Boeing B777 - Flight controls

A wheel to rudder cross-tie function provides the capability of being able to control the initial effects of an engine failure using control wheel inputs only. How many degrees of rudder deflection can be obtained from control wheel inputs?

13 degrees.

7.5 degrees.

8 degrees.

9.5 degrees.

Correct! Wrong!

Where - and when - is the stabilizer "green band" displayed?

Only in flight, on control wheel.

Only on the ground, on pitch trim indicators.

Always on EICAS

Only during landing, on CDU.

Correct! Wrong!

Automatic speed-brake operation is provided for which flight control system modes?

Secondary.

Direct.

Normal.

All flight control modes.

Correct! Wrong!

What is FALSE about Flap/Slat Load Relief?

When airspeed is reduced the flap automatically re-extend as airspeed allows.

The Flap lever does not move during flap condition and shows actual flap position.

Re-extension is limited to the commended flap position.

Flap load relief is available in the primary and secondary modes.

Correct! Wrong!

How many spoiler panels are used as speedbrakes?

A total of 8 spoiler panels.

A total of 10 spoiler panels.

A total of 12 spoiler panels.

A total of 14 spoiler panels.

Correct! Wrong!

Under what conditions does the SPEEDBRAKE EXTENDED EICAS message display?

Speedbrakes are extended and landing flaps are selected or RA is between 15 and 800 feet.

Speedbrakes are extended and the airplane is above 800 feet RA.

Any time speed-brakes are extended.

After landing, if speed-brakes fail to extend.

Correct! Wrong!

Which spoilers are available as speedbrakes (secondary and direct modes)?

Spoilers 1-7

Spoilers 4,11

Spoilers 5,10

None. Speedbrakes are disabled.

Correct! Wrong!

Are the PFCs and ACEs used in direct mode?

Only ACEs

It is not possible.

Both PFCs and ACEs

Only PFCs

Correct! Wrong!

Do the ailerons increase lift for takeoff?

No, the ailerons assist roll control only during high speed flight.

Yes the ailerons move down with flaps 5, 15 and 20.

Yes the ailerons move down with flaps 15 and 20.

No the ailerons are used only at high speed

Correct! Wrong!

When do the control wheel stabilizer trim switches control stabilizer movement directly?

Only during approaches.

Only on the ground.

All the time.

During engine out go-arounds.

Correct! Wrong!

What does stall warning consist of?

Stall warning horn.

EICAS message 'STALL'.

Stick shaker followed by stall warning.

Stick shaker but NO stall warning.

Correct! Wrong!

Which one of the following statements is false?

There are 12 spoilers.

When augmenting roll control, the spoilers work asymmetrically.

Spoilers 4 and 11 are mechanically operated.

At cruise speed, spoilers 5 and 10 are locked out.

Correct! Wrong!

Which of the following is true when the flight control system is operating in secondary mode?

The autopilot is available.

Envelope protection features are NOT available.

The Primary Flight Computers (PFCs) are NOT available.

Actuator Control Electronics (ACES) are NOT available.

Correct! Wrong!

What causes the SPEEDNRAKE EXTENDED message to display on the EICAS?

Speedbrake is down when either thrust lever is advanced to a takeoff position.

On the ground when either reverse thrust lever is moved to the reverse idle detent.

Speedbrake is UP after landing.

Speedbrake is extended when radio altitude is between 15 and 800 ft.

Correct! Wrong!

What is the effect of placing a stabilizer cutout switch to cutout?

Disconnects hydraulic supply to STCM.

Connects hydraulic supply to STCM.

Disable direct rudder control.

Engages gust suppression.

Correct! Wrong!

What are the initial steps to extend the flaps using the alternate flap system?

Arm ALT FLAPS ARM switch. Select ALT FLAPS selector to OFF.

Arm ALT FLAPS ARM switch. Select ALT FLAPS selector to EXT.

Arm ALT FLAPS ARM switch. Select NORMAL FLAPS selector to 20.

Push ALT FLAPS ARM switch. Select ALT FLAPS selector to EXT.

