Flight Controls

Question 1

Of the 6 spoiler panels on each wing, which are used for roll control?

Answer 1

5 outboard panels

Question 2

Which elevator positions are displayed by the surface position indicator on the secondary EICAS display?

Answer 2

Left and right outboard elevators

Question 3

The control wheel has two stab trim switches located next to each other. What happens if only one of the two switches is moved?

Answer 3

Both switches must be moved together to operate stab trim

Question 4

What controls trailing edge flap asymmetry?

Answer 4

Flap control unit (FCU)

Question 5

On the -400, FCU’s operate in what two control modes?

Answer 5

Primary and secondary

Question 6

On the -400, flap loading relief is not available in what modes?

Answer 6

Secondary and alternate modes

Question 7

Which is true concerning Autopilot Trim?

Answer 7

The right autopilot uses the hydraulic system 2 stab trim control module. The left autopilot uses the hydraulic system 3 stab trim control module.

Question 8

What happens if control wheel trim switches are moved with multiple autopilots engaged?

Answer 8

Nothing, the switches are inhibited

Question 9

If a control column is moved opposite to stab trim motion?

Answer 9

Trim commands will be cut off to the stab trim control modules

Question 10

Horizontal stabilizer trim can be controlled by?

Answer 10

ALTN stab trim switches and control wheel stab trim switches

Question 11

Control column inputs act mechanically on which elevator actuators?

Answer 11

Inboard elevators only, which provide input to the outboard elevators

Question 12

In the Primary mode, which flap groups move when Flaps 1 is selected?

Answer 12

Mid and inboard leading edge flaps fully extend

Question 13

The position of which spoiler panels are displayed by the surface position indicator on the secondary engine EICAS display?

Answer 13

Fourth spoiler panel in from the left wingtip, outboard on the right wing.

Question 14

How are the trailing edge flaps powered in the secondary mode?

Answer 14

Electrics

Question 15

How are the trailing edge flaps powered in the primary mode?

Answer 15

Pneumatics

Question 16

What happens if the Rudder Ratio Changer fails?

Answer 16

At high airspeeds, excess rudder deflection may be available. At low airspeeds, full rudder deflection may not be available.

Question 17

On landing, if the speed brake lever is not ARMED, when will Ground Spoilers deploy?

Answer 17

Main gear touchdown, Thrust lever 1 and 3 near idle and TR 2 or 4 deployed

Question 18

On landing if the Speed Brake Lever is ARMED, when will Ground Spoilers automatically deploy?

Answer 18

Thrust levers 1 and 3 near idle, and Main Gear touchdown

Question 19

How is the autopilot affected by the use of control wheel or alternate stab trim?

Answer 19

Alternate stab trim use overrides autopilot trim without causing disengagement

Question 20

Asymmetry protection is available in which flap modes?

Answer 20

Primary and secondary

Question 21

Of the 6 spoiler panels on each wing, which are used as ground spoilers?

Answer 21

All 6 panels

Question 22

Of the 6 spoiler panels on each wing, which function as speed brakes in flight?

Answer 22

4 inboard panels

Question 23

What does the FMC use to determine the appropriate green band for takeoff trim?

Answer 23

Gross weight, CG, and Takeoff thrust setting

Question 24

What happens when any flap group fails to move to the commanded position while the FCU is in the primary mode?

Answer 24

The FCU’s switch to secondary mode driving the flap group through electric motors

Question 25

In what modes do the leading and trailing edge flaps function?

Answer 25

Primary, Secondary, alternate modes

Question 26

When any flap position is non-normal or if flap control is in the secondary mode, all flap positions are displayed on the EICAS display. What does an amber crosshatch indicate when the EICAS is displaying secondary flap indications?

Answer 26

Drive unit is inoperative with flap group partially extended or flap panel failure has occurred.

Question 27

Flap load relief is available for flaps 25 and 30 in which flap modes?

Answer 27

Primary

Question 28

Inboard trailing edge flaps are normally powered by which hydraulic systems?

Answer 28

#1 Hyd

Question 29

Outboard trailing edge flaps are normally powered by which hydraulic systems?

Answer 29

#4 Hyd

Question 30

If a rudder ratio changer system fails, what may not be available at low airspeed?

Answer 30

Full rudder deflection

Question 31

If one autopilot is engaged and the control wheel stab trim switches are activated what will happen to the autopilot?

Answer 31

The autopilot will disengage

Question 32

If the alternate stab trim switches are activated with any number of autopilots engaged what happens to the autopilot trim commands?

Answer 32

Alternate stab trim will override autopilot trim commands

Question 33

Which is true concerning alternate stab trim?

Answer 33

Provides trim commands to the trim control modules through separate control channels

Question 34

How are the trailing edge and leading edge flaps powered in the secondary and alternate modes?

Answer 34

Electric

Question 35

With a loss of hydraulic system 4 which spoiler panels will not operate?

Answer 35

The inboard 2 on each wing

Question 36

What is the maximum extension position of the trailing edge flaps in the alternate control mode?

Answer 36

Flaps 25

Question 37

If the speedbrake lever is in the DOWN position with the main gear on the ground, when will the ground spoilers deploy?

Answer 37

Thrust levers 1 and 3 near the closed position, TR's 2 or 4 to the idle detent

Question 38

With the speedbrake lever in the ARMED position and main gear touchdown when will the ground spoilers deploy?

Answer 38

Thrust levers 1 and 3 near the closed position

Question 39

How are the leading edge flaps powered in the primary mode?

Answer 39

Pneumatic

Question 40

The upper and lower yaw damper actuators are powered by which hydraulic systems?

Answer 40

Hyd #2 and #3

Question 41

In the alternate mode how is flap extension sequences?

Answer 41

All leading edge and trailing edge flaps extend immediately

Question 42

With the stab trim cutout switches in CUTOUT, is trim available in any other mode to the stab trim modules?

Answer 42

No, all hyd power is removed from the trim control modules

Question 43

Which control modes have trailing edge flap asymmetry protection

Answer 43

Primary and secondary

Question 44

Which thrust levers when advanced from closed position will drive the speedbrake lever to the DOWN position with the main gear on the ground?

Answer 44

Thrust levers 1 and 3