Flight Controls

Question 1

Can the STAB TRIM be disconnected with STAB TRIM ENGAGE switches (CH1 CH2)?

Answer 1

No

Question 2

Emergency flap gated switch - deploy position - what happens when engage?

Answer 2

In the event of a problem with the slat flap handle, this switch can be used to extend the flap/slats to 20’ below an airspeed of 230 kts

Question 3

Will the flaps deploy using the emergency flap gated switch if airspeed is in excess of 230?

Answer 3

No

Question 4

If there is a problem with the flap power drive unit (PDU) will the EMER FLAP SWITCH force the flaps/slats to extend or retract?

Answer 4

No, it only serves as a backup for the lever inside.

Question 5

If the AP/SP DISC switch is pressed and held for more than 4 seconds, what EICAS message would be expected?

Answer 5

STALL FAIL caution message would illuminate. After switch is released, message will should extinguished.

Question 6

What is indicated by the amber ROLL SEL switchlight?

Answer 6

When illuminated, pilot without jammed controls will select switchlight and have control of multi-function spoilers on both wings.

Question 7

What is indicated by the green pilot or copilot portion of the ROLL switchlight?

Answer 7

Indicates that the switchlight has been pressed in. Deselecting should cause it to extinguish.

Question 8

During a PCU control runway, with PLT or CPLT roll switchlight, which side should be illuminated?

Answer 8

Pilot side with properly functioning controls.

Question 9

What is the rudder travel limiter?

Answer 9

Restricts tail loading at high speeds. Between 33 and 4 degrees based on flap position and airspeed.

Question 10

Which control wheel is the autopilot roll servo connected to?

Answer 10

The first officer’s side.

Question 11

Which control wheel is the autopilot pitch servo connected to?

Answer 11

The captains side

Question 12

What indications will be present with a PCU runway?

Answer 12

One of the 2 green roll select sides will illuminated

Question 13

When the aileron trim is in the normal range on the ground, what color will it be displayed in?

Answer 13

Green, will turn white when moved out of the normal range.

Question 14

What color will the aileron trim be displayed while in flight?

Answer 14

White, regardless of trim position

Question 15

What do the yaw dampers do?

Answer 15

Improve lateral stability and alleviate dutch roll

Question 16

When the pitch disconnect handle is pulled, will the autopilot be available? And why?

Answer 16

The autopilot may not be available because autopilot servo for pitch is located on the captains side.

Question 17

When the roll disconnect handle is pulled, will the autopilot be available? And why?

Answer 17

The autopilot may not be available because the autopilot server for roll is located on the first officers side.

Question 18

How many PCU’s power the rudder?

Answer 18

3, which are powered by the hydraulic systems.

Question 19

If the rudder is jammed, how can control be regained?

Answer 19

Increased pressure on the rudder pedals will activate the bungee breakout system causing control to be regained.

Question 20

How many stab trim motors are active at a time?

Answer 20

Only 1 motor drives the jackscrew at a time. The other motor free wheels with the operative motor, and assumes control if operating motor fails.

Question 21

Will the autopilot disengage if the manual control yoke is used.

Answer 21

Yes

Question 22

Name the 4 different trims in order of priority.

Answer 22

MAAM
Manual trim, captain has priority
Autopilot trim
Auto trim (flap compensation trim)
Mach trim

Question 23

What protection is provided in the event of a STAB TRIM runaway?

Answer 23

Stab trim brakes controlled by the SSCU’s (Spoiler Stabilizer Control Unit)

Question 24

What is auto trim?

Answer 24

Auto trim compensates for changes in aircraft pitch associated with flap extension or retraction.

Question 25

What is the purpose of split switch on the control yoke for STAB TRIM?

Answer 25

To prevent inadvertent trim adjustment

Question 26

Will the alternate flap extension switch move the slat/flaps faster than 230 kts?

Answer 26

No

Question 27

Will the alternate flap extension switch override the flap handle?

Answer 27

Yes, to 20 degrees.

Question 28

Will the stick pusher engage if only one switch is armed?

Answer 28

No

Question 29

If the ground spoilers failed to deploy after touchdown, what action can be taken?

Answer 29

Move the ground lift dumping switch to MAN ARM.

Question 30

How is hydraulic pump 3B powered in the event of a total electrical failure?

Answer 30

The ADG

Question 31

What protects the flight controls in the event of a PCU runaway?

Answer 31

Bungee breakouts

Question 32

What protects the ailerons from flutter in the event of a loss of pressure to the PCUs?

Answer 32

Flutter dampers

Question 33

What are the slats and flaps powered by?

Answer 33

2 electric motors, each controlled by to slat/flap electronic control units (SFECU’s)

Question 34

What happens if one slat or flap motor fails?

Answer 34

The slats/flaps will operate at half speed

Question 35

What is the elevator travel?

Answer 35

23’ up and 18’ down

Question 36

Where is the rudder or aileron miss-trim indicated?

Answer 36

It will be indicated as a boxed R or A on the PDF.

Question 37

When do spoilers retract after landing?

Answer 37

40 seconds after weight on wheels

Question 38

In the event of a pending stall, what automatic warnings will be provided?

Answer 38

Stick pusher, continuous ignition, autopilot disengaged, audible warning.

Question 39

What does the GLD UNSAFE (Ground Lift Dumping) indicate?

Answer 39

Indicates ground lift dumping may occur inadvertently if the system is not manually disarmed.