Systems - Flight Controls

Question 1

How is roll control maintained with loss of all hydraulic fluid?

Answer 1

Ailerons only

Question 2

When is Spoiler deflection initiated based on control wheel input?

Answer 2

10 degrees deflection

Question 3

Which side has control in the event of an Alieron Control Jam

Answer 3

FO controls will still control spoiler system

Question 4

Which side has control in the even of a Spoiler Control Jam?

Answer 4

Captain side will have aileron control

Question 5

Will elevator system work with loss of all hydraulic fluid?

Answer 5

Elevators can still be controlled mechanically through manual reversion of system

Question 6

Which side has control in the event of an elevator control jam?

Answer 6

The system will be split so one side maintains control. The split is accomplished by putting pressure on both control columns until one side breaks free

Question 7

When is Mach Trim engaged?

Answer 7

Above speeds of Mach 0.615

Counteracts nose down tendency of mach tuck as speed approaches mach 1 with stabilizer trim

Question 8

What are the conditions for Speed Trim to operate?

Answer 8

• Airspeed between 100kts and Mach 0.60 10 sec after takeoff
• 5 seconds following releases of trim switches
• Autopilot not engaged
• Sensing of trim requirement

Speed Trim adjusts trim in unusual configurations such as; low gross weight, aft centre of gravity, high trust. Mostly during climbout from takeoff or go around

Question 9

Conditions for ground speed breaks to operate automatically?

Answer 9

• Speed break lever armed
• Speed break ARMED light
• RA less than 10 ft
• Thrust levels IDLE
• Wheels spin up to 60kts
• Gear compression on touch down

Question 10

Maximum altitude for flap extension

Answer 10

20,000 ft

Question 11

How are the leading edge lift devices controlled?

Answer 11

Automatically through trailing edge flap selection

Leading edge Flaps always fully extend, leading edge slats will extend according to trailing edge flap setting

Question 12

When is auto slat function enabled?

Answer 12

At high angles of attack during take off and approach to landing, or if entering a stall condition.
and,
Flap position 1, 2 and 5 (1-25 on 800 SFP)

Question 13

How does trailing edge flap relief work to reduce forces on flaps at high configuration speeds?

Answer 13

With flaps set at 10-40 flaps will automatically retract to next lower flap setting at if speeds are exceeded and will automatically extend back once speed is lowered to within tolerances