B777 Air Systems

Boeing 777 Air Systems

Boeing 777 Air Systems Revised 10/7/24

1 / 15

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

The departure airport altitude to the nearest 100 feet.

The destination airport altitude to the nearest 500 feet.

The destination airport altitude to the nearest 100 feet.

The alternate airport altitude to the nearest 50 feet.

2 / 15

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.

The pack temperature decreases.

It opens the flight deck trim air valve.

3 / 15

When does the ground crew call horn sound?

In case of APU fire.

When cooling of forward electronic/electrical equipment is inoperative.

Before starting engines.

When hydraulics are pressurized.

4 / 15

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

8,000 feet.

7,400 feet.

9,400 feet

9,000 feet.

5 / 15

Which statement(s) is (are) correct about the equipment cooling override mode?

The EICAS message EQUIP COOLING OVRD is displayed.

All of the above is correct.

There is a non normal procedure for this message.

The mode is selected automatically.

6 / 15

Under normal conditions, what is the source of bleed air to start the second engine?

Validate

Engine.

APU

Ground carts.

7 / 15

How are cargo compartments controlled in terms of temperature ranges?

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

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

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

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

8 / 15

The LANDING ALTITUDE advisory message indicates which of the following?

The preset landing altitude is not correct.

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

A landing was made to different altitude.

9 / 15

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.

10 / 15

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 pulled out.

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

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

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

11 / 15

What will cause the automatic closure of a bleed valve?

Engine fire switch pulled.

Bleed air overtemp or overpressure.

APU operation

Ground cart supplying bleed air.

12 / 15

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.

13 / 15

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 and there is a non normal procedure to be performed.

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

14 / 15

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

True.

False.

15 / 15

What protects the fuselage against excessive differential pressure?

Positive and negative pressure relief valves.

Cabin altitude limiter.

Trim air valves

Recirculation fans.

Your score is

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