Flight Controls Flashcards
What is the only primary flight control that is not FBW (Fly-By-Wire)?
Ailerons
What is the difference between normal mode and direct mode?
There are no higher level functions available in direct mode
What are the higher level functions associated with pitch?
Gain on airspeed
Elevator thrust compensation
AOA limiting
What are the higher level functions associated with yaw?
Yaw damp
Turn coordination
Gain on airspeed – as airspeed increases, rudder deflection decreases
What is the priority for the trim system?
Back-up Trim Switch
Captain
First Officer
Autopilot
How is roll controlled?
Ailerons and multi-function spoilers (outer 3 spoilers on each wing)
How many spoilers are on each wing? What are their functions?
5
3 outboard multi-function spoilers are used to assist in roll control, as speed brakes, and as ground spoilers
2 inboard spoilers are only used as ground spoilers
When will the speed brakes automatically close even if the lever shows deployed?
Slat/Flaps selected to 2 or greater
Airspeed < 180 kts.
TLA > 70°
What is the flap/slat extension/retraction sequence?
Slats extend first
Flaps retract first
Will loss of airspeed data cause the flight controls to go into ‘DIRECT’ mode?
Yes
Can a FCM override pilot input?
No, the pilot always has supreme control
What happens to artificial feel if flight controls are disconnected?
Artificial feel is felt at ½ the normal load
How are the flight controls trimmed?
Roll & Yaw: Ailerons and Rudder surface repositioned to a new ‘neutral position’
Pitch: Horizontal Stabilizer
Will the multi-function spoilers function in ‘DIRECT’ mode?
Yes, for roll only and at a default fixed gain
Will the speed brakes / ground spoilers function in ‘DIRECT’ mode?
No
What happens to the flight control system when the RAT is the only AC power source?
Horizontal stab trim operates at LO SPEED
Slat / flap system operates at LO SPEED
Slat / flap position is limited to ‘3’ to allow adequate airspeed for the RAT
The only difference between positions 3 and 4/5 are the slats are left more retracted.
