Flight Controls

Question 1

What is the only primary flight control that is not FBW?

Answer 1

Ailerons

Question 2

What is the difference between normal mode and direct mode?

Answer 2

There are no higher level functions available in direct mode

Question 3

What are the higher level functions associated with pitch?

Answer 3

• Gain on airspeed
• Elevator thrust compensation
• AOA limiting

Question 4

What are the higher level functions associated with yaw?

Answer 4

• Yaw damp
• Turn coordination
• Gain on airspeed - as airspeed increases, rudder deflection decreases

Question 5

What is the priority for the trim system?

Answer 5

• Backup
• Captain
• FO
• Autopilot

Question 6

How is roll controlled?

Answer 6

Ailerons and multifunction spoilers (outer spoilers on each wing)

Question 7

How many multifunction spoilers are on each wing? What are their functions?

Answer 7

• 5
• 3 outboard spoilers are used to assist in roll control and for ground spoilers
• 2 inboard spoilers are ground-only

Question 8

When will the speed brakes automatically close even if the lever shows deployed?

Answer 8

• Flaps >= 2
• Airspeed , 180 kts
• TLA > 70 deg

Question 9

What is the slat/flap extension/retraction sequence?

Answer 9

Slats extend first, flaps retract first

Question 10

Will loss of airspeed data cause the flight controls to go into DIRECT mode?

Answer 10

Yes

Question 11

Can a FCM override pilot input?

Answer 11

No, the pilot always has supreme control

Question 12

What happens to artificial feel if flight controls are disconnected?

Answer 12

• Elevator- artificial feel is felt at 1/2 normal load

- Ailerons: Captain has normal feel, FO has no feel

Question 13

How are the flight controls timed?

Answer 13

• Roll and yaw: Ailerons and rudder surfaces repositioned to a new ‘neutral position’
• Pitch: Horizontal stabilizer

Question 14

Will the multi-function spoilers function in DIRECT mode?

Answer 14

Yes, for roll only and at a default sized gain

Question 15

Will the speed brakes/ground spoilers function in DIRECT mode?

Answer 15

No

Question 16

What happens to the flight control system when the RAT is the only AC power source?

Answer 16

• Horizontal stab trim operates at 1/2 speed
• Slat/flaps system operates at 1/2 speed
• Slat/flap position is limited to ‘3’ to allow adequate airspeed for the RAT

Question 17

What type of flaps are on the aircraft?

Answer 17

Double slotted fielder flaps, 2 per wing, 4 total

Question 18

What is the actuator the moves the slats and flaps? How are they powered?

Answer 18

PDU, power driver unit, electrically powered

Question 19

What is the actuator that moves the rudder? How is it actuated?

Answer 19

PCU, power control unit, hydraulically actuated

Question 20

What is the device that actuates the ailerons? How is it actuated and controlled?

Answer 20

PCU, power control unit, hydraulically actuated, controlled by conventional cables

Question 21

What is the device that moves the horizontal stabilizer? How is it powered?

Answer 21

HSA, horizontal stabilizer actuator, electrically powered