aire acondicionado 787

In B787-8 the alternate ventilation system (AVS) uses: AVS inlet door and this is flush and opens into the fuselaje. They use the doors access to the FWD EE compartment and then go out of the airplane. They use the FWD left passenger entry door only.

Which components provides electric heat connections to the flight deck window?. Two window heat protection units (WHPU). To filter the air that goes to the cabin. To add a small quantity of ozone to the air that goes to the cabin.

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. From center hydraulic system. From air driven pump (ADP).

Related to Electrical Dimmable Window: It can be controlled by the window or the cabin attendant panel. Four dual sensors, one in each pack and two in the NGS. Six dual sensors, two in each pack and two in the NGS.

The main composite material used in the B787 structure is: CFRP (Carbon fider reinforced plastic ). From cabin attendant panel (CAP). When air condition is detected, the CCS controls automatically cargo compartment temperature.

When both water pumps operate at same time?. During a system drain operation. To the UV module and then to the water tank. To the FWD or AFT drain mast and then overboard.

The low limit valve (LLV) is used to. Prevent ice in the condenser. Three panes (plastic outer pane, window shade pane and plastic inner pane). Two panes (plastic outer pane and plastic inner pane).

The wing ice protection system (WIPS) uses: Electro-thermal heater mats. Two motors, one to valve control unit (VCU) and one to manual input. Three motors, one for onside VCU, the second for the offside VCU and the the third one to manual input from f light deck.

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. Two smoke detectors, both are located in the exhaust airflow near the FWD outflow valve. One smoke detector in the supply air flow.

How many cabin air compressors (CAC) are there?. Four, Two in each pack. The first five minutes after landing. During cruise mode.

When can you operate de cargo doors?. When airplane is on ground and engines are not running. From cabin attendant panel (CAP) only. From central maintenance computing function (CMCF) only.

The bleed air for the Rolls Royce Trent 1000 engine anti-ice system comes from: The high pressure compressor, stage 3. Pack does not have automatic protective shutdown. Bypass mode occurs.

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. in 787-9 its not necessary gnd connections. a single connection.

How many channels does the valve control unit (VCU) have?. Two channels. Two layers of plastic with a window shape between them. a single connection.

How many loops does the PECS have?. Two loops; left and right. When the internal closing/opening handle is set in Closed position. When the speed of the A/C is higher than 80 Kts.

The B787 has liquid cooling system in: Power electronics cooling system (PECS) and integrated cooling system (ICS). Differential pressure. Aircraft pneumatic pressure.

How many sections does the air cycles machine have?. Three sections: compressor T1 and T2 turbines. If The EPA system operated, the door will open in emergency mode and the slide will deploy. It will not be possible to open the door from outside with the mode selector lever in Auto (Armed).

Are the outflow valve (OFV) interchangeable between 787-8 and 787-9?. No, they are not. Remote data concentrator (RDC). Associated common motor start controller (CMSC).

On the passenger entry doors, the purpose of the EPAS system is. It operates in emergency opening, with the mode selector in armed position. Internal of cargo comparments. On cargo doors.

Where is the ODS controller located?. aft cargo compartment. Common core system (CCS). One window heat protection unit (WHPU).

The air cycle machine bypass valve (ABV) is used for. Pack outlet temperature control. Left main landing gear. FWD E/E bay.

How many seconds take to warm the ultraviolet water treatment unit?. 80 seconds. Two sections; turbine and compressor. Three sections; fan, compressor and turbine.

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. Air from the electrical compressors. Air taken from the engines (Fan Air).

In relation to air conditioned ground connection, the 787-9 has: Two connections, one on each pack. It controls a possible overcurrent of CAC. It controls the temperature to different cabin zones.

The emergency power assist system (EPAS) safety switch is used to: Deactivate the system during maintenance. It is attached to the aft bulkhead and has electrical and manual adjustments. It is attached to the aft bulkhead and has an electrical adjustment only.

The passenger oxygen is obtained from: Small high-pressure cylinder in each PSU. A pneumatically duct to prevent ice in FWD windows only. It controls the temperature to different cabin zones.

Which one of these units provides CAC operation efficiency?. The variable diffuser. The system does not delay. 40 seconds.

The lavatory/galley ventilation system is used to: Take air from lavatories, galley and crew rests and send it to the AFT outflow valve. Two dedicated inlet doors, due to increase of airplane volume. A dedicated inlet door.

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. Two dedicated inlet doors, due to increase of airplane volume. Two; one in each pack.

The cabin air compressor deflector door has: Three positions, close partially and fully deployed controlled by one actuator only. One in LH pack only. Two dedicated inlet doors, due to increase of airplane volume.