Boeing B777 – Air Systems - SmartCockpit - Airline training guides, Aviation, Operations, Safety

After engine start, what is the correct position for the L ENG and R ENG BLEED AIR switches?

ON.

OFF.

AUTO.

Correct! Wrong!

Why should you minimize flight time at low altitude when the EQUIP COOLING OVRD message is displayed?

AFT and BULK cargo compartments may overheat.

Electronic Equipment and displays may fail.

Pack temperature would cause damage.

Recirculation fans may not cool equipment adequately.

Correct! Wrong!

Where is the target temperature for the air conditioning zones displayed?

On the air synoptic.

On the lower EICAS display when pressurization is selected to MAN.

On the HYD synoptic.

On the upper EICAS display when pressurization is selected to MAN.

Correct! Wrong!

How are zone target temperatures selected, and what is the temperature range?

Automatically adjusted based on the outside temperature with a temperature range between 15°C and 35°C.

Manually set by the flight crew with a temperature range between 18°C and 29°C.

Manually set by the cabin crew with a temperature range between 0°C and 30°C.

Automatically set by the system with a temperature range between 10°C and 40°C.

Correct! Wrong!

What cabin differential pressure is scheduled for takeoff?

Slighlty negative.

Zero.

Slighlty positive.

Equal to the outside pressure.

Correct! Wrong!

What is the most correct statement about the equipment cooling override mode?

The mode is selected automatically, and the EICAS message EQUIP COOLING OVRD is displayed.

The mode is selected automatically, the EICAS message EQUIP COOLING OVRD is displayed. There is a non normal procedure for this message.

The mode is selected automatically.

The EICAS message EQUIP COOLING OVRD is displayed and there is a non normal procedure to be performed.

Correct! Wrong!

When is the pack OFF light illuminated amber?

When the valve ıs failed closed.

When there is a pack or compressor outlet high temperature condition.

All statements are true.

During engine start.

Correct! Wrong!

Which of the followings are bleed air sources?

Trim air.

Demand pump.

APU and Ground Cart.

Packs.

Correct! Wrong!

What is the cabin altitude at maximum certified airplane operating altitude?

7400 feet.

8000 feet.

9400 feet.

9000 feet.

Correct! Wrong!

What is the normal source of bleed air to start the second engine?

Engine.

APU.

Ground cart(s)

Correct! Wrong!

If an overheat or other significant pack fault is detected, the pack shuts down automatically. An attempt to restore pack operation may not be made by pressing the AIR COND RESET switch.

False.

True.

Correct! Wrong!

What will cause the automatic closure of a bleed valve?

Ground cart supplying bleed air.

Engine fire switch pulled.

Bleed air overtemp or overpressure.

APU operation

Correct! Wrong!

During preflight, what position should the APU BLEED AIR switch be in?

OFF.

AUTO or OFF

AUTO.

Correct! Wrong!

If cruise altitude is unavailable from the FMC in AUTO, the cabin altitude controllers assume a cruise altitude of:

39 000 ft.

35 000 ft.

33 000 ft.

37 000 ft.

Correct! Wrong!

What happens when you select the FWR CARGO A/C control to AUTO?

Packs operate at reduced flow rate.

The EICAS advisory message CARGO A/C FWD is displayed.

The forward cargo heating system is shutoff and a selected temperature is displayed on the AIR synoptic.

Pack flow rate is modulated to achieve a pack outlet temperature between 5 and 43°C.

Correct! Wrong!

The cabin altitude limiter closes both outflow valves if cabin altitude exceeds:

13 500 ft

10 000 ft.

14 000 ft.

15 000 ft.

Correct! Wrong!

What is bleed air used for?

Pressurizing the hydraulics reservoir and sspirating the TAT probe.

Pressurizing the hydraulics reservoir.

Aspirating the TAT probe.

Correct! Wrong!

What happens when the BULK CARGO TEMPERATURE selector is positioned to HIGH?

The compartment temp. İs automatically kept approximately 7°C.

The bulk cargo compartment ventilation fan operates continuously.

The compartment temperature is automatically kept at approximately 15°C.

The compartment temperature is automatically kept at approximately 21°C.

Correct! Wrong!

The aft and bulk cargo compartments have independent bleed air heating systems. An insulated curtain separates the two compartments.

False.

True.

Correct! Wrong!

What determines the pack outlet temperature?

The flight deck temperature selector.

All statements are correct.

The CABIN TEMERATURE selector.

The temperature zone requiring the coolest temperature controls the pack outlet temperature.

Correct! Wrong!

Which of the following are landing elevation limits for B777?

