WorksheetsMECHANIC 3
Total questions: 109
Worksheet time: 55mins
The main sections of pylon(A, B1, B2)
The pylon box, pylon fairing, pylon secondary structure.
The pylon box, pylon primary structure, pylon secondary structure, pylon fairing.
Pylon box, pylon fairing.
The main functions of pylon(A, B1, B2)
Hold the power plant.
Hold the power plant; transmit the engine thrust to the aircraft.
Hold the power plant, transmit the engine thrust to the aircraft, and protect the ducts and wirings from engine to aircraft.
Inspection of the Pylons for missing fasteners(A, B1, B2)
No missing fastener on the forward edge of the panels, no missing fastener in the corners.
No missing fastener on the forward edge of the panels, one fastener can be missing in the corners.
Dispatch A/C with defect 10 flight cycles for missing fasteners on the corners.
The nacelle major assemblies are(A, B1, B2)
Air inlet cowl, fan cowl doors, thrust reverser assembly, exhaust system.
Thrust reverser assembly, the engine.
Air inlet cowl, fan cowl doors, thrust reverser assembly, exhaust system, engine.
With one fan cowl latch is opened(A, B1, B2)
The fan cowl latch access panel cannot close.
The closure of fan cowl latch access panel is independent on the status of fan cowl latches.
Closing the fan cowl access panel will cause the closure of fan cowl latch.
When PDOS ( power door operating system) inoperative(A, B1, B2)
The fan cowl and thrust reverser cowl can be opened by operating external pump that connects to opening actuator.
The fan cowl is opened by pushing manually; the thrust reverser cowl can be opened by operating external pump.
The fan cowl and thrust reverser cowl are opened by pushing manually
If fuel leak at the double-wall fuel pipe inside the pylon(A, B1, B2)
It will be drained to engine drain mast.
It will be drained to pylon drain port on the aft section of the aft fairing
It will be sent to engine fuel drain collector tank.
The Trimmable Horizontal Stabilizer (THS) function(A, B1, B2)
Maintain A/C stable along the pitch axis.
Together with the elevators to control the pitch of the aircraft.
Control the aircraft and keep it stable around its pitch axis.
You see some holes along the bottom surface of THS during transit check(A, B1, B2)
It is abnormal; you must apply hi speed tape to maintain the aerodynamic contour of the THS.
Check for leak and then seal by hi speed tape.
It is normal; it belongs to the THS drainage system.
The THS is protected against lighting strikes(A, B1, B2)
By static dischargers.
By copper foil and metallic bonding strips on skin of THS.
Both of above.
The load in THS is mainly held by(A, B1, B2)
Spar box.
Attach fittings.
Aprons.
The elevator has an end cap installed on the inboard side(A, B1, B2)
To seal the internal elevator structure against moisture and foreign object.
To smooth the air passing on the elevator by keeping the clearance between the elevator and rear fuselage to a minimum.
To protect the rear fuselage from impacting with elevator.
The primary components of the rudder are(A, B1, B2)
The rudder main structure, the rudder leading edge, the rudder cap.
The rudder main structure, the spar, the skin panels.
The rudder main structure, the spar, the skin panels, the rudder leading edge, the rudder cap.
To access to the inner side of the rudder main structure(A, B1, B2)
By removing left leading-edge panels, then through the cut outs of rudder spar.
From the rear fuselage compartment( THS actuator compartment) then go up.
By removing right leading-edge panels, then through the cut outs of rudder spar.
The vertical stabilizer leading edge(A, B1, B2)
Gives protection against damage to structural parts, the HF antenna and the ETACS (External and Taxiing Aid Camera System) camera.
Gives protection to structural parts, the HF antenna, the ETACS camera, the VOR antenna.
Gives protection to the HF antenna, the ETACS camera, the VOR antenna.
What are the major powerplant assemblies?(A, B1, B2)
Nose cowl, Fan Cowl, Thrust Reverser, Exhaust Nozzle.
Fan Cowl, Pylon, Thrust Reverser.
Nose cowl, Thrust Reverser, Exhaust Nozzle.
What medium is used by PDOS as the hydraulic fluid?(A, B1, B2)
The engine oil stored in its own dedicated reservoir.
The hydraulic stored in its own dedicated reservoir.
The fuel stored in its own dedicated reservoir.
If the wing Drop Nozzle Device(DND) is extended can you open the fan cowl?(A, B1, B2)
Yes, in intermediate or in fully open position.
No.
Yes, but only in intermediate position.
Which side of Fan Cowl is the oil access panel on?(A, B1, B2)
Right Hand Side
Left Hand Side
Left Hand Side of TH/R Cowl
If the Fan cowl latch hooks are incorrectly fitted, can you close the latch access panel?(A, B1, B2)
No
Yes
It depends on the latch type.
What other provision is on the drain mast?(A, B1, B2)
Oil breather
Fuel drain tank
VSV actuator sump
Are there any limits for dry drain leak rates?(A, B1, B2)
No
Yes, but not from all components connected to the dry drain system
Yes, the limitations are specified in AMP task
How does the breather remove the oil from the airflow?(A, B1, B2)
Centrifugal force and a Retimet segment.
By s
How does the breather remove the oil from the airflow?
Centrifugal force and a Retimet segment.
By spiral vanes and Retimet segment.
By separate duct and Retimet segment.
How many hydraulic pumps are there on each engine?
1
2
3
Describe the features of the Trent XWB Engine?
A two concentric shaft configuration with a very high by pass ratio with one piece disc and blade combination (Blisk) compressor design.
A three concentric shaft configuration with a very high by pass ratio with one piece disc and blade combination (Blisk) compressor design.
A three concentric shaft configuration with a very high by pass ratio with one piece disc and blade combination (Blisk) turbine design.
How many shafts does the Trent XWB-84 have?
1
2
3
Most thrust is provided by?
A core( primary) gas flow
A gas flow that drives the turbines.
A By-pass( secondary) air flow.
Where is the external gearbox located?
At the bottom of the Fan Case
At the bottom of the Intermediate case.
At the bottom of the HPC rear case.
What is the direction of rotations for the engine's shafts when seen from the front?
LP&IP rotor turn CW(ClockWise), HP rotor turns CCW(Counter ClockWise).
LP&IP rotor turn CCW, HP rotor turns CW.
LP rotor turns CCW( Counter ClockWise), IP&HP rotor turn CW(ClockWise).
What should be considered when ground running an engine?
Weather conditions, wind directions, gusting, operational limits.
MP task of the engine operational limits.
MP task of the engine safety precautions.
What does the LP system consists of?
A single stage compressor (Fan) assembly driven by a four-stage turbine.
A single stage compressor (Fan) assembly driven by a five-stage turbine.
A single stage compressor (Fan) assembly driven by a six-stage turbine.
What does the IP system consists of?
An eight-stage axial flow compressor driven by a two-stage turbine.
Annine-stage axial flowcompressor driven by a two-stage turbine.
Anten-stage axial flowcompressor driven by a two-stage turbine.
What does the HP system consists of?
An six-stage axial flow compressor driven by a single-stage turbine.
An five-stage axial flow compressor driven by a single-stage turbine.
An four-stage axial flow compressor driven by a single-stage turbine.
How many sealed compartment( Fire Zone) does the Trent WXB-84 engine have?
1
2
3
The External Gearbox (EGB) is driven by:
HP System
IP System
LP System
The thrust of the engine Trent WXB-84 is flat rated up to:
ISA + 35 oC
ISA + 25 oC
ISA + 15 oC
The description of the combustion system on engine Trent WXB-84 is as follow:
Annular construction incorporating 20 fuel spray nozzles and 2 igniter plugs.
Annular construction incorporating 24 fuel spray nozzles and 2 igniter plugs.
Annular constructionincorporating 30 fuel spray nozzles and 2 igniter plugs.
How many Fan Blades are fitted on Trent XWB engine?
22
24
36
Where is the external gearbox driven from?
HPC
IPC
LPC
How many fuel spray nozzles (FSN) are there?
20
24
30
What different types of air supply can we use for the engine start?
Other engine, APU, Ground cart
APU
Other engine
How many position do the engine master levers have and what are they?
3: On, Normal and OFF
3: Cranking, Normal and Ignition/Starting
2: On and Off
Is the starting page displayed on the primary or secondary ECAM?
Primary display
Secondary display
Both displays
During start how do you know which ignition system is operating?
By detailed indication on ECAM
Indicates A, B or both on starting page
This can not be known.
Where is the starter control valve ( SCV) located?
On the lower L/H side fan cowl about 8 o'clock
On the lower R/H side fan cowl about 4 o'clock
On the bottom of R/H fan cowl.
How is the starter control valve( SCV) commanded to operate?
Through the EEC
By master switch
By manual start pushbutton
Can the starter control valve (SCV) operate if it has electrical failed?
Can not
It has a manual opening lever
It has a manual opening ½ inch square drive
How do you service the Air Turbine Starter ( ATS) oil?
This has independent system with the pressure and overfill ports.
It shares the VFG oil.
It shares the engine oil.
What is the location of the two ignition exciter units?
Lower L/H Fan case
Lower R/H Fan case
In zone 2 under Gas Generator Fairing
Where is the location of the ignitor plugs?
4 o'clock and 8 o'clock lower combustor
4 o'clock and 5 o'clock on R/H side
7 o'clock and 8 o'clock on L/H side
How many IP8 handling bleed valves are there?
3
5
6
How many HP3 handling bleed valves are there?
3
5
6
Why do we ventilate the engine zones?
To remove flammable/ Hazardous fumes.
To cool down the zones.
To cool down the components installed in zones.
Why do we ventilate the engine zones?
To remove flammable/ Hazardous fumes.
To cool down the zones.
To cool down the components installed in zones.
What burst ducts is the zone 1 temperature sensor likely to detect?
IPTCC duct
Starter and NAI ducts
ESS
What type of temperature sensor is in zone 3?
A thermocouple (TC)
A resistance temperature device ( RTD)
TC and RTD type
Which sensor is used for NAC indications?
Zone 1
Zone 2
Zone 3
HP3 cooling air is used to cool what three main areas?
IPT cooling, IPTNGV stage 1 cooling, sealing of the HPT rear face, IP 1 & 2 front rims, IPT rear face.
HPT cooling, IPTNGV stage 1 cooling, IP 1 & 2 front rims, IPT rear face.
HPT cooling, IPTNGV stage 1 cooling, IPT rear face.
What is the purpose of the TCC system?
To cool the LP, IP turbine case
To cool the HP, IP turbine case
To cool the LP, IP &HP turbine case
IP/HP TCC valves. Can they be locked?
Yes
No
Yes, in Open position.
Where is the locking bolt of IP/HP TCC valves located?
On the TCC control rode
On the TH/R case
On the TCC valve body
What electrical supplies are provided to the EEC?
A/C 230VAC Emergency, A/C 230VAC Normal, PMA above 6.46% N3
A/C 115VAC Emergency, A/C 230VAC Normal, PMA above 6.46% N3
A/C 115VAC Emergency, A/C 115VAC Normal, PMA above 6.46% N3
What is the location of the PMA?
External gearbox rear face
External gearbox front face
External gearbox R/H side
What provides the primary N3 signal from the PMA?
A single phase winding within the PMA, signals to both channel A and B
A dual phase windings within the PMA, one for a channel
A dual phase windings within the PMA, signals to both channel A and B
What colours are indicated with EEC channel and what are they?
Green channel A, Yellow Channel B
Yellow channel A, Blue Channel B
Yellow channel A, Green Channel B
On an electrical harness loom on engine, if it had FC in the identification what does that indicate?
Front Case
Fuel Control
Fan Case
What is the EMU used for?
Engine Health Monitoring
Control on engine operation
Electrical power management
At Engine power up what does the EEC read to get relevant Engine information?
EIF
DEP
EMU
When should the DEP be reprogrammed?
The DEP is new to the engine, rating change, trim valve change after overhaul
The DEP is new to the engine or replacement of EEC.
The DEP is new to the engine or replacement of EMU.
From which zone is the nacelle temperature indication obtained?
Zone 1
Zone 2
Zone 3
Which speed is the controlling speed for the XWB thrust?
LP
IP
HP
State the location of the T20 probe?
Front of Fan case struts
Air intake L/H side
Front of ESS vanes.
Inside the outer wall of each T/R cowl, there are:
The five T/R blocker door assembly
The six T/R blocker door assembly
The seven T/R blocker door assembly
The ETRAC is located in:
the forward avionic compartment
the forward cargo compartment
the fan case
The T/R actuators are driven by:
Dedicated hydraulic power
Pneumatic power
Electric power
What is the location of the oil tank?
Fan case R/H side 3 o'clock position
Fan case L/H side 3 o'clock position
Mounted on the external gearbox.
Where is the oil scavenge filter located?
Mounted on the scavenge oil pump assembly.
Mounted on the oil tank
Mounted on the external gearbox.
How is the oil flow in the scavenge line maintained if the oil scavenge filter becomes blocked?
By the use of a by-pass valve
By the use of a standby pump
By the use of a back-up pump
How many Magnetic Chip Detectors( MCD) may be there?
8
7
6
Where is the oil pressure filter located and how is it identified?
On the oil pressure pump, painted yellow.
On the oil scavenge pump, pained yellow.
On the oil tank, pained yellow.
What controls the FBH valve?
EEC
EMU
HMU
When would the FBH vent valve be closed?
At high power setting.
At idle power setting only.
At lower power setting.
In what conditions would the FBH vent valve be open?
At high power settings and at flight idle at altitude
At low power settings and at idle
At idle power
The engine oil vent system consists of?
FBH vent valve and centrifugal breather
A de-aerator side the oil tank and a centrifugal breather
FBH vent valve and vent pump
On scavenge oil filter removal what basic provisions should be made?
A clean container to collect the oil and filter
A clean clothes
A clean plastic foil
On oil pressure filter replacement how tight should the filter bowl be tightened?
Hand tight only
By proper torque wrench
By using the chain wrench
How is the engine oil level checked after 6 hours after engine shutdown?
Perform the engine running 5 minutes then check/fill the engine with oil as necessary.
If oil level is visible in the sight glass, it means acceptable.
If oil level is below the 'FULL' mark, it means acceptable.
Describe the features of the Trent XWB Engine?
A two concentric shaft configuration with a very high by pass ratio with one piece disc and bladecombination (Blisk) compressor design.
A three concentric shaft configuration with a very high by pass ratio with one piece disc and blade combination (Blisk) compressor design.
A three concentric shaft configuration with a very high by pass ratio with one piece disc and bladecombination (Blisk) turbine design.
How many shafts does the Trent XWB-84 have?
1
2
3
Most thrust is provided by?
A core( primary) gas flow
A gas flow that drives the turbines.
A By-pass( secondary) air flow.
Where is the external gearbox located?
At the bottom of the Fan Case
At the bottom of the Intermediate case.
At the bottom of the HPC rear case.
What is the direction of rotations for the engine's shafts when seen from the front?
LP&IP rotor turn CW(ClockWise), HP rotor turns CCW(Counter ClockWise).
LP&IP rotor turn CCW, HP rotor turns CW.
LP rotor turns CCW( Counter ClockWise), IP&HP rotor turn CW(ClockWise).
What should be considered when ground running an engine?
Weather conditions, wind directions, gusting, operational limits.
MP task of the engine operational limits.
MP task of the engine safety precautions.
What does the LP system consists of ?
A single stage compressor (Fan) assembly driven by a four-stage turbine.
A single stage compressor (Fan) assembly driven by a five-stage turbine.
A single stage compressor (Fan) assembly driven by a six-stage turbine.
What does the IP system consists of ?
An eight-stage axial flow compressor driven by a two-stage turbine.
Annine-stage axial flowcompressor driven by a two-stage turbine.
Anten-stage axial flowcompressor driven by a two-stage turbine.
What does the HP system consists of ?
An six-stage axial flow compressor driven by a single-stage turbine.
Anfive-stage axial flow compressor driven by a single-stage turbine.
Anfour-stage axial flowcompressor driven by a single-stage turbine.
How many sealed compartment( Fire Zone) does the Trent WXB-84 engine have?
1
2
3
The External Gearbox (EGB) is driven by:
HP System
IP System
LP System
The thrust of the engine Trent WXB-84 is flat rated up to:
ISA + 35oC
ISA + 25 oC
ISA + 15 oC
The description of the combustion system on engine Trent WXB-84 is as follow:
Annular construction incorporating 20 fuel spray nozzles and 2 igniter plugs.
Annular construction incorporating 24 fuel spray nozzles and 2 igniter plugs.
Annular constructionincorporating 30 fuel spray nozzles and 2 igniter plugs.
What is the risk when applying the molybdenum disulfide lubricant?
The lubricants decomposes at high tension load and release sulfur. Sulfur can cause damage to the lubricated engine part.
The lubricants decomposes at high temperatures (> 300 oC ) and release sulfur. Sulfur can cause damage to the lubricated engine part.
The lubricants decomposes at high mechanical load and release sulfur. Sulfur can cause damage to the lubricated engine part.
A 'CRACKED' damage type to metal parts is define as:
A linear opening that can cause the material to break.
Damage to the surface of a part when it is hit with an object.
A damage that changes the initial shape or contour of a material.
What is true regarding the cotter pin installation?
If you cannot align the nut(s) slots with the hole for the pin(s), replace the nut(s).
Continue to tighten the nut(s) to align the nut(s) slots with the hole for the pin(s) if max torque is not reached.
Release the the nut(s) to align the nut(s) slots with the hole for the pin(s).
If the lockwire and the safety cable are specified in the related locking procedure:
The use of lock wire is preferable
The use of safety cable is preferable
There is no priority order
For 0.8 mm locking wire, the correct number twists per 1 inch length is:
6 to 12
10 to 15
12 to 15
Regarding the torque load application, what is true?
The torque load does not change when using an extension spanner at 90 degrees to the torque wrench.
The torque load does not change when the extension spanner align with the torque wrench.
The torque load does not change when using the extension spanner.
In general the correct sequence to torque tighten bolts that are near to each other is:
In a continuous sequence
In a matrix sequence
In a symmetrical sequence
How many different types of composite material structures?
Monolithic
Sandwich and CFRP
Monolithic and Sandwich
