Boeing B737 MAX - Flight controls

The Flap/Slat Electronics Unit (FSEU) provides:

All statements are correct.

Uncommanded motion protection for LE devices and TE flaps.

TE asymetry protection by removing hydraulic pressure to the TE flaps if an asymetry is detected

LE skew detection for slats 2 through 7 except during autoslat operation

Correct! Wrong!

The number of slats located on each wing are:

Correct! Wrong!

The Power Transfer Unit provides an alternate source of power for the Autoslat System if:

Hydraulic System A engine driven pump is inoperative

A loss of Hydraulic System A pressure is sensed

The Alternate Flaps Position Switch is momentarily held down

A loss of pressure from the Hydraulic System B engine pump is sensed.

Correct! Wrong!

During the ALTERNATE FLAPS OPERATION procedure, the flight crew should plan a Flaps 15 landing. After arming the ALTERNATE FLAPS MASTER SWITCH (230 kt max), the flight crew set the flaps to desired flap position and extend flaps on maneuvering speed schedule. The LE FLAPS TRANSIT light will remain illuminates until the flaps approach the:

Flaps 1 position.

Flaps 15 position.

Flaps 10 position.

Flaps 5 position.

Correct! Wrong!

The flap load relief system is operational at:

Flaps 40 only.

Flaps 15, 30 & 40.

Flaps 30 & 40.

All flap settings.

Correct! Wrong!

During a normal landing, flight spoilers & ground spoilers will always extend simultaneously.

False.

True

Correct! Wrong!

The speedbrake lever will move forward and all spoilers will retract if either thrust lever is advanced after landing.

False.

True.

Correct! Wrong!

The ALTERNATE FLAPS Master Switch:

Activates the Standby Hydraulic Pump and pressurizes the STANDBY Rudder Power Control Unit.

Fully extends the LE Devices using Standby Hydraulic pressure, and electrically extends the TE Flaps

Arms the Alternate Flaps Position Switch, activates the Standby Hydraulic Pump, and closes the Trailing.

Closes the Flight Spoiler Shutoff valve

Correct! Wrong!

Mach Trim system corrects for Mach tuck by moving stabilizer up.

True.

False.

Correct! Wrong!

It moves elevators up (not the stabilizer)

Landing flap 40 selected and in position. An IAS of 178kts is flown due to a highwind gust. Would you expect:

Flaps to retract to 25.

Flaps to retract to 30.

Flaps to remain in the current configuration.

Flaps to retract to 15.

Correct! Wrong!

! When the flaps are set at 40, the TE flaps:- retract to 30 if airspeed exceeds 163 knots- re-extend when airspeed is reduced below 158 knots.When the flaps are set at 30, the TE flaps:- retract to 25 if the airspeed exceeds 176 knots- re-extend when airspeed is reduced below 171 knots.

The flight control computers use Mach Information from the _____ to compute a Mach trim actuator position.

Airspeed Indicator and any thrust lever position.

ADIRU.

Airspeed Indicator.

Mach/Airspeed Indicator and thrust levers position.

Correct! Wrong!

The Autoslat system:

Drives the slats to FULL EXTEND when TE Flaps 1 through 5 are selected and the airplane approaches a stall

Is normally powered by Transfer Bus No.2.

Is normally powered by Hydraulic System A.

Provides for slat deployment above VMO/MMO.

Correct! Wrong!

During an ALL FLAPS UP LANDING, the speed to be maintained is:

VREF40 + 60

VREF40 + 15

VREF40 + 30

VREF40 + 55

Correct! Wrong!

The elevator transfer mechanism allows:

Forces from either control column to be transferred to the stabilizer.

The elevator feel & centering unit to transfer proper aerodynamic forces to the control columns

The control column to be physically separated in the event of an elevator jam.

The elevator feel and centering unit to transfer the source of power for elevator actuators to hydraulic systems A or B, depending upon which is producing higher pressure.

Correct! Wrong!

The Speed Trim System (STS) operates most frequently during takeoffs & go-arounds. Conditions for speed trim operation are:

Airspeed between 100 KIAS and Mach 0.68, 10 seconds after takeoff, 5 seconds following release of trim switches, N1 above 60%, autopilot not engaged, sensing of trim requirement.

Airspeed between 100 KIAS and Mach 0.68, 10 seconds after takeoff, 5 seconds following release of trim switches, N1 above 40%, autopilot not engaged, sensing of trim requirement.