1000 feet below to 14000 feet above sea level.

1000 feet below to 12000 feet above sea level.

2000 feet below to 12000 feet above sea level.

2000 feet below to 13000 feet above sea level.

Correct! Wrong!

Where does air to the cabin come from, and what are the additional sources?

Both packs - upper and lower recirculation systems.

APU bleed air - outflow valves.

Left pack - upper recirculation system.

Right pack - lower recirculation system.

Correct! Wrong!

Why should the CABIN TEMP control be set to mid position?

To set the actual temperature in cabin zones A-F.

To prevent cabin overheat during low altitude flight

To set the maximum temperature in any zone.

To allows ± 6˚C temperature range adjustment on cabin attendant panel.

Correct! Wrong!

Which system(s) supply trim air to the flight deck?

Right trim air system.

Left trim air system.

Both right and left trim air systems.

Center trim air system.

Correct! Wrong!

What is the source of supplemental heat for the aft cargo compartment?

An electric heater.

Forward equipment cooling exhaust air.

Left recirculation fan.

An independent bleed air heating system.

Correct! Wrong!

Whic trim air valve can be moved directly by the flight crew, and how is it monitored?

Cabin trim air valve - monitored through the flight deck temperature selector.

Flight trim air valve - through a manual positions of the flight deck temperature selector.

Right trim air valve - monitored through the air synoptic.

Left trim air valve - monitored through the engine display.

Correct! Wrong!

Automatic ventilation of the Forward Cargo Compartment Air Conditioning System ensures that smoke and objectionable odors do not enter the flight deck or passenger cabin.

False.

True.

Correct! Wrong!

Each trim air system supplies three zone supply ducts, with the left trim air system also supplying the flight deck.

True.

False.

Correct! Wrong!

Which component can be reset by the air conditioning reset switch.

Packs only.

The entire air conditioning system.

Reciculation fan switches only.

Trim air valves and recirculation fans.

Correct! Wrong!

What does the PACK MODE R EICAS message indicate?

The right pack is operating in the standby cooling mode.

The airplane is in unfavorable conditions and right pack output temperature is too high.

The right pack is inoperative.

The standby cooling mode is inoperative

Correct! Wrong!

How are cargo compartments controlled in terms of temperature ranges?

Low is 4°C to 10°C - High is 18°C to 24°C

Low is 5°C to 10°C - High is 20°C to 25°C

Low is 10°C to 15°C - High is 25°C to 30°C

Low is 0°C to 5°C - High is 15°C to 24°C

Correct! Wrong!

What happens if the forward equipment cooling primary supply fan fails?

The aft equipment cooling and ventilating system provides cooling.

The EICAS advisory message EQUIP COOLING is displayed.

The backup supply fan operates automatically.

The forward system reconfigures automatically to an override mode.

Correct! Wrong!

When does a visible orange lip indicate on a pressure relief valve?

Advise maintenance of the open valve.

No action is required. The valve is in its normally closed position.

Position the landing altitude switch to AUTO.

Set cabin altitude to less than 8000 ft.

Correct! Wrong!

If a duct leak is detected, the system automatically isolates the leak. The EICAS caution message BLEED LEAK is displayed. The automatic isolation logic may include:

Betwwen one and four sequential steps.

One, two, or three sequential steps.

One or two sequential steps

Correct! Wrong!

During isolation, the ENGINE and/or APU bleed switch OFF lights and the ISOLATION switch CLOSED lights illuminate and extinguish as the repective valves close and open.

During preflight, what position should the FWD and AFT OUTFLOW VALVE switches and LDG ALT selector be in?

OUTFLOW VALVE switches in MAN and LDG ALT selector pushed IN.

OUTFLOW VALVE switches in AUTO and LDG ALT selector pushed IN.

OUTFLOW VALVE switches in AUTO and LDG ALT selector pulled out.

OUTFLOW VALVE switches in OFF and LDG ALT selector pushed IN.

Correct! Wrong!

If a pack overheats or fails the pack shuts down and an air conditioning may be needed.

True.

False.

Correct! Wrong!

What must be done to manually set a landing altitude?

Press the AUTO button on the cabin altitude controller

Adjust the trim air valves to the desired altitude.

Pull the manual landing elevation selector out then set the required altitude.

Check the FMC for automatic landing elevation adjustment.

Correct! Wrong!

In flight, the cabin altitude controller operates in:

A cruise mode.

All statements are correct.

A descent mode.

A climb mode.

Correct! Wrong!

For Boeing 777, the APU Bleed Air is available at all altitudes.

True.

False.

Correct! Wrong!