Correct! Wrong!

What happens when the stabilizer signal is not present or is invalid?

The green band on the indicator turns amber

The EICAS message STAB GREENBAND displays

The green band and the pointer are not displayed

The CDU displays the VERIFY TRIM message in the scratchpad

Correct! Wrong!

When does TAC automatically add rudder to minimize yaw?

When one engine differs by 10 present or more from the other engine.

When an engine is at idle thrust.

When the engine is damaged or surges.

When engine thrust loss is sensed in the normal and secondary mode.

Correct! Wrong!

What is the meaning of the EICAS advisory message STABILIZER CUTOUT?

One stabilizer cut-out switch is in the CUTOUT position.

Both stabilizer cut-out switches are in the CUTOUT position.

Stabilizer asymmetry compensation is inoperative.

The centre stabilizer control path is inoperative

Correct! Wrong!

Which statement is true when the primary flight computer disconnect switch is positioned to DISC?

Autopilot is not available.

The system operates in direct mode

All statements are correct.

Protection features are NOT available.

Correct! Wrong!

When are pitch trim changes required with the 777 'fly-by-wire' system?

During airspeed changes only.

For all configuration changes.

When the landing gear is extended.

When thrust is changed.

Correct! Wrong!

Which of these flight control surfaces droop when the trailing edge flaps extend?

Krueger flaps and slats.

Flaperons.

Flaperons and slats.

Slats only.

Correct! Wrong!

What power source is used for the actuation of all primary flight controls?

Mechanical.

Electric.

Pneumatic.

Hydraulic.

Correct! Wrong!

What is true about turn compensation?

It is not available if the bank angle is above 30 degrees.

It is available only in the secondary mode.

Elevator input is NOT required if the airplane is in a 30 degree bank.

The turn compensation switch is on the overhead panel.

Correct! Wrong!

When do the PFCs make self-test?

After hydraulic system depressurization.

After hydraulic system shutdown (HYD PRESS SYS L+C+R).

After the "PRIMARY FLIGHT COMPUTERS" EICAS message is displayed.

After hydraulic system pressurization.

Correct! Wrong!

Auto speed-brakes protection is provided for which phases of flight?

Take-off, rejected take-off and approach below 200 feet.

Take-off, rejected take-off and landing.

Take-off, rejected take-off, approach and landing.

Take-off, rejected take-off and approach.

Correct! Wrong!

Which trim control is inhibited when the autopilot is engaged?

Alternate control pitch trim.

Control wheel pitch trim switches.

Trim control pitch

Alternate pitch trim levers.

Correct! Wrong!

When do the alternate pitch trim levers move the stabilizer?

The levers move the stabilizer directly at all times.

During flight control secondary and direct modes.

When the autopilot is disengaged.

Only on the ground.

Correct! Wrong!

Which pair of spoilers is mechanically controlled through a cable from the control wheel?

Spoilers 4 and 11.

Spoilers 5 and 8.

Spoilers 5 and 10.

Spoilers 1 and 14.

Correct! Wrong!

What does the EICAS message FLIGHT CONTROL MODE indicate?

Flight control system faults are detected.

The Flap/Slat electronics units are inoperative.

Flight control system is operating in the secondary mode.

Multiple flight control surfaces are inoperative.

Correct! Wrong!

What is FALSE about stabilizer trim?

As airspeed increases, trim rate decreases.

The green band on the stabilizer position indicator shows the stabilizer trim range for take-off.

As airspeed increases, trim rate increases.

You can use the pitch trim switches on the yoke to set the trim.

Correct! Wrong!

In direct mode, which of the following components of fly-by-wire are NOT operating?

Primary Flight Computers (PFCs).

Actuator Control Electronics (ACES).

Position feedback transducers.

Power Control Units (PCUs).

Correct! Wrong!

Which of the following are NOT stall protection features?

In landing configuration, leading slats move to gapped position.

Stick shaker activates.

The auto-throttle advances to maintain minimum airspeed.

