Flight Controls

Question 0

Which yoke is connected to the left aileron?

Answer 0

Captain’s

Question 1

Which yoke is connected to the right aileron?

Answer 1

FO

Question 2

How are the ailerons, elevators and rudder actuated?

Answer 2

Yoke and pedals operate a system of cables and pulleys that connect to pull and push rods at the flight control which operate a hydraulic PCU which hydraulically actuated the control surface

Question 3

Which yoke controls the right elevator?

Answer 3

FO

Question 4

Which yoke controls the left elevator?

Answer 4

Captain’s

Question 5

What is the purpose of the multifunction Spoilers (MFS)?

Answer 5

To assist with roll control and serve as a spoiler in flight and on landing

Question 6

Are the MFS operational at any speeds?

Answer 6

Yes

Question 7

How are the MFS’s controlled when used for roll assistance?

Answer 7

The FO’s yoke position sends and electrical signal to the left MFS panels which are hydraulically operated by PCU’s.
The CA’s yoke position sends an electrical signal to the right MFS panels which are hydraulically operated by PCU’s.

Question 8

What is the flight deck indication of a jammed aileron cable?

Answer 8

Both yokes will be jammed

Question 9

What happens after the ROLL DISC handle is pulled?

Answer 9

The aileron cable and pulley systems are disconnected through torque tubes
20 seconds later, if the operable side has not been selected, the amber ROL SEL SWITCHLIGHT illuminates

Question 10

How is the operable side (roll) selected?

Answer 10

By pushing the ROL SEL/PLT ROL SWITCHLIGHT on the unjammed side

Question 11

What does pushing the ROL SEL/PLT ROL SWITCHLIGHT accomplish?

Answer 11

Allows the pilot with the operable aileron to control the on-side MFS panels

Question 12

What is flight deck indication of an aileron PCU runaway?

Answer 12

Aircraft begins an uncommand roll and PLT SEL SWITCHLIGHT on the side without the PCU runaway illuminates automatically because of the bungee break-out signal

Question 13

What is occurring when the pilots trim the aileron or rudder?

Answer 13

The control surface is being repositioned

There are no trim tabs

Question 14

What panels are part of the GND LIFT dumping system?

Answer 14

Inboard and outboard ground spoilers

All 4 MFS panels

Question 15

How are the flight controls gust locked?

Answer 15

Hydraulic fluid is trapped after shutdown

Question 16

How is the Yaw Damper engaged?

Answer 16

YD1 and YD2 engage SWITCHLIGHT on the center pedestals

Question 17

How is the YD disengaged?

Answer 17

DISC button on the center pedstal

Question 18

What controls the YD?

Answer 18

The flight control computer

Question 19

Is it necessary to disconnect the YD on landing?

Answer 19

No

Question 20

How are the flaps operated?

Answer 20

Electrically

Question 21

How many flap segments does then CRJ have?

Answer 21

4 total, 2 on each wing

Question 22

Is there any asymmetrical protection within the flaps?

Answer 22

Yes, if the flap segments differ by >5 degrees

The brakes are applied and the flaps will remain at the current position

Question 23

How is STAB TRIM operated?

Answer 23

Electrically, a split switch on the control yoke operates two motors and a jack screw changing the horizontal stabilizer angle of incidence

Question 24

What systems can operate the STAB TRIM?

Answer 24

CA & FO trim switches

Autopilot and MACH trim

Question 25

What is the priority for STAB TRIM control?

Answer 25

CA
FO
Autopilot
MACH trim