If landing altitude is unavailable from the FMC (and not set in MAN), the EICAS advisory message LANDING ALT is displayed. The cabin altitude controller:

Assumes a landing altitude of 2000 ft.

Assumes a landing altitude of 1500 ft.

Assumes a landing altitude of 1000 ft.

Assumes a landing altitude of 200 ft.

Correct! Wrong!

What landing altitude is displayed on the EICAS pressurization system indications when the airplane has traveled more than 400 miles or has passed the halfway point?

The destination airport altitude to the nearest 100 feet.

The alternate airport altitude to the nearest 50 feet.

The destination airport altitude to the nearest 500 feet.

The departure airport altitude to the nearest 100 feet.

Correct! Wrong!

If the cruise altitude is unavailable from the FMC in AUTO, the cabin altitude controllers assume a cruise altitude of 39,000 feet.

True.

False.

Correct! Wrong!

Forward Equipment Cooling system does not reconfigure automatically to override mode automatically for which of the following?

When high air airflow is detected in flight.

When the FWD CARGO FIRE ARM switch is ARMED.

When both supply fans fail in flight.

When the EQUIP COOLING switch is in OVRD.

Correct! Wrong!

The LANDING ALTITUDE advisory message indicates which of the following?

The FMC does not supply a landing altitude or the landing altitude selector is pulled.

A landing was made to different altitude.

The preset landing altitude is not correct.

Correct! Wrong!

What action is required during preflight if the LANDING ALTITUDE EICAS message is displayed with the FWD and AFT OUTFLOW VALVE switches in AUTO?

Push the LDG ALT selector OUT.

Select the FWD and AFT OUTFLOW valve switches to MAN.

Push the LDG ALT selector IN.

Pull the LDG ALT

Correct! Wrong!

Landing altitude (normally provided by the FMC) can be manually set using the LANDING ALTITUDE selector. Landing field selection limits are _ below sea level to _ feet above sea level.

1500 ft and 16 000 ft.

2000 ft and 14 000 ft.

1000 ft and 15 000 ft.

1000 ft and 13 000 ft

Correct! Wrong!

What causes the trim air FAULT light to come on?

The trim air valve is commanded open

The pack flow control valves are commanded closed.

All statements are correct.

The trim air valve is commanded closed because of a zone supply duct overheat.

Correct! Wrong!

Two outflow valves are installed: one forward and one aft. Normally, most of the outflow is through the forward outflow valve.

False.

True.

Correct! Wrong!

This improves ventilation and smoke removal. Cabin altitude and full ventilation rates can be maintained by either valve.

What does the MAN position on the FLT DECK TEMP control do?

It removes power from the trim air system.

It removes control at the cabin attendant panel.

It allows the trim air valve to operate manually.

It causes the packs to provide air at an average mid temperature range.

Correct! Wrong!

Flight Deck Temperature (FLT DECK TEMP) selector in mid position sets the temperature to approximately 75°F (24°C)

True

False.

Correct! Wrong!

Why should you minimize flight time at low altitude when the EQUIP COOLING OVRD message is displayed?

Equipment and displays could fail.

Pack temperature would cause damage.

AFT and BULK cargo compartments may overheat.

Recirculation fans may not cool equipment adequately.

Correct! Wrong!

How many packs are there and what is their main function?

One pack - managing ventilation.

Four packs - controlling pressurization.

Three packs - providing cooling.

Two packs - cooling supplied hot bleed air.

Correct! Wrong!

What system provides the heat for the forward cargo compartment?

Bleed air from the engines.

Aft cargo heat system.

Exhaust from the equipment cooling system.

The trim air system.

Correct! Wrong!

During climb, what parameter(s) schedule cabin altitude?

Airplane flight altitude.

Airplane flight altitude and pressure altitude.

A constant pressure differential.

Airplane climb rate and flight plan cruise altitude.

Correct! Wrong!

In the standby cooling mode, what will the pack automatically do if the airplane is not in an area of sufficient cooling?

Decrease airflow to half rate.

Fail the pack standby cooling controller.

Increase airflow through the pack.

Shutoff the pack.

Correct! Wrong!

Why does the flight deck receive air from the left pack at a higher pressure than the passenger cabin?

To defog the forward windows.

To prevent smoke from entering the flight deck.

To cool the equipment in the aisle stand.

Correct! Wrong!

In the cabin altitude controller cruise mode, maximum cabin altitude is 8,000 feet. The cabin altitude controllers enter cabin altitude controller descent mode at T/D or at initial descent of approximately _____ from cruise altitude, regardless of T/D.

