filter housing
Intermediate gearbox
External gearbox
Where are the fan blade moment weight located?
On the blade root
On the blade pressure side
On the blade suction side
On the blade root
What fills the space between the blades in the low pressure compressor?
Annulus fillers
Spinner fairing
Support ring
Annulus fillers
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
Fuel flow meter
Which component calculates engine vibration and supplies engine data reports?
Engine monitoring unit (EMU)
Central maintenance computer function (CMCF)
Engine electronic controller (EEC)
Engine monitoring unit (EMU)
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
Calculate engine thrust and fuel flow
What air source does low pressure turbine case cooling use?
HP3
IP3
Bypass Air
Bypass air
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
It opens to supplement IP8 air with HP3 air for turbine cooling and bearing pressurization at low power settings
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
Both igniters
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
Load cells at the hoist locations
Wich of these is the maximum tail wind allowed during a ground engine run?
10 knots
0 knots
5 knots
5 knots
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
Release tension latches at the 6:00 position
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
Use an external hydraulic hand pump connected to the TR cowl actuator quick disconnect fitting
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
Into the external gearbox breather housing
On wich compressor are the variable stator vanes installed?
Intermediate pressure
Low pressure
High pressure
Intermediate pressure
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
Primary power to the engine electronic controller (EEC)
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
Drain collector tank jet pump has a blockage
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
For the next in-flight start attempt
Wich of these is used by the EEC to calculate turbofan power ratio (TPR)?
N1 speed
Temperature and pressure data
N2 speed
Temperature and pressure data
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)
Spar valve and pressure raising and shutoff valve (PRSOV)
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
Does a protective shutdown of the engine
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
Two oil surface coolers and one fuel/oil heat exchanger
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
Wait for at least 10 minutes
Wich engine power indication does NOT use speed probes?
Turbofan power ratio (TPR)
N2
N1
Turbofan power ratio (TPR)
What does the intermediate gearbox vibration transducer sense?
Turbine vibration
Drive shaft, gear, and bearing vibration
Compressor vibration
Drive shaft, gear, and bearing vibration
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
Left side of the engine
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)
Servo fuel pressure from the hydro-mechanical unit (HMU)
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
N2 at idle
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
The left and the right
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
You use the manual drive units (MDU) on the lower actuators to deploy the thrust reverser translating sleeves
Wich type of sensors monitor the position of the thrust reverser actuator locks?
Proximity sensors
RVDT
LVDT
Proximity sensors
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
Thrust reverser test enable switch (TES)
What are the thrust reverser actuators synchronized by?
Flex-shafts in the deploy tubes
Hydraulic pressure
Thrust reverser synchronization unit
Flex-shafts in the deploy tubes
*Wich percent thrust is produced by the low pressure compressor fan?
10
50
90
90
*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
Comparaison of the LP turbine speed to the LP compressor speed
*On wich compressor are the variable stator vanes are installed?
High pressure
Intermediate pressure
Low pressure
Intermediate pressure
*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
Airplane power
*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)
Pressure drop control valve (PDCV)
*How many pneumatic connections go to the Engine Electronic Controller (EEC)?
3
5
7
3
*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
Spar Valve and Pressure Raising and Shutoff Valve (PRSOV)
*Which component is used to cool Engine oil?
Air/Oil separator
Engine fuel/oil heat exchanger
Breather scavenge element
Engine fuel/oil heat exchanger
*Where does the oil pressure transducer send differential pressure to?
Engine Electronic Controller (EEC)
Signal Conditioner Unit (SCU)
Engine Monitor Unit (EMU)
Engine Electronic Controller (EEC)
*If a failure occurs and Turbofan Power Ratio (TPR) cannot be calculated, wich indication will be used for thrust?
N1
N2
EPR
N1
*What does the intermediate gearbox vibration transducer sense?
Turbine vibration
Compressor vibration
Drive shaft, gear, and bearing vibration
Drive shaft, gear, and bearing vibration
*What opens the engine section stator (ESS) anti-ice valve?
Electric servo motor
Servo fuel pressure from the HMU
High pressure (HP) 6 air
High pressure (HP) 6 air
*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
Failure to ignite
*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
Both FWD EXT power receptacles
*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)
Engine Electronic Controller (EEC)
*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)
Proximity Sensor
*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
Thrust reverser feedback unit
*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
Deactivate the leading edge flaps and slats
*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
Isolation valve in the Hydraulic Control Unit (HCU)
