computador

In B787-8 the alternate ventilation system (AVS) uses: AVS inlet door and this is flush and opens into the fuselaje. Cabin recirculation fans only. AVS inlet door and this is flush and Close into the fuselaje.

Which components provides electric heat connections to the flight deck window?. Two window heat protection units (WHPU). Teen window heat protection units (WHPU). Three window heat protection units (WHPU).

When the oxygen masks fall from the PSUs. When does the oxygen start to flow?. When the breath sensor senses that a person breathes through the mask. Immediately after the mask compartment opens. When the cabin altitude decreases below 10,000 ft.

Related to Electrical Dimmable Window: It can be controlled by the window or the cabin attendant panel. It automatically darkens and cannot be manually adjusted. It can only be controlled from the passenger service unit (PSU).

The main composite material used in the B787 structure is: CFRP (Carbon fider reinforced plastic ). Aluminum-lithium alloy. Titanium alloy.

When both water pumps operate at same time?. During a system drain operation. During normal potable water service. During engine start.

The low limit valve (LLV) is used to. Prevent ice in the condenser. Control cabin humidity during cruise. Vent excess water overboard.

The wing ice protection system (WIPS) uses: Electro-thermal heater mats. Hot engine oil circulation. Chemical anti-ice fluid.

Where can you electrically adjust the cap or F/O seat from?. From two electrical control switch, one under a cover behind The head rest and one located on the inboard side of the seat. From the overhead maintenance panel. Only from the captain's side control panel.

How many cabin air compressors (CAC) are there?. Four, Two in each pack. Two, one in each pack. Six, three in each pack.

When can you operate de cargo doors?. When airplane is on ground and engines are not running. Only when external power is connected. Any time the airplane is below 10,000 ft.

The bleed air for the Rolls Royce Trent 1000 engine anti-ice system comes from: The high pressure compressor, stage 3. Stage 5 of the low-pressure compressor. The high pressure compressor, stage 5.

How can the flight crew members get out of the airplane during emergency conditions?. They can use the emergency escape descent devices near the Flight deck overhead. Through the forward passenger entry door only. Using the cockpit side windows.

How many channels does the valve control unit (VCU) have?. Two channels. Four channels. Six channels.

How many loops does the PECS have?. Two loops; left and right. Three loops; left, center and right. Four independent cooling loops.

The B787 has liquid cooling system in: Power electronics cooling system (PECS) and integrated cooling system (ICS). The environmental control system (ECS) only. The hydraulic system reservoirs.

How many sections does the air cycles machine have?. Three sections: compressor T1 and T2 turbines. Two sections: compressor and one turbine. Four sections: two compressors and two turbines.

Are the outflow valve (OFV) interchangeable between 787-8 and 787-9?. No, they are not. Yes, they are fully interchangeable. Yes, but only after a software update.

On the passenger entry doors, the purpose of the EPAS system is. It operates in emergency opening, with the mode selector in armed position. It automatically locks the door during taxi. It supplies electrical power to the cabin lights during boarding.

Where is the ODS controller located?. aft cargo compartment. In the forward avionics compartment. In the main equipment center below the flight deck.

The air cycle machine bypass valve (ABV) is used for. Pack outlet temperature control. Controlling pack airflow. Regulating cabin pressure.

How many seconds take to warm the ultraviolet water treatment unit?. 30 seconds. 80 seconds. 50 seconds.

How many locking lugs do the passenger seat fitting have?. The FWD passenger seat fitting has one locking lug and the AFT has two locking lugs. The FWD and AFT seat fittings each have one locking lug. The FWD seat fitting has two locking lugs and the AFT has one locking lug.

In relation to air conditioned ground connection, the 787-9 has: Two connections, one on each pack. One connection on the left side only. Two connections, one on each side of the aircraft.

The emergency power assist system (EPAS) safety switch is used to: Deactivate the system during maintenance. Reset the emergency power system after flight. Activate the EPAS for normal door operation.

The passenger oxygen is obtained from: Small high-pressure cylinder in each PSU. A central high-pressure oxygen bottle located in the aft cargo compartment. An oxygen generator installed above each PSU.

The lavatory/galley ventilation system is used to: Take air from lavatories, galley and crew rests and send it to the AFT outflow valve. Supply conditioned air directly to the lavatories and galleys only. Ventilate the cargo compartments through the forward outflow valve.

The outflow valve (OFV) has: Three motors, two for each channel of one valve control unit (VCU) and the third one to manual input from flight deck. Supply conditioned air directly to the lavatories and galleys only. Ventilate the cargo compartments through the forward outflow valve.

Which one of these units provides CAC operation efficiency?. The variable diffuser. The pack control valve. The primary heat exchanger.

The cabin air compressor deflector door has: Three positions, close partially and fully deployed controlled by one actuator only. Two positions, open and closed, controlled by two actuators. Four positions controlled independently by dual actuators.