500 ft.

750 ft.

1000 ft.

1500 ft.

Correct! Wrong!

What protects the fuselage against excessive differential pressure?

Cabin altitude limiter.

Positive and negative pressure relief valves.

Recirculation fans.

Trim air valves

Correct! Wrong!

During normal bleed air operation, what position should the L, C, R ISLN BLEED AIR switches be in?

ON.

AUTO.

OFF.

L ISLN AUTO, R ISLN AUTO, C ISLN OFF.

Correct! Wrong!

What is the indication that an outflow valve is in manual control?

Green light on the outflow valve.

Amber 'M' on the outflow valve indications.

Red light on the air synoptic.

No indication. Manual control is not displayed.

Correct! Wrong!

What is the function of the negative pressure relief vents?

They minimize cabin overpressure conditions.

They regulate cabin pressure during climb.

They prevent negative pressure differential.

They improve smoke removal ventilation.

Correct! Wrong!

When does the ground crew call horn sound?

When cooling of forward electronic electrical equipment is inoperative.

When hydraulics systems are pressurized.

In case of APU fire.

Before starting the engine.

Correct! Wrong!

If one pack is in standby cooling and the other pack is operating normally, the pack in standby cooling mode shuts down at lower altitudes and higher outside air temperatures when ambient conditions do not permit standby cooling.

False.

True.

Correct! Wrong!

When is the center bleed isolation valve open?

During climb and descent.

During engine start.

During single bleed source operation.

During descent.

Correct! Wrong!

What happens if the FLT DECK TEMP control is moved to the 'C' position?

The pack temperature decreases.

It closes the trim air valve and lowers the flight deck temperature.

It opens the flight deck trim air valve.

It cancels input to the flight deck temperature controller.

Correct! Wrong!

How does the trim air system meet zone temperature requirements?

It cools conditioned air.

It cools or heats conditioned air.

It controls pack air temperature.

It heats conditioned air.

Correct! Wrong!

What is the normal position of the forward outflow valve after landing?

Full open.

30 degrees open.

In transit.

Full closed.

Correct! Wrong!

The controller uses ambient pressure and flight plan data from the FMC to calculate a cabin pressurization schedule. The schedule provides a comfortable cabin climb to cruise altitude.

True.

False.

Correct! Wrong!

Which of the following is false for the PACK Switch illuminating OFF?

Bleed air pressure is inadequate.

The pack valve is failed or closed.

A pack or compressor outlet high temperature has occurred.

The PACK switched is pushed on.

Correct! Wrong!

In flight, the normal source of bleed air for all systems except the engine anti-ice is the engine low stage compressor (at high power) or intermediate stage compressor (at low power).

True.

False.

Correct! Wrong!

With the CARGO TEMPERATURE selector set to LOW or HIGH, the respective cargo heat shutoff valve opens and the temperature control valve opens and closes to maintain the temperature in the compartment.

The lavatory/galley vent fans draw air across temperature sensors in each compartment. If both vent fans fail, cargo heat is not provided.

The lavatory/galley vent fans draw air across temperature sensors in each compartment.

The lavatory vent fans draw air across temperature sensors in each compartment. If both vent fans fail, cargo heat is still provided but at a low rate.

Correct! Wrong!

Boeing B777 – Air Systems

Boeing B777 – Air Systems

After engine start, what is the correct position for the L ENG and R ENG BLEED AIR switches?

Why should you minimize flight time at low altitude when the EQUIP COOLING OVRD message is displayed?

Where is the target temperature for the air conditioning zones displayed?

How are zone target temperatures selected, and what is the temperature range?

What cabin differential pressure is scheduled for takeoff?

What is the most correct statement about the equipment cooling override mode?

When is the pack OFF light illuminated amber?

Which of the followings are bleed air sources?

What is the cabin altitude at maximum certified airplane operating altitude?

What is the normal source of bleed air to start the second engine?

If an overheat or other significant pack fault is detected, the pack shuts down automatically. An attempt to restore pack operation may not be made by pressing the AIR COND RESET switch.

What will cause the automatic closure of a bleed valve?

During preflight, what position should the APU BLEED AIR switch be in?

If cruise altitude is unavailable from the FMC in AUTO, the cabin altitude controllers assume a cruise altitude of:

What happens when you select the FWR CARGO A/C control to AUTO?

The cabin altitude limiter closes both outflow valves if cabin altitude exceeds:

What is bleed air used for?

What happens when the BULK CARGO TEMPERATURE selector is positioned to HIGH?

The aft and bulk cargo compartments have independent bleed air heating systems. An insulated curtain separates the two compartments.

What determines the pack outlet temperature?

Which of the following are landing elevation limits for B777?

Where does air to the cabin come from, and what are the additional sources?

Why should the CABIN TEMP control be set to mid position?

Which system(s) supply trim air to the flight deck?

What is the source of supplemental heat for the aft cargo compartment?

Whic trim air valve can be moved directly by the flight crew, and how is it monitored?

Automatic ventilation of the Forward Cargo Compartment Air Conditioning System ensures that smoke and objectionable odors do not enter the flight deck or passenger cabin.

Each trim air system supplies three zone supply ducts, with the left trim air system also supplying the flight deck.

Which component can be reset by the air conditioning reset switch.

What does the PACK MODE R EICAS message indicate?

How are cargo compartments controlled in terms of temperature ranges?

What happens if the forward equipment cooling primary supply fan fails?

When does a visible orange lip indicate on a pressure relief valve?

If a duct leak is detected, the system automatically isolates the leak. The EICAS caution message BLEED LEAK is displayed. The automatic isolation logic may include:

During preflight, what position should the FWD and AFT OUTFLOW VALVE switches and LDG ALT selector be in?

If a pack overheats or fails the pack shuts down and an air conditioning may be needed.

What must be done to manually set a landing altitude?

In flight, the cabin altitude controller operates in:

For Boeing 777, the APU Bleed Air is available at all altitudes.

If landing altitude is unavailable from the FMC (and not set in MAN), the EICAS advisory message LANDING ALT is displayed. The cabin altitude controller:

What landing altitude is displayed on the EICAS pressurization system indications when the airplane has traveled more than 400 miles or has passed the halfway point?

If the cruise altitude is unavailable from the FMC in AUTO, the cabin altitude controllers assume a cruise altitude of 39,000 feet.

Forward Equipment Cooling system does not reconfigure automatically to override mode automatically for which of the following?

The LANDING ALTITUDE advisory message indicates which of the following?

What action is required during preflight if the LANDING ALTITUDE EICAS message is displayed with the FWD and AFT OUTFLOW VALVE switches in AUTO?

Landing altitude (normally provided by the FMC) can be manually set using the LANDING ALTITUDE selector. Landing field selection limits are _____ below sea level to _____ feet above sea level.

What causes the trim air FAULT light to come on?

Two outflow valves are installed: one forward and one aft. Normally, most of the outflow is through the forward outflow valve.

What does the MAN position on the FLT DECK TEMP control do?

Flight Deck Temperature (FLT DECK TEMP) selector in mid position sets the temperature to approximately 75°F (24°C)

Why should you minimize flight time at low altitude when the EQUIP COOLING OVRD message is displayed?

How many packs are there and what is their main function?

What system provides the heat for the forward cargo compartment?

During climb, what parameter(s) schedule cabin altitude?

In the standby cooling mode, what will the pack automatically do if the airplane is not in an area of sufficient cooling?

Why does the flight deck receive air from the left pack at a higher pressure than the passenger cabin?

In the cabin altitude controller cruise mode, maximum cabin altitude is 8,000 feet. The cabin altitude controllers enter cabin altitude controller descent mode at T/D or at initial descent of approximately _____ from cruise altitude, regardless of T/D.

What protects the fuselage against excessive differential pressure?

During normal bleed air operation, what position should the L, C, R ISLN BLEED AIR switches be in?

What is the indication that an outflow valve is in manual control?

What is the function of the negative pressure relief vents?

When does the ground crew call horn sound?

If one pack is in standby cooling and the other pack is operating normally, the pack in standby cooling mode shuts down at lower altitudes and higher outside air temperatures when ambient conditions do not permit standby cooling.

When is the center bleed isolation valve open?

What happens if the FLT DECK TEMP control is moved to the 'C' position?

How does the trim air system meet zone temperature requirements?

What is the normal position of the forward outflow valve after landing?

The controller uses ambient pressure and flight plan data from the FMC to calculate a cabin pressurization schedule. The schedule provides a comfortable cabin climb to cruise altitude.

Which of the following is false for the PACK Switch illuminating OFF?

In flight, the normal source of bleed air for all systems except the engine anti-ice is the engine low stage compressor (at high power) or intermediate stage compressor (at low power).

With the CARGO TEMPERATURE selector set to LOW or HIGH, the respective cargo heat shutoff valve opens and the temperature control valve opens and closes to maintain the temperature in the compartment.

Landing altitude (normally provided by the FMC) can be manually set using the LANDING ALTITUDE selector. Landing field selection limits are _ below sea level to _ feet above sea level.