Boeing B737 MAX - Flight controls

The ALTERNATE FLAPS Master Switch:

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

Closes the Flight Spoiler Shutoff valve

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

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

Correct! Wrong!

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

By trim inputs but not rudder pedal inputs.

Only when the yaw damper switch is off.

By either trim or rudder pedal inputs.

By rudder pedal inputs but not trim inputs.

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

Main & standby yaw damper functions are lost.

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.

Correct! Wrong!

The primary flight controls consist of rudder, ailerons and ______

Flaps

Spoilers

Speedbrakes

Elevators

Correct! Wrong!

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

False.

True.

Correct! Wrong!

It moves elevators up (not the stabilizer)

The amber FEEL DIFF PRESS light illuminates when the:

Flaps are not up and a hydraulic pressure imbalance is detected or one of the elevator feel 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 (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.

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).

False

True

Correct! Wrong!

The column will move

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

Only when the RIGHT main landing gear strut compresses.

When the ground spoilers deploy.

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

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

Correct! Wrong!

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

5 to 40.

Greater than 5

1 to 5

Correct! Wrong!

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

Either hydraulics system A or B pressure

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

Hydraulics system B

Hydraulics system A

Correct! Wrong!

The system operates normally even with only one hydraulics system remaining

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

True

False.

Correct! Wrong!

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 30.

Flaps to remain in the current configuration.

Flaps to retract to 15.

Flaps to retract to 25.

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.

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

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.

False.

True

Correct! Wrong!

The amber LE FLAPS TRANSIT light:

Provides TE Flaps asymetry protection.

Indicates LE Slats are fully extended

Is inhibited during Autoslat operation inflight

Indicates all LE Devices are fully extended

Correct! Wrong!

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

False

True

Correct! Wrong!

The Autoslat system:

Is normally powered by Hydraulic System A.

Is normally powered by Transfer Bus No.2.

Provides for slat deployment above VMO/MMO.

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

Correct! Wrong!

The number of slats located on each wing are:

Correct! Wrong!

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

True.

False.

Correct! Wrong!

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

the flight spoilers are used.

the cabin altitude is above 14,000ft.

the cabin altitude warning is active.

Correct! Wrong!

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

Mach 0.615

Mach 0.70

Mach 0.655

Mach 0.50

Correct! Wrong!

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 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.

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

FLIGHT DETENT

Any intermediate position.

Correct! Wrong!

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

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

The Alternate Flaps Position Switch is momentarily held down

Hydraulic System A engine driven pump is inoperative

A loss of Hydraulic System A pressure is sensed

Correct! Wrong!

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

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

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

Trailing Edge flap bypass valve closes and standby pump activates.

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

Correct! Wrong!

Why are mechanical gates installed on the flap selector unit?

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

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

Prevent flap movement to UP position

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

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 5 position.

Flaps 10 position.

Flaps 15 position.

Correct! Wrong!

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

False

True

Correct! Wrong!

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

During flight with both hydraulic systems A & B inoperative:

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

The standby hydraulic system operates the flaps flaps system normally

The standby hydraulic system operates the trailing edge flaps normally

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

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!

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

30 seconds.

4 minutes.

2 minutes.

1 minute.

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!

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 on recall

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 when on ground and below 30 knots

Correct! Wrong!

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

Flight spoilers & ground spoilers

Ground spoilers

Flight spoilers

Flight spoilers or ground spoilers (depending on speed)

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.

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 40%, 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%, 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 60%, autopilot not engaged, sensing of trim requirement.

Correct! Wrong!

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

False

True

Correct! Wrong!

What is the maximum flap extension altitude?

20 000 feet

17 000 feet

10 000 feet

23 000 feet

Correct! Wrong!

What is number of ground spoilers on each wing?

Five.

Four.

Three.

Two.

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!

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

The Split Vane Monitor and MVS will be bypassed.

SPEED TRIM FAIL will illuminate immediately.

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

Correct! Wrong!

Leading Edge devices are normally operated by ______

Standby Hydraulic system.

Hydraulic System A

Hydraulic Systems A & B

Hydraulic System B

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!

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

ADIRU.

Airspeed Indicator and any thrust lever position.

Mach/Airspeed Indicator and thrust levers position.

Airspeed Indicator.

Correct! Wrong!

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

All statements are correct.

Also illuminates the Master Caution & FLT CONT annunciator lights.

Will illuminate if both system computers fail.

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

Correct! Wrong!

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

Steady in the center position.

Steady full scale left deflection.

Steady full scale right deflection

Correct! Wrong!

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

30 or 40

Correct! Wrong!

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

VREF40 + 55

VREF40 + 30

VREF40 + 15

VREF40 + 60

Correct! Wrong!

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

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

SPEED TRIM FAIL will illuminate immediately.

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

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

Standby Rudder Power Control Unit

System A Standby Rudder Power Control Unit

Correct! Wrong!

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

Altitude & elevator position

Airspeed & stabilzer position.

Only System A hydraulic pressure

Elevator balance tabs position

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 one or more spoiler pairs are inoperative.

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

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

Correct! Wrong!

The elevator transfer mechanism allows:

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

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.

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.

Correct! Wrong!

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

True.

Correct! Wrong!

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.

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.

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

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 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 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 5 or the Radio altitude is less than 500 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.

Correct! Wrong!

The flap load relief system is operational at:

All flap settings.

Flaps 30 & 40.

Flaps 40 only.

Flaps 15, 30 & 40.

Correct! Wrong!

The airspeed range for trim operation is:

100 KIAS - Mach 0.50

158-300 KIAS

100 KIAS - Mach 0.615

100-300 KIAS

Correct! Wrong!

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

False.

True.

Correct! Wrong!

If the spoilers become jammed:

The captain's control wheel operates the ailerons

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

The ALT spoiler system is selected

The first officer's control wheel operates the ailerons

Correct! Wrong!

The Flap/Slat Electronics Unit (FSEU) provides:

All statements are correct.

Uncommanded motion protection for LE devices and TE flaps.

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

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

Correct! Wrong!

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

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

All LE devices FULL EXT lights illuminated

All amber TRANSIT lights illuminated

All LE devices EXT lights illuminated

Correct! Wrong!

Boeing 737 Max - Flight controls

Quiz

Boeing B737 MAX - Flight controls

The ALTERNATE FLAPS Master Switch:

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

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

The primary flight controls consist of rudder, ailerons and ______

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

The amber FEEL DIFF PRESS light illuminates when the:

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).

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

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

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

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

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

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

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.

The amber LE FLAPS TRANSIT light:

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

The Autoslat system:

The number of slats located on each wing are:

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

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

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

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

The FEEL DIFF PRESS light indicates:

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.

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

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

Why are mechanical gates installed on the flap selector unit?

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

During flight with both hydraulic systems A & B inoperative:

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

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

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.

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

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

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.

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

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

What is the maximum flap extension altitude?

What is number of ground spoilers on each wing?

The amber ASSIST ON light indicates:

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

Leading Edge devices are normally operated by ______

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

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

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

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

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

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

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

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

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

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

The elevator transfer mechanism allows:

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

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

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

The flap load relief system is operational at:

The airspeed range for trim operation is:

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

If the spoilers become jammed:

The Flap/Slat Electronics Unit (FSEU) provides:

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