Boeing B777 - Flight controls

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

The green band and the pointer are not displayed

The CDU displays the VERIFY TRIM message in the scratchpad

The EICAS message STAB GREENBAND displays

The green band on the indicator turns amber

Correct! Wrong!

Which one of the following statements is incorrect?

The spoilers augment roll control.

Spoilers 4 and 11 are mechanically operated.

Spoilers 5 and 10 are available as ground spoilers only.

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

Correct! Wrong!

Which of these flight control surfaces aid in roll control?

Slats and spoilers only.

Flaperons and slats.

Ailerons, flaperons and spoilers.

Krueger flaps, slats and spoilers.

Correct! Wrong!

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

Ailerons, flaperons and spoilers.

Ailerons, flaperons and slats.

Ailerons, flaperons and elevators.

Ailerons, flaperons and flaps.

Correct! Wrong!

What principle is used when direct mode is in use?

Hydraulic signal modulation.

Electric signals.

Direct control surface deflection.

Mechanical linkage.

Correct! Wrong!

When do the alternate pitch trim levers move the stabilizer?

During flight control secondary and direct modes.

Only on the ground.

The levers move the stabilizer directly at all times.

When the autopilot is disengaged.

Correct! Wrong!

What happens if uncommanded stabilizer motion is sensed?

Power to all STCMs is shut off.

The stabilizer is locked in place.

The A/P engages automatically.

Power to the affected STCM is shut off.

Correct! Wrong!

What is the correct statement?

Aileron trim in inhibited when the autopilot is engaged.

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

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

All statements are correct.

Correct! Wrong!

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

Autopilot and envelope are NOT available.

Envelope protection features are available.

The Primary Flight Computers (PFCs) are NOT available.

Actuator Control Electronics (ACES) are NOT available.

Correct! Wrong!

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

Krueger flaps and slats.

Slats only.

Flaperons.

Flaperons and slats.

Correct! Wrong!

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

Connects hydraulic supply to STCM.

Disconnects hydraulic supply to STCM.

Disable direct rudder control.

Engages gust suppression.

Correct! Wrong!

Which one of the following statements is false?

When augmenting roll control, the spoilers work asymmetrically.

Spoilers 4 and 11 are mechanically operated.

There are 12 spoilers.

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

Correct! Wrong!

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

The system operates in direct mode

Autopilot is not available.

All statements are correct.

Protection features are NOT available.

Correct! Wrong!

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

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

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

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

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

Correct! Wrong!

What is FALSE about Flap/Slat Load Relief?

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

Re-extension is limited to the commended flap position.

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.

Correct! Wrong!

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

220 knot.

210 knot.

180 knot.

200 knot.

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!

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!

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.

All statements are correct.

The stabilizer position indicator is unreliable.

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.

The autopilot is available.

Actuator Control Electronics (ACES) are NOT available.

Envelope protection features are NOT available.

Correct! Wrong!

Which of these flight control surfaces assist in roll control?

Flaperons and slats.

Slats and spoilers.

Slats only.

Ailerons and flaperons.

Correct! Wrong!

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

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

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

Stabilizer asymmetry compensation is inoperative.

The centre stabilizer control path is inoperative

Correct! Wrong!

Which of the following is not a stall protection feature?

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

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

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

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

Correct! Wrong!

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?

9.5 degrees.

8 degrees.

7.5 degrees.

13 degrees.

Correct! Wrong!

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

Actuator Control Electronics (ACES).

Primary Flight Computers (PFCs).

Electro hydraulic servos.

Secondary FCC.

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 disconnects.

The auto-throttle advances to maintain minimum airspeed.

Correct! Wrong!

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

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

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

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

Speedbrake is UP after landing.

Correct! Wrong!

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

Electric.

Pneumatic.

Hydraulic.

Mechanical.

Correct! Wrong!

When does TAC automatically add rudder to minimize yaw?

When an engine is at idle thrust.

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

When the engine is damaged or surges.

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

Correct! Wrong!

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

Spoilers 1-7

Spoilers 5,10

None. Speedbrakes are disabled.

Spoilers 4,11

Correct! Wrong!

Under what conditions does the SPEEDBRAKE EXTENDED EICAS message display?

After landing, if speed-brakes fail to extend.

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.

Correct! Wrong!

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

Only during approaches.

All the time.

During engine out go-arounds.

Only on the ground.

Correct! Wrong!

Are the PFCs and ACEs used in direct mode?

Both PFCs and ACEs

It is not possible.

Only ACEs

Only PFCs

Correct! Wrong!

Do the ailerons increase lift for takeoff?

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

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

Yes the ailerons move down with flaps 15 and 20.

No the ailerons are used only at high speed

Correct! Wrong!

