Flight Controls

Question 1

FCECU 1 (Flight Control Electronic Control Units)

• Ground spoilers
• Outboard MFS
• HSTA
• No 1 rudder actuator

Answer 1

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Question 2

FCECU 2

• Inboard MFS
• No 2 rudder actuator
• Elevator Q-feel
• Flap HCM

Answer 2

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Question 3

AILERONS

• Mechanical
• Trim tab on left aileron (electro-mechanical)
• Gear tab both ailerons
• +/-15 deg
• Aileron disconnect on pilot yoke
• Mechanically disconnects pilot’s yoke only (control via roll spoilers)
• Control via MFS through RVDTs
• Eddy current dampener -prevent sudden jerk
• Q-Feel
• Auto-pilot actuator
• Gust lock – throttle and aileron

Answer 3

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Question 4

AILERONS

• Mechanical
• Trim tab on left aileron (electro-mechanical)
• Gear tab both ailerons
• +/-15 deg
• Aileron disconnect on pilot yoke
• Mechanically disconnects pilot’s yoke only (control via roll spoilers)
• Control via MFS through RVDTs
• Eddy current dampener -prevent sudden jerk
• Q-Feel
• Auto-pilot actuator
• Gust lock – throttle and aileron

Answer 4

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Question 5

ELEVATOR

• Hydraulic boosted (hydro mechanical)
• Both hydraulic systems
• Manual reversion
• 95lbs differential force to separate
• Q-Feel – hyd unit acts against artificial feel as speed increases – prevent overstress
• Trim 1 jack screw two electric motors, alternate half speed
• Captain trim overrides copilot

Answer 5

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Question 6

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Answer 6

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Question 7

RUDDER

• Hydraulic fly-by-wire
• Both hydraulic systems
• 4 channels flight control
• Trim – reset zero point
• Auto compensation for asymmetric trust, Thrust Compensation (TCM) mode

Answer 7

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Question 8

FLAPS

• Command-by-wire, hydraulically powered (L Sys)
• Flap Hydraulic Control Module (HCM)
• Slotted fowler
• Flap Override

Answer 8

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Question 9

HORIZONTAL STABILIZER

• Electronically controlled, electrically actuated
• Horizontal Stabilizer Trim Actuator (HSTA)

Answer 9

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Question 10

SPOILERS

• 3 panels per wing
• Fly-by-wire, hydraulic actuated
• Outboard – roll assist, speed brakes 45, ground spoiler 55 (L Hyd)
• Midboard – roll assist, speed brakes 45, ground spoiler 55 (R Hyd)
• Inboard Ground spoilers only 55 (L Hyd)
• 3 separate computers (roll assist, ground spoiler, air brakes)
• Aileron disconnect, roll assist up to 55
• Ground spoilers auto extend and retract, manual inhibit

Answer 10

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Question 11

SPOILERS

• No. of panels per wing 3
• Fly-by-wire, hydraulic actuated
• 3 separate computers (roll assist, ground spoiler, air brakes)
• Ground spoilers auto extend and retract, manual inhibit

Answer 11

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Question 12

SPOILERS

•  Outboard – 
roll assist
speed brakes 45 deg
ground spoiler 55 deg (L Hyd)
•  Midboard – 
roll assist
speed brakes 45
ground spoiler 55 (R Hyd)
•  Inboard 
Ground spoilers only 55 (L Hyd)
•  Aileron disconnect, roll assist up to 55

Answer 12

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Question 13

GUST LOCK

• ____ and _____ only
• Elevator and rudder – _______

Answer 13

GUST LOCK

• Ailerons and thrust levers only
• Elevator and rudder – trapped hyd fluid in servo

Question 14

CONTROL CHECK

• Carry out when flaps position – 10 or 20
• Roll left, brakes out L 35 R 10, roll right, retract brakes, neutral (if no flaps opposite side no 10)
• CAS logic pitch only to register check. Forward then aft slowly.

Answer 14

CONTROL CHECK

• Carry out when flaps position – 10 or 20
• Roll left, brakes out L 35 R 10, roll right, retract brakes, neutral (if no flaps opposite side no 10)
• CAS logic pitch only to register check. Forward then aft slowly.

Question 15

STALL PROTECTION SYSTEM (SPS)

• Vref+5 –
• Under speed mode (v3.6 no AT engagement) Amber CAS –
• PLI –
• Ignition ON –
• Stick shaker –
• Stick pusher –
• Stick pusher inhibited –

Answer 15

STALL PROTECTION SYSTEM (SPS)

• Vref+5 – 0.60
• Under speed mode (v3.6 no AT engagement) Amber CAS – 0.78
• PLI – 0.80
• Ignition ON – 0.85
• Stick shaker – 0.90
• Stick pusher – 1.00 (AT AP disengaged)
• Stick pusher inhibited – < 100 ft or > 200 kts

Question 16

LIMITATIONS

• Mach Trim inop –
• Vmc Air –
• Vmc Landing –
• Vmc Ground –
• Yaw damper inop –

Answer 16

LIMITATIONS

• Mach Trim inop – 340/0.77
• Vmc Air – 98
• Vmc Landing – 98
• Vmc Ground – 95
• Yaw damper inop – 250/20000ft

Question 17

LIMITATIONS - G LOAD

• Flaps up –
• Flaps down –

Answer 17

LIMITATIONS - G LOAD

• Flaps up – -1.0 to 2.6G
• Flaps down – 0.0 to 2.0G

Question 18

LIMITATIONS - FLAPS

• Holding in icing is limited to –
• Flaps –
• Flaps 10 –
• Flaps 20 –
• Landing Flaps –

Answer 18

LIMITATIONS - FLAPS

• Holding in icing is limited to flaps 0
• Flaps – <20k ft
• Flaps 10 – 250
• Flaps 20 – 220
• Landing Flaps – 180