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

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:

One or two sequential steps

One, two, or three sequential steps.

Betwwen one and four 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.

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

Recirculation fans may not cool equipment adequately.

AFT and BULK cargo compartments may overheat.

Equipment and displays could fail.

Pack temperature would cause damage.

Correct! Wrong!

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

37 000 ft.

35 000 ft.

39 000 ft.

33 000 ft.

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 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.

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

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

It cancels input to the flight deck temperature controller.

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

It opens the flight deck trim air valve.

The pack temperature decreases.

Correct! Wrong!

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

When the EQUIP COOLING switch is in OVRD.

When both supply fans fail in flight.

When the FWD CARGO FIRE ARM switch is ARMED.

When high air airflow is detected in flight.

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.

False.

True.

Correct! Wrong!

What determines the pack outlet temperature?

The flight deck temperature selector.

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

The CABIN TEMERATURE selector.

All statements are correct.

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 200 ft.

Assumes a landing altitude of 1000 ft.

Assumes a landing altitude of 1500 ft.

Correct! Wrong!

Which of the followings are bleed air sources?

Packs.

Trim air.

Demand pump.

APU and Ground Cart.

Correct! Wrong!

What causes the trim air FAULT light to come on?

The pack flow control valves are commanded closed.

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

All statements are correct.

The trim air valve is commanded open

Correct! Wrong!

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

OFF.

ON.

AUTO.

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

Correct! Wrong!

What system provides the heat for the forward cargo compartment?

Aft cargo heat system.

Exhaust from the equipment cooling system.

The trim air system.

Bleed air from the engines.

Correct! Wrong!

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

Left trim air valve - monitored through the engine display.

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.

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

It removes control at the cabin attendant panel.

It allows the trim air valve to operate manually.

It removes power from the trim air system.

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

Correct! Wrong!

What cabin differential pressure is scheduled for takeoff?

Equal to the outside pressure.

Slighlty negative.

Zero.

Slighlty positive.

Correct! Wrong!

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

The PACK switched is pushed on.

Bleed air pressure is inadequate.

A pack or compressor outlet high temperature has occurred.

The pack valve is failed or closed.

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.

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

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

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.

True.

False.

Correct! Wrong!

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

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

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

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

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

Correct! Wrong!

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

False.

True.

Correct! Wrong!

What is bleed air used for?

Pressurizing the hydraulics reservoir and sspirating the TAT probe.

Aspirating the TAT probe.

Pressurizing the hydraulics reservoir.

Correct! Wrong!

How does the trim air system meet zone temperature requirements?

It heats conditioned air.

It controls pack air temperature.

It cools or heats conditioned air.

It cools conditioned air.

Correct! Wrong!

What is the function of the negative pressure relief vents?

They improve smoke removal ventilation.

They regulate cabin pressure during climb.

They minimize cabin overpressure conditions.

They prevent negative pressure differential.

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.

True.

False.

Correct! Wrong!

Which of the following are landing elevation limits for B777?

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.

1000 feet below to 14000 feet above sea level.

Correct! Wrong!

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

A constant pressure differential.

Airplane flight altitude and pressure altitude.

Airplane flight altitude.

Airplane climb rate and flight plan cruise altitude.

Correct! Wrong!

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

Ground cart(s)

Engine.

APU.

Correct! Wrong!

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

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

To prevent cabin overheat during low altitude flight

To set the maximum temperature in any zone.

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

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.

False.

True.

Correct! Wrong!

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

True.

False.

Correct! Wrong!

In flight, the cabin altitude controller operates in:

A descent mode.

All statements are correct.

A cruise mode.

A climb mode.

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!

The LANDING ALTITUDE advisory message indicates which of the following?

A landing was made to different altitude.

The preset landing altitude is not correct.

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

Correct! Wrong!

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

Left trim air system.

Center trim air system.

Right trim air system.

Both right and left trim air systems.

Correct! Wrong!

When does the ground crew call horn sound?

Before starting the engine.

In case of APU fire.

When cooling of forward electronic electrical equipment is inoperative.

When hydraulics systems are pressurized.

Correct! Wrong!

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

On the HYD synoptic.

On the air synoptic.

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

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

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.

750 ft.

1500 ft.

500 ft.

1000 ft.

Correct! Wrong!

What will cause the automatic closure of a bleed valve?

APU operation

Ground cart supplying bleed air.

Engine fire switch pulled.

Bleed air overtemp or overpressure.

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

The mode is selected automatically.

Correct! Wrong!

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

False.

True

Correct! Wrong!

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

The forward system reconfigures automatically to an override mode.

The EICAS advisory message EQUIP COOLING is displayed.

The aft equipment cooling and ventilating system provides cooling.

The backup supply fan operates automatically.

Correct! Wrong!

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

Position the landing altitude switch to AUTO.