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

Primary Flight Computers (PFCs).

Position feedback transducers.

Actuator Control Electronics (ACES).

Power Control Units (PCUs).

Correct! Wrong!

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

Thrust Asymmetry is NOT available.

All spoilers remain usable.

Envelope protection features are NOT available.

Autopilot and envelope protection are NOT available.

Correct! Wrong!

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

During flap extension or retraction

During speedbrake extension or retraction.

During airspeed changes.

All statements are correct.

Correct! Wrong!

When do the PFCs make self-test?

After hydraulic system depressurization.

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

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

After hydraulic system pressurization.

Correct! Wrong!

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

Spoilers 1 and 14.

Spoilers 5 and 10.

Spoilers 5 and 8.

Spoilers 4 and 11.

Correct! Wrong!

What is wheel to rudder cross-tie?

Ability to dampen Dutch roll with control wheel only.

Ability to override rudder inputs with the control wheel inputs.

Ability to control rudder trim with control wheel inputs.

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

Correct! Wrong!

What control do the flaperons and ailerons provide?

Yaw control assisted by the rudder.

Increased wing lift and decreased stall speed.

Roll control assisted by asymmetric spoilers.

Pitch control assisted by a movable horizontal stabilizer.

Correct! Wrong!

What can you say about the FLAPS DRIVE EICAS message?

The flaps will operate in secondary mode.

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

Arm the alternate system.

The EICAS flap indicator display turns magenta.

Correct! Wrong!

Which statement is NOT true regarding the flap position indicator?

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

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

The flap position indicator is on the PFD.

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

Correct! Wrong!

What does the EICAS message FLIGHT CONTROL MODE indicate?

Flight control system faults are detected.

Multiple flight control surfaces are inoperative.

The Flap/Slat electronics units are inoperative.

Flight control system is operating in the secondary mode.

Correct! Wrong!

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

Take-off, rejected take-off and landing.

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

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

Take-off, rejected take-off and approach.

Correct! Wrong!

What is true about turn compensation?

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

The turn compensation switch is on the overhead panel.

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

It is available only in the secondary mode.

Correct! Wrong!

How many spoiler panels are used as speedbrakes?

A total of 14 spoiler panels.

A total of 8 spoiler panels.

A total of 10 spoiler panels.

A total of 12 spoiler panels.

Correct! Wrong!

What is FALSE about stabilizer trim?

As airspeed increases, trim rate decreases.

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

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

As airspeed increases, trim rate increases.

Correct! Wrong!

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

During airspeed changes only.

When the landing gear is extended.

For all configuration changes.

When thrust is changed.

Correct! Wrong!

What does stall warning consist of?

EICAS message 'STALL'.

Stick shaker but NO stall warning.

Stick shaker followed by stall warning.

Stall warning horn.

Correct! Wrong!

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

All flight control modes.

Direct.

Secondary.

Normal.

Correct! Wrong!

What does the PRI FLIGHT COMPUTERS EICAS message indicate?

The system is in the secondary mode.

Flight control modes are not affected.

The system is in direct mode

The system is in primary mode.

Correct! Wrong!

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

Always on EICAS

Only on the ground, on pitch trim indicators.

Only in flight, on control wheel.

Only during landing, on CDU.

Correct! Wrong!

Boeing B777 – Flight controls

Quiz

Boeing B777 - Flight controls

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

Which one of the following statements is incorrect?

Which of these flight control surfaces aid in roll control?

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

What principle is used when direct mode is in use?

When do the alternate pitch trim levers move the stabilizer?

What happens if uncommanded stabilizer motion is sensed?

What is the correct statement?

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

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

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

Which one of the following statements is false?

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

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

What is FALSE about Flap/Slat Load Relief?

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

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

Which trim control is inhibited when the autopilot is engaged?

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

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

Which of these flight control surfaces assist in roll control?

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

Which of the following is not a stall protection feature?

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?

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

Which of the following are NOT stall protection features?

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

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

When does TAC automatically add rudder to minimize yaw?

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

Under what conditions does the SPEEDBRAKE EXTENDED EICAS message display?

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

Are the PFCs and ACEs used in direct mode?

Do the ailerons increase lift for takeoff?

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

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

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

When do the PFCs make self-test?

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

What is wheel to rudder cross-tie?

What control do the flaperons and ailerons provide?

What can you say about the FLAPS DRIVE EICAS message?

Which statement is NOT true regarding the flap position indicator?

What does the EICAS message FLIGHT CONTROL MODE indicate?

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

What is true about turn compensation?

How many spoiler panels are used as speedbrakes?

What is FALSE about stabilizer trim?

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

What does stall warning consist of?

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

What does the PRI FLIGHT COMPUTERS EICAS message indicate?

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