Flight Controls

Question 1

All primary flight controls except for the ailerons are ____?

Answer 1

Fly-By-Wire. Electronically activated, hydraulically actuated

Question 2

What are the secondary flight controls?

Answer 2

Trim Stabilizer, Flaps/Slats, Spoilers

Question 3

How many hydraulic sources are there for the rudder and elevator?

Answer 3

2 actuators and 2 different hydraulic systems. Only one actuator is active at a time (alternating each day) to allow for even wear

Question 4

Briefly explain the signal path for a pitch change from control column to elevator in normal mode. Direct mode?

Answer 4

Control Column -> ACE -> FCM -> ACE -> PCU

Control Column -> ACE -> PCU

Question 5

What is the purpose of the ACE?

Answer 5

Connects the control column to the respective control surface electronically

Question 6

What is the purpose of the FCM?

Answer 6

Augments pilot inputs with software limits and higher level functions

Question 7

What is the purpose of the FCM?

Answer 7

Augments pilot inputs with software limits and higher level functions

Question 8

Name a few important Higher Level Functions

Answer 8

Yaw damper, AoA limiting, AFCS (Autopilot)

Question 9

What does Shaker Cutout do? Can we fly with the PLIs?

Answer 9

Pushed In Cuts the shaker, Pushed out shaker channel active and will activate when nearing stalling AOA or when pitched to the PLIs. Operations with the PLIs continuously displayed is prohibited

Question 10

Flaps are ___ actuated through the SF-ACE.

Answer 10

Electrically. Two Power Drive Units (PDUs)

Question 11

What do amber and dashed indications mean on EIcas

Answer 11

Amber means surface has failed, dashed means position is unknown

Question 12

Do the Slats/Flaps have protection logic? If so, what is it?

Answer 12

Skew Protection (prevents asymmetrical extension) Strike Protection (prevents extension if force is too great to extend)

Question 13

What is the difference between Flaps 4 and Flaps 5?

Answer 13

The only difference is that there is gate and Flap 5 is used for landing

Question 14

What flap settings are used for takeoff? Landing? Go around?

Answer 14

T/O: 1, 2, and 4

Landing: 5 and Full

Go Around: 2 if Flaps were at 5, 4 if flaps were at Full

Question 15

Maximum flap speeds are…

Answer 15

230, 215, 200, 180, 165 respectively.

Question 16

Speed brakes are ___ activated and ____ actuated.

Answer 16

Speed brakes are ___ activated and ____ actuated.

Question 17

What is the difference between Ground Spoilers and Multifunction Spoilers?

Answer 17

Ground spoilers only activate on the ground MF Spoilers can be roll spoilers, speed brakes, and ground spoilers

Question 18

Under what three scenarios will the speed brakes automatically retract in flight?

Answer 18

Airspeed slower than 180

flaps greater than 1,

thrust lever greater than 70 degrees TLA (for go around)

Question 19

After landing, when will the GRD spoiler panels rise?

Answer 19

Spoilers must be in Normal MODE
Weight on Wheels
Wheel speed is above 45 knots or airspeed is above 60 knots
TLA is below 26 degrees

Question 20

When will the GRD spoilers retract? How about in direct mode?

Answer 20

When wheel speed is below 45knots for 5 seconds
If TLA is >35 degrees
GRD spoilers are not available in direct mode

Question 21

All pilot trim commands are limited to ___ seconds before the trim cuts out. What happens at 7 seconds if half the switch is activated?

Answer 21

3 seconds

will get aural trim caution for pitch trim The switch is disabled

Question 22

Trim priority order?

Answer 22

Pedestal (Backup), Captain, FO, Autopilot

Question 23

Which trim is not commanded by the autopilot?

Answer 23

Yaw trim

Question 24

What does pressing SYS 1 CUTOUT and SYS 2 CUTOUTbuttons do?

Answer 24

Disables the HS-ACE Channel 1 & 2

Question 25

Disables the HS-ACE Channel 1 & 2

Answer 25

Separates the control columns and the pilot with the non-jammed side retains control on their side.

Question 26

What is the electrical flight control PBIT?

Answer 26

Provides detection of out-of-tolerance conditions and failures on the FCMs, P-ACE, and SF ACEs. Automatically performed after the airplane has AC power and takes 3 minutes to complete.

Question 26

What is the electrical flight control PBIT?

Answer 26

Provides detection of out-of-tolerance conditions and failures on the FCMs, P-ACE, and SF ACEs. Automatically performed after the airplane has AC power and takes 3 minutes to complete.

Question 27

How long are the PBITs valid for?

Answer 27

50 hours

Question 28

What interrupts the electrical flight control PBIT?

Answer 28

Any hydraulic pumps running, Flight control mode switches are cycled, or AC power is interrupted