The auto-throttle disconnects.

Correct! Wrong!

What can you say about the FLAPS DRIVE EICAS message?

The message is displayed when the flap drive mechanism has been shut down due to an asymmetry.

The flaps will operate in secondary mode.

The EICAS flap indicator display turns magenta.

Arm the alternate system.

Correct! Wrong!

Which one of the following statements is incorrect?

Spoilers 5 and 10 are available as ground spoilers only.

Spoilers 4 and 11 are mechanically operated.

The spoilers augment roll control.

The extension of speed-brakes in the landing configuration is prohibited.

Correct! Wrong!

Which spoilers will be locked out in secondary and direct modes?

Spoilers 1 to 7

Spoilers 8 to 14

Spoilers 1 and 14

Spolers 5 and 10

Correct! Wrong!

In the normal mode, a control column input or trim change is required to maintain a constant flight path:

During speedbrake extension or retraction.

During flap extension or retraction

During airspeed changes.

All statements are correct.

Correct! Wrong!

Which of these flight control surfaces assist in roll control?

Ailerons and flaperons.

Slats and spoilers.

Flaperons and slats.

Slats only.

Correct! Wrong!

Which of the following is not correct concerning the flight control system when operating in secondary mode?

Autopilot and envelope protection are NOT available.

Thrust Asymmetry is NOT available.

Envelope protection features are NOT available.

All spoilers remain usable.

Correct! Wrong!

Which control surfaces are used for roll control on the B777?

Ailerons, flaperons and spoilers.

Ailerons, flaperons and elevators.

Ailerons, flaperons and slats.

Ailerons, flaperons and flaps.

Correct! Wrong!

What does the PRI FLIGHT COMPUTERS EICAS message indicate?

The system is in direct mode

Flight control modes are not affected.

The system is in the secondary mode.

The system is in primary mode.

Correct! Wrong!

What is the maximum speed of wheel to rudder cross-tie operation?

200 knot.

210 knot.

180 knot.

220 knot.

Correct! Wrong!

What is the correct statement?

Moving the alternate pitch trim levers during stall or overspeed protection does not move the stabilizer

Aileron trim in inhibited when the autopilot is engaged.

All statements are correct.

Moving the alternate pitch trim levers with the autopilot engaged does not move the stabilizer.

Correct! Wrong!

What happens if uncommanded stabilizer motion is sensed?

The A/P engages automatically.

Power to the affected STCM is shut off.

The stabilizer is locked in place.

Power to all STCMs is shut off.

Correct! Wrong!

Which of these flight control surfaces aid in roll control?

Flaperons and slats.

Slats and spoilers only.

Krueger flaps, slats and spoilers.

Ailerons, flaperons and spoilers.

Correct! Wrong!

Which of the following is true when the flight control system is operating in secondary mode?

The Primary Flight Computers (PFCs) are NOT available.

Autopilot and envelope are NOT available.

Actuator Control Electronics (ACES) are NOT available.

Envelope protection features are available.

Correct! Wrong!

What could cause the STAB GREENBAND EICAS message to be displayed?

Power to the stabilizer position indicator is lost.

The FMC weight entry and CG may be incorrect.

The stabilizer position indicator is unreliable.

All statements are correct.

Correct! Wrong!

In direct mode, which of the following components of the primary flight control system are NOT operating?

Electro hydraulic servos.

Actuator Control Electronics (ACES).

Secondary FCC.

Primary Flight Computers (PFCs).

Correct! Wrong!

Which statement is NOT true regarding the flap position indicator?

The flap position indicator is magenta when slats and flaps are in transit.

The flap position indicator appears on EICAS when flaps begin to extend.

There are three different displays: Primary, Secondary and Alternate.

The flap position indicator is on the PFD.

Correct! Wrong!

Which of the following is not a stall protection feature?

The out-of-trim forces increase above normal for a condition above the minimum manoeuvre speed.

Use of alternate pitch trim levers reduces the column forces below the minimum manoeuvring speed.

Stab trim is inhibited in the nose up direction at approximately the minimum manoeuvring speed.

The pilot must apply continuous aft column force to maintain airspeed below the manoeuvring speed.

Correct! Wrong!

What principle is used when direct mode is in use?

Mechanical linkage.

Electric signals.

Direct control surface deflection.

Hydraulic signal modulation.

Correct! Wrong!

What control do the flaperons and ailerons provide?

Roll control assisted by asymmetric spoilers.

Increased wing lift and decreased stall speed.

Yaw control assisted by the rudder.

Pitch control assisted by a movable horizontal stabilizer.

Correct! Wrong!

What is wheel to rudder cross-tie?

Ability to override rudder inputs with the control wheel inputs.

Ability to control rudder trim with control wheel inputs.

Ability to dampen Dutch roll with control wheel only.

Ability to control initial effects of an engine failure with control wheel only.

Correct! Wrong!

Boeing B777 – Flight controls

Quiz

Boeing B777 - Flight controls

A wheel to rudder cross-tie function provides the capability of being able to control the initial effects of an engine failure using control wheel inputs only. How many degrees of rudder deflection can be obtained from control wheel inputs?

Where - and when - is the stabilizer "green band" displayed?

Automatic speed-brake operation is provided for which flight control system modes?

What is FALSE about Flap/Slat Load Relief?

How many spoiler panels are used as speedbrakes?

Under what conditions does the SPEEDBRAKE EXTENDED EICAS message display?

Which spoilers are available as speedbrakes (secondary and direct modes)?

Are the PFCs and ACEs used in direct mode?

Do the ailerons increase lift for takeoff?

When do the control wheel stabilizer trim switches control stabilizer movement directly?

What does stall warning consist of?

Which one of the following statements is false?

Which of the following is true when the flight control system is operating in secondary mode?

What causes the SPEEDNRAKE EXTENDED message to display on the EICAS?

What is the effect of placing a stabilizer cutout switch to cutout?

What are the initial steps to extend the flaps using the alternate flap system?

What happens when the stabilizer signal is not present or is invalid?

When does TAC automatically add rudder to minimize yaw?

What is the meaning of the EICAS advisory message STABILIZER CUTOUT?

Which statement is true when the primary flight computer disconnect switch is positioned to DISC?

When are pitch trim changes required with the 777 'fly-by-wire' system?

Which of these flight control surfaces droop when the trailing edge flaps extend?

What power source is used for the actuation of all primary flight controls?

What is true about turn compensation?

When do the PFCs make self-test?

Auto speed-brakes protection is provided for which phases of flight?

Which trim control is inhibited when the autopilot is engaged?

When do the alternate pitch trim levers move the stabilizer?

Which pair of spoilers is mechanically controlled through a cable from the control wheel?

What does the EICAS message FLIGHT CONTROL MODE indicate?

What is FALSE about stabilizer trim?

In direct mode, which of the following components of fly-by-wire are NOT operating?

Which of the following are NOT stall protection features?

What can you say about the FLAPS DRIVE EICAS message?

Which one of the following statements is incorrect?

Which spoilers will be locked out in secondary and direct modes?

In the normal mode, a control column input or trim change is required to maintain a constant flight path:

Which of these flight control surfaces assist in roll control?

Which of the following is not correct concerning the flight control system when operating in secondary mode?

Which control surfaces are used for roll control on the B777?

What does the PRI FLIGHT COMPUTERS EICAS message indicate?

What is the maximum speed of wheel to rudder cross-tie operation?

What is the correct statement?

What happens if uncommanded stabilizer motion is sensed?

Which of these flight control surfaces aid in roll control?

Which of the following is true when the flight control system is operating in secondary mode?

What could cause the STAB GREENBAND EICAS message to be displayed?

In direct mode, which of the following components of the primary flight control system are NOT operating?

Which statement is NOT true regarding the flap position indicator?

Which of the following is not a stall protection feature?

What principle is used when direct mode is in use?

What control do the flaperons and ailerons provide?

What is wheel to rudder cross-tie?