Airspeed between 100 KIAS and Mach 0.68, 15 seconds after takeoff, 5 seconds following release of trim switches, N1 above 60%, sensing of trim requirement.

Airspeed between 100 KIAS and Mach 0.68, 10 seconds after takeoff, 5 seconds following release of trim switches, N1 above 40%, sensing of trim requirement.

Correct! Wrong!

If the difference in AoAs exceeds 5.5 degrees, what will happen?

The MCAS and STS functions will be disabled for the remainder of the flight and SPEED TRIM FAIL will illuminate immediately

The MCAS and STS functions will be disabled for the remainder of the flight and SPEED TRIM FAIL will illuminate on recall

The MCAS and STS functions will be disabled for the remainder of the flight and SPEED TRIM FAIL will illuminate when on ground and below 30 knots

Correct! Wrong!

The trailing edge flaps are at 15 units. The correct indication on the aft overhead panel for the leading edge devices is:

All LE devices EXT lights illuminated

All LE devices FULL EXT lights illuminated

LE slats EXT lights and LE flaps FULL EXT lights illuminated.

All amber TRANSIT lights illuminated

Correct! Wrong!

Main electric trim has 2 speed modes : high & low speed.

True.

Correct! Wrong!

The SPEED BRAKE DO NOT ARM light indicates that the speedbrake is not usable.

False

True

Correct! Wrong!

The Speed Trim System (STS) is a speed stability augmentation system designed to improve flight characteristics during operation with a low gross weight, aft center of gravity and high thrust when the autopilot is not engaged.

False

True

Correct! Wrong!

The STS monitors inputs of stabilizer position, thrust lever position, airspeed and vertical speed and then trims the stabilizer using the autopilot stabilizer trim.Remember that the SPEED TRIM FAIL amber light is often illuminated when you arrive at the aircraft. It is only due to the Inertial Vertical Speed Indicator which is not powered by the ADIRUs (IRS selectors OFF): the STS receives invalid inputs.

Why are mechanical gates installed on the flap selector unit?

Prevent flap movement to UP position

To prevent inadvertent flap lever movement beyond F1 and F15 during G/A

To hinder flap movement beyond F15 until gear down is selected.

Prevent flap movement to UP position when speed is too low.

Correct! Wrong!

The amber ASSIST ON light indicates:

The elevator jam landing asist system is active.

The elevator jam landing asist system is active and flight spoilers must not be used.

The elevator jam landing asist system is active and flight spoilers are extended.

Correct! Wrong!

With a loss of both system A & B, the elevator FEEL DIFF PRESS light will illuminate.

False.

True.

Correct! Wrong!

The amber LE FLAPS TRANSIT light:

Indicates LE Slats are fully extended

Provides TE Flaps asymetry protection.

Indicates all LE Devices are fully extended

Is inhibited during Autoslat operation inflight

Correct! Wrong!

The FEEL DIFF PRESS light indicates:

An excessive differential pressure in the elevator feel computer.

A data loss in the elevator feel computer.

A loss of pressure in the elvator feel computer.

An excessive temperature in the elevator feel computer

Correct! Wrong!

Excessive differential pressure can be caused by erroneous activation of the Elevator Feel Shift module.

Loss of Hydraulic System B pressure does not cause illumination of the amber YAW DAMPER light or yaw damper disengagement.

True.

False.

Correct! Wrong!

The amber SPOLIERS light is located on the bottom right of the Flight Control Panel and indicates:

It indicates a spoiler fault as sensed by the SCE unit, and that speedbrake must not be used.

It indicates a spoiler fault as sensed by the SCE unit, and that one or more spoiler pairs are inoperative.

It indicates a spoiler fault as sensed by the SCE unit, and that spoilers are inoperative.

Correct! Wrong!

If the SPEEDBRAKES EXTENDED light is illuminated in flight. It indicates:

The speed brake lever is beyond the ARMED position with either the TE flaps extended more than Flaps 10 or the Radio altitude is less than 800 ft.

The speed brake lever is beyond the ARMED position with either the TE flaps extended more than Flaps 15 or the Radio altitude is less than 2500 ft.

The speed brake lever is beyond the ARMED position with either the TE flaps extended more than Flaps 1 or the Radio altitude is less than 800 ft.

The speed brake lever is beyond the ARMED position with either the TE flaps extended more than Flaps 5 or the Radio altitude is less than 500 ft.

Correct! Wrong!

The trailing edge flaps devices consist of double slotted flaps inboard outboard of each engine.

True

False

Correct! Wrong!

During flight with both hydraulic systems A & B inoperative:

Trim is available for the stabilizer and rudder only. Aileron trim is inoperative with the autopilots disengaged.

The standby hydraulic system operates the trailing edge flaps normally

The autoslat system is still functional through the operation of the PTU

The standby hydraulic system operates the flaps flaps system normally

Correct! Wrong!

Emergency Descent Speedbrakes are armed when is above 30,000 ft and:

the cabin altitude warning is active.

the cabin altitude is above 14,000ft.

the flight spoilers are used.

Correct! Wrong!

Elevator system feel is provided by the elevator feel computer. This computer receives inputs of:

Altitude & elevator position

Only System A hydraulic pressure

Elevator balance tabs position

Airspeed & stabilzer position.

Correct! Wrong!

With the loss of hydraulic system B, (system A operating normally):

Main yaw damper functions are available as long as hydraulic system A is providing normal pressure and the yaw damper switch is ON.

Standby yaw damper functions are available if the FLT CONTROL B switch is placed to STBY RUD and the YAW DAMPER switch is reset to ON.

Standby yaw damper functions are available as long as hydraulic system A is providing normal pressure and the yaw damper switch is ON.

Main & standby yaw damper functions are lost.

Correct! Wrong!

What is the correct flap setting for a jammed stabilizer landing?

30 or 40

Correct! Wrong!

In addition to Hydraulic System A & B, the rudder can also be powered by the Standby Hydraulic System through the:

Main Rudder Power Control Unit

System B Standby Rudder Power Control Unit

System A Standby Rudder Power Control Unit

Standby Rudder Power Control Unit

Correct! Wrong!

Extending the flaps to flaps 15 using ALTERNATE FLAPS takes approximately _______

1 minute.

2 minutes.

4 minutes.

30 seconds.

Correct! Wrong!

What is the maximum flap extension altitude?

23 000 feet

17 000 feet

20 000 feet

10 000 feet

Correct! Wrong!

To operate the Feel system, the Elevator Feel Computer uses:

Hydraulics system A

Hydraulics system B

Either hydraulics system A or B pressure (whichever is higher)

Either hydraulics system A or B pressure

Correct! Wrong!

The system operates normally even with only one hydraulics system remaining

The amber FEEL DIFF PRESS light illuminates when the:

Flaps are not up (more than 5) and a hydraulic pressure imbalance is detected or one of the elevator feel pitot systems fails.

Flaps are up or down and a hydraulic pressure imbalance is detected or if one of the elevator pitot systems fails.

Flaps are up and a pressure imbalance between hydraulic systems A & B is detected or if one of the elevator feel pitot systems fails

Flaps are not up and a hydraulic pressure imbalance is detected or one of the elevator feel pitot systems fails

Correct! Wrong!

Dual AILERON trim switches, located on the aft electronic panel, must be pushed simultaneously to command trim changes. The trim electrically repositions the aileron feel and centering unit, which causes the control wheel to rotate and redefines the aileron neutral position.

True

False.

Correct! Wrong!

If a failed AOA circuit is detected, what will happen?

The Split Vane Monitor and MVS will be bypassed.

The MCAS and STS functions will be disabled for the remainder of the flight

SPEED TRIM FAIL will illuminate immediately.

Correct! Wrong!

If the spoilers become jammed:

The ALT spoiler system is selected

The captain's control wheel operates the ailerons

The first officer's control wheel operates the ailerons

The first officer's control wheel operates the spoilers and ailerons

Correct! Wrong!

If wheel spinup is not detected on landing with the speed brake armed the flight spoilers will deploy automatically :

When the ground spoilers deploy.

Flight spoilers do not deploy on landing, only ground spoilers deploy.

When the air/ground system senses the ground mode (any strut compresses).

Only when the RIGHT main landing gear strut compresses.

Correct! Wrong!

Concerning Mach Trim operation, FCCs use Mach information from the ADC / ADIRU, to compute a Mach trim actuator position whih repositions the elevator feel and centering unit, which adjusts the control column neutral position (column will not move).

True

False

Correct! Wrong!

The column will move

What is number of ground spoilers on each wing?

Three.

Two.

Four.

Five.

Correct! Wrong!

If the flight crew activates the FLT CONTROL switch Overhead panel to STBY RUD, it activates the:

Standby hydraulic system pump and closes flight control shutoff valve, isolating ailerons and elevators.

Standby hydraulic systemp pump.

Standby hydraulic system pump and closes the standby rudder shutoff valve

Standby hydraulic system pump and opens the standby rudder shutoff valve to pressurize standby rudder power control unit.

Correct! Wrong!

In the event of hydraulic Systems A & B fail, ailerons, elevators, and rudder can be operated with the Standby system.

False

True

Correct! Wrong!

During a steady right-handed turn on the ground, correct indications of the Yaw Damper indicator would be?

Steady full scale right deflection

Steady full scale left deflection.

Steady in the center position.

Correct! Wrong!

What do the MACH TRIM FAIL, SPEED TRIM FAIL & AUTO SLAT FAIL lights have in common?

All statements are correct.

Will illuminate if both system computers fail.

Also illuminates the Master Caution & FLT CONT annunciator lights.

Will illuminate during Master Caution Recall if only one computer has failed.

Correct! Wrong!

Elevator Feel provides simulated aero forces using airspeed from elevator pitot & stabilizer position.

True

False

Correct! Wrong!

The feel is transmitted to the control columns by the elevator feel & centering unit.

Speed Trim Failure (SPEED TRIM FAIL) Light - If illuminated (amber) this indicates a:

Failure of the speed trim system but also indicates a failure of a single FCC channel when MASTER CAUTION light recall is activated and light extinguishes when Master Caution System is reset.

Partial failure of the speed trim system if the MASTER CAUTION can be reset.

Failure of the speed trim system but also indicates failure of the elevator system if the MASTER WARNING cannot be reset.

Failure of the speed trim system.

Correct! Wrong!

The primary flight controls consist of rudder, ailerons and ______

Spoilers

Flaps

Elevators

Speedbrakes

Correct! Wrong!

Yaw damper inputs (main or standby) can be overriden:

By trim inputs but not rudder pedal inputs.

By either trim or rudder pedal inputs.

By rudder pedal inputs but not trim inputs.

Only when the yaw damper switch is off.

Correct! Wrong!

If a failed AOA circuit is detected, what will happen?

The MCAS and STS functions will be disabled for the remainder of the flight

SPEED TRIM FAIL will illuminate immediately.

The FCCs will only utilise the valid AOA value to control MCAS

Correct! Wrong!

The airspeed range for trim operation is:

158-300 KIAS

100 KIAS - Mach 0.50

100-300 KIAS

100 KIAS - Mach 0.615

Correct! Wrong!

If the flight crew selects the ALTERNATE FLAPS to the ARM position:

Standby pump is armed while the Trailing Edge flap bypass valve is de-energized.

Trailing Edge flap bypass valve closes, standby pump activates and ALTERNATE FLAPS position switch is armed.

Trailing Edge flap bypass valve closes and standby pump activates.

Standby pump is armed while the Trailing Edge flap bypass valve is energized.

Correct! Wrong!

Roll control is provided by the ailerons, assisted by the _____

Flight spoilers

Ground spoilers

Flight spoilers or ground spoilers (depending on speed)

Flight spoilers & ground spoilers

Correct! Wrong!

A Mach Trim system provides speed stability at the higher Mach numbers.Mach trim is automatically accomplished above:

Mach 0.50

Mach 0.615

Mach 0.655

Mach 0.70

Correct! Wrong!

At what flap setting(s) should the leading edge slats be in the FULL EXTEND position?

1 to 5

5 to 40.

Greater than 5

Correct! Wrong!

The flight spoilers rise on the wing with up aileron and remain faired on the wing with down aileron. When the control wheel is displaced more than approximately ____ degrees, spoiler deflection is initiated.

6,5

Correct! Wrong!

What is the number of flight spoilers located on each wing?

Correct! Wrong!

Leading Edge devices are normally operated by ______

Hydraulic System A

Standby Hydraulic system.

Hydraulic System B

Hydraulic Systems A & B

Correct! Wrong!

During descent from altitude you need to decrease your aispeed by using your speed brakes. What is the correct position of the SPEED BRAKE LEVER.

ARMED

Any intermediate position.

FLIGHT DETENT

Correct! Wrong!

Boeing 737 Max - Flight controls

Quiz

Boeing B737 MAX - Flight controls

The Flap/Slat Electronics Unit (FSEU) provides:

The number of slats located on each wing are:

The Power Transfer Unit provides an alternate source of power for the Autoslat System if:

The flap load relief system is operational at:

During a normal landing, flight spoilers & ground spoilers will always extend simultaneously.

The speedbrake lever will move forward and all spoilers will retract if either thrust lever is advanced after landing.

The ALTERNATE FLAPS Master Switch:

Mach Trim system corrects for Mach tuck by moving stabilizer up.

Landing flap 40 selected and in position. An IAS of 178kts is flown due to a highwind gust. Would you expect:

The flight control computers use Mach Information from the _____ to compute a Mach trim actuator position.

The Autoslat system:

During an ALL FLAPS UP LANDING, the speed to be maintained is:

The elevator transfer mechanism allows:

The Speed Trim System (STS) operates most frequently during takeoffs & go-arounds. Conditions for speed trim operation are:

If the difference in AoAs exceeds 5.5 degrees, what will happen?

The trailing edge flaps are at 15 units. The correct indication on the aft overhead panel for the leading edge devices is:

Main electric trim has 2 speed modes : high & low speed.

The SPEED BRAKE DO NOT ARM light indicates that the speedbrake is not usable.

The Speed Trim System (STS) is a speed stability augmentation system designed to improve flight characteristics during operation with a low gross weight, aft center of gravity and high thrust when the autopilot is not engaged.

Why are mechanical gates installed on the flap selector unit?

The amber ASSIST ON light indicates:

With a loss of both system A & B, the elevator FEEL DIFF PRESS light will illuminate.

The amber LE FLAPS TRANSIT light:

The FEEL DIFF PRESS light indicates:

Loss of Hydraulic System B pressure does not cause illumination of the amber YAW DAMPER light or yaw damper disengagement.

The amber SPOLIERS light is located on the bottom right of the Flight Control Panel and indicates:

If the SPEEDBRAKES EXTENDED light is illuminated in flight. It indicates:

The trailing edge flaps devices consist of double slotted flaps inboard outboard of each engine.

During flight with both hydraulic systems A & B inoperative:

Emergency Descent Speedbrakes are armed when is above 30,000 ft and:

Elevator system feel is provided by the elevator feel computer. This computer receives inputs of:

With the loss of hydraulic system B, (system A operating normally):

What is the correct flap setting for a jammed stabilizer landing?

In addition to Hydraulic System A & B, the rudder can also be powered by the Standby Hydraulic System through the:

Extending the flaps to flaps 15 using ALTERNATE FLAPS takes approximately _______

What is the maximum flap extension altitude?

To operate the Feel system, the Elevator Feel Computer uses:

The amber FEEL DIFF PRESS light illuminates when the:

Dual AILERON trim switches, located on the aft electronic panel, must be pushed simultaneously to command trim changes. The trim electrically repositions the aileron feel and centering unit, which causes the control wheel to rotate and redefines the aileron neutral position.

If a failed AOA circuit is detected, what will happen?

If the spoilers become jammed:

If wheel spinup is not detected on landing with the speed brake armed the flight spoilers will deploy automatically :

Concerning Mach Trim operation, FCCs use Mach information from the ADC / ADIRU, to compute a Mach trim actuator position whih repositions the elevator feel and centering unit, which adjusts the control column neutral position (column will not move).

What is number of ground spoilers on each wing?

If the flight crew activates the FLT CONTROL switch Overhead panel to STBY RUD, it activates the:

In the event of hydraulic Systems A & B fail, ailerons, elevators, and rudder can be operated with the Standby system.

During a steady right-handed turn on the ground, correct indications of the Yaw Damper indicator would be?

What do the MACH TRIM FAIL, SPEED TRIM FAIL & AUTO SLAT FAIL lights have in common?

Elevator Feel provides simulated aero forces using airspeed from elevator pitot & stabilizer position.

Speed Trim Failure (SPEED TRIM FAIL) Light - If illuminated (amber) this indicates a:

The primary flight controls consist of rudder, ailerons and ______

Yaw damper inputs (main or standby) can be overriden:

If a failed AOA circuit is detected, what will happen?

The airspeed range for trim operation is:

If the flight crew selects the ALTERNATE FLAPS to the ARM position:

Roll control is provided by the ailerons, assisted by the _____

A Mach Trim system provides speed stability at the higher Mach numbers.Mach trim is automatically accomplished above:

At what flap setting(s) should the leading edge slats be in the FULL EXTEND position?

The flight spoilers rise on the wing with up aileron and remain faired on the wing with down aileron. When the control wheel is displaced more than approximately ____ degrees, spoiler deflection is initiated.

What is the number of flight spoilers located on each wing?

Leading Edge devices are normally operated by ______

During descent from altitude you need to decrease your aispeed by using your speed brakes. What is the correct position of the SPEED BRAKE LEVER.