Autoflight/Flight Controls

Question 1

Are both Flight Guidance Modules required for autoflight?

Answer 1

Yes, but 1 can provide FD

Question 2

The AP Pitch Trim function operates at two speeds:

Answer 2

High speed for CAS below 180 knots

Low speed for CAS above 180 knots

Question 3

FCECU stands for

Answer 3

Flight control electronic control unit, single unit with two channels

Question 4

How many PCUs control each elevator?

Answer 4

3 power control units per elevator, 6 total

Question 5

What hydraulic systems power which PCU?

Answer 5

1 outer
2 center
3 inboard

Question 6

What is the purpose of the overload bungee in the elevator?

Answer 6

They will break to ensure that PCU does not jam the elevator

Question 7

What gives the elevator gust protection?

Answer 7

3 hydraulic compensator keeps elevator locked

Question 8

How does the FCECU control trim rate

Answer 8

Based on airspeed

Question 9

What will cause an elevator asymmetry?

Answer 9

Position disagreement of 5 degrees below 180 kts or 1.5 degrees above 181 kts between left and right elevator surfaces

Question 10

What gives you an elevator feel caution light?

Answer 10

position disagreement between left and right pfu’s

Question 11

Total travel of rudder

Answer 11

18 degrees on fore section

36 degrees on aft section

Question 12

Where are the rudder PCU’s located?

Answer 12

PCU 1 lower

PCU 2 upper

Question 13

Describe the rudder system

Answer 13

mechanically activated, hydraulically actuated, does not have two independent sides, has two PCUs in tail

Question 14

Is rudder travel mechanically limited?

Answer 14

Rudder travel is mechanically limited (approx 12 degrees left or right) when flap selector is in the zero degree detent (24 degrees for aft section of rudder)

Question 15

Is the rudder feel and trim unit controlled by the FCECU?

Answer 15

No, its a mechanical spring

Question 16

How does the FCECU interact with the rudder system?

Answer 16

Interacts with the PCU to gather rudder trim indication

Question 17

Yaw damp authority is approx

Answer 17

4.5 degrees max of rudder deflection either side

Question 18

How are ailerons operated?

Answer 18

Mechanically actuated via FO control column

Question 19

What tabs do you have on ailerons?

Answer 19

Geared tab on either side and ground adjustable tab on Right. Move opposite of deflection.

Question 20

What hyd system power inboard and outboard spoilers?

Answer 20

#1 Hyd System powers inboard spoilers
#2 Hyd System powers outboard spoilers
Outboard spoilers are deactivated above 170 kts

Question 21

How do the outboard spoilers work?

Answer 21

FCECU commands actuator unload valve to dump pressure to outboard spoilers above 170 kts

Question 22

Spoiler operation modes

Answer 22

Flight Mode and Taxi/Ground Mode

Flight taxi switch, pwr lever position, wt on wheels

Question 23

What hyd system powers flaps?

Answer 23

Hyd system 1

Question 24

AHARS alignment time

Answer 24

60 s ground

90 s flight

Question 25

What screens function with battery power only?

Answer 25

MFD1
ED
MFD1 Reversion Selector