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

Set cabin altitude to less than 8000 ft.

Advise maintenance of the open valve.

Correct! Wrong!

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

Amber 'M' on the outflow valve indications.

Red light on the air synoptic.

Green light on the outflow valve.

No indication. Manual control is not displayed.

Correct! Wrong!

What does the PACK MODE R EICAS message indicate?

The right pack is inoperative.

The right pack is operating in the standby cooling mode.

The standby cooling mode is inoperative

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

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 departure airport altitude to the nearest 100 feet.

The destination airport altitude to the nearest 100 feet.

The destination airport altitude to the nearest 500 feet.

The alternate airport altitude to the nearest 50 feet.

Correct! Wrong!

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

Packs operate at reduced flow rate.

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

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.

Correct! Wrong!

When is the pack OFF light illuminated amber?

When the valve ıs failed closed.

During engine start.

All statements are true.

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

Correct! Wrong!

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

False.

True.

Correct! Wrong!

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

9400 feet.

9000 feet.

7400 feet.

8000 feet.

Correct! Wrong!

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

Shutoff the pack.

Increase airflow through the pack.

Decrease airflow to half rate.

Fail the pack standby cooling controller.

Correct! Wrong!

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

Forward equipment cooling exhaust air.

An electric heater.

Left recirculation fan.

An independent bleed air heating system.

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).

False.

True.

Correct! Wrong!

How are cargo compartments controlled in terms of temperature ranges?

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 4°C to 10°C - High is 18°C to 24°C

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

Correct! Wrong!

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

Electronic Equipment and displays may fail.

Recirculation fans may not cool equipment adequately.

AFT and BULK cargo compartments may overheat.

Pack temperature would cause damage.

Correct! Wrong!

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

Both packs - upper and lower recirculation systems.

Left pack - upper recirculation system.

Right pack - lower recirculation system.

APU bleed air - outflow valves.

Correct! Wrong!

What protects the fuselage against excessive differential pressure?

Trim air valves

Cabin altitude limiter.

Positive and negative pressure relief valves.

Recirculation fans.

Correct! Wrong!

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

OFF.

AUTO.

AUTO or OFF

Correct! Wrong!

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

Packs only.

Trim air valves and recirculation fans.

Reciculation fan switches only.

The entire air conditioning system.

Correct! Wrong!

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

False.

True.

Correct! Wrong!

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

Full closed.

30 degrees open.

Full open.

In transit.

Correct! Wrong!

When is the center bleed isolation valve open?

During engine start.

During single bleed source operation.

During climb and descent.

During descent.

Correct! Wrong!

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

Four packs - controlling pressurization.

Three packs - providing cooling.

Two packs - cooling supplied hot bleed air.

One pack - managing ventilation.

Correct! Wrong!

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

ON.

AUTO.

OFF.

Correct! Wrong!

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

To prevent smoke from entering the flight deck.

To defog the forward windows.

To cool the equipment in the aisle stand.

Correct! Wrong!

What must be done to manually set a landing altitude?

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

Check the FMC for automatic landing elevation adjustment.

Adjust the trim air valves to the desired altitude.

Press the AUTO button on the cabin altitude controller

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?

Select the FWD and AFT OUTFLOW valve switches to MAN.

Pull the LDG ALT

Push the LDG ALT selector OUT.

Push the LDG ALT selector IN.

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.

2000 ft and 14 000 ft.

1500 ft and 16 000 ft.

1000 ft and 15 000 ft.

1000 ft and 13 000 ft

Correct! Wrong!

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

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

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

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

The bulk cargo compartment ventilation fan operates continuously.

Correct! Wrong!

Boeing B777 – Air Systems

Boeing B777 – Air Systems

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:

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

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

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.

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

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

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

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.

What determines the pack outlet temperature?

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:

Which of the followings are bleed air sources?

What causes the trim air FAULT light to come on?

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

What system provides the heat for the forward cargo compartment?

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

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

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

What cabin differential pressure is scheduled for takeoff?

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

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

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.

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

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

What is bleed air used for?

How does the trim air system meet zone temperature requirements?

What is the function of the negative pressure relief vents?

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.

Which of the following are landing elevation limits for B777?

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

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

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

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

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

In flight, the cabin altitude controller operates in:

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.

The LANDING ALTITUDE advisory message indicates which of the following?

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

When does the ground crew call horn sound?

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

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 will cause the automatic closure of a bleed valve?

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

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

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

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

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

What does the PACK MODE R EICAS message indicate?

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?

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

When is the pack OFF light illuminated amber?

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

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

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

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

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).

How are cargo compartments controlled in terms of temperature ranges?

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

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

What protects the fuselage against excessive differential pressure?

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

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

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

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

When is the center bleed isolation valve open?

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

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

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

What must be done to manually set a landing altitude?

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

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.