B787 exa4

-How does the EEC detect if a Low Pressure shaft (N1) breakage has occurred?. Detecting a difference between low turbine speed and low compressor speed. Detecting a difference between high compressor speed and low compressor speed. Detecting an un-commanded N1 deceleration.

The cargo compartment fire extinguishing flow valves are used to: Send the extinguishing agent to forward or aft/bulk cargo compartments. Send the fire cargo alarm to cargo fire protection system (CFPS) function. Filter extinguishing agent from low rate discharge (LRD) bottles.

The oil debris signal conditioner is used to: Compare the oil debris sensor (ODS) data to predetermined levels. Trigger a status messages if the oil supply filter is clog. Read data from engine oil level sensor.

-The drains collector tank receives fuel drained from: Fuel manifold after an engine shutdown on ground only. VSV and TCC servo actuators. Fuel manifold after an engine shutdown on ground or flight.

The type of compressor that the APU has is: Centrifugal, single stage. Axial, dual stage. Centrifugal and axial, dual stage.

How many fuel pumps are there in the fuel system?. Six pumps; two in each main tank, two in the center tank. Three pumps; one in each main tank, one in the center tank. Four pumps; one in each main tank, two in the center tank.

Fuel quantity management system (FQMS): Controls fuel pump and valve operation. Gives data to the common core system (CCS). Supplies power to the override jettison pumps.

When the fuel density sensor (FDS) measures the fuel density?. During ground operation only. Is used in all airplane operations. During flight only.

Water scavenge jet pumps are used to: Prevent water build-up in the main tanks only. Move fuel from the center tank to the main tank. Prevent water build-up in all tanks.

How many channels does the squib monitor control unit (SMCU) have?. Two channels. One channel. Three channels.

The Fuel quantity data concentrator (FQDC): Converts Analog / Digital signals and send data to the CCS. Is a function hosted in the CCS. Controls fuel valves and pumps operation.

For supplying fuel to the combustion chamber, the fuel system has. 6 simplex and 6 duplex nozzles. 12 duplex nozzles. 12 simplex nozzles.

The air separation module has: Five membrane separators connected in parallel. One active and two backup membrane separators. Three membrane separators connected in serial.

-To pressurize and control the fuel for starting and normal operation, the system uses: A fuel module. A fuel control unit. A mechanical fuel pump and control unit.

In the nitrogen generation system (NGS), the flow control valve is used to: Control the nitrogen enriched air (NEA) flow to the fuel tanks. Control the oxygen enriched air (OEA) flow overboard. Control the nitrogen enriched air (NEA) temperature to main fuel tanks.

When airborne, and if the airplane does not have any variable frequency starter generator (VFSG) on-line, the auto start function occurs: Immediately, with no delay. After 120 second delay. After 60 second delay.

How many low pressure turbine speed probes are there?. Four. There are not turbine speed probes. Two.

The Rolls Royce Trent 1000 has shaft breakage detections in: N1 and N2 only. N1 only. All three shafts.

How could you open the T/R cowls for maintenance if the power door opening system (PDOS) is inoperative?. You need use a manual hand pump method. You can not open the T/R cowls if the PDOS is inoperative. You can use the right hydraulic system.

For boroscope purposes How can be turned manually the IP Drum?. With a turning tool that attaches to the breather housing. Moving the fan disk faster than normal. Using an special tool to conect in either VFSG.

The APU controller sends a close signal to APU air inlet door if: APU RPM is less than 15%. The APU selector switch is in off position only. The remote shutdown switch in the P40 is pushed.

When is the amber REV indication shown on the EICAS?. When the translating sleeves have been move more than 10% and less than 90% of deploy. When the translating sleeve are fully deployed. When a thrust reverser trouble has occurred.

If the APU fire extinguishing bottle has overpressure: The safety relief disc will break and the agent release into APU fire zone. APU fire extinguishing bottle does not have overpressure relief valve. The safety relief disc will break and the agent release into stabilizer compartment.

Where is the APU controller located?. E12 Rack, forward of the bulk cargo door. Forward E&E compartment. Aft E&E compartment.

What functions can you do from the Refuel Control Panel (RCP)?. Refueling, Defueling and Transfer. Refueling only. Balancing and Refueling only.

Where are the thrust reverser feedback units located?. Next to the upper actuators. Refueling only. Balancing and Refueling only.

How many bleed valves are there?. Five, 3 IP and 2 HP bleed valves. Four, 2 IP and 2 HP bleed valves. Five, 2 IP and 3 HP bleed valves.

The fuel scavenge pump and fuel scavenge isolation valve work together to. Remove all fuel from center tank. Remove fuel from main tanks. Drain fuel from surge tank, during overfill operation.

HP shaft is supported by: Front one ball bearing, and rear one roller bearing. Front two ball bearing and rear one roller bearing. Front one roller bearing and rear one ball bearing.

Which air is used by the engine section stator (ESS) system to prevent ice in the intermediate inlet compressor?. IP8. HP6. 2,5 station.

If the fuel control switch is in cutoff position, the engine fire switch (fire handle) is: Unlocked. In the last position. Locked, because there is no engine fire.

For starting purpose, the APU uses: One ASG. Both ASG, allways. Pneumaic Starter.

During Battery power refueling procedure: Only Left main tank can be refueled. Only Center tank can be refueled. All fuel tanks can be refueled.

The jettison system remove fuel from: All three fuel tanks. Center tank only. Main tank only.

If both channels of squib monitor control unit (SMCU) are inoperative, then: The cargo fire extinguishing is inoperative. The cargo fire extinguishing will work normally. The cargo fire extinguishing is operative in aft cargo only.

How many igniters are used by the EEC for in flight engine start?. Both two igniters. One igniter during first attempt and both two igniters for others attempts. One igniter only.

With AC Power ( External Power ) and NO fuel pumps selected on P5 panel, wich fuel pump comes on to send fuel to the APU?. The Left AFT Boost Pump. The DC APU Pump. The Left FWD Boost Pump.

If the secondary air system (SAS) valve is open, which air is used to seal and pressurize the HP / IP turbine bearing chamber?. HP 3. IP 8. HP 6.

The fuel pump of the APU: It is an electrical two stages pump, controlled by the APUC. It is a mechanical pump, driven by an accessory gearbox. It is located in the LH wing tank (aircraft).

The main parameter of the Trent 1000 engine is: TPR. EPR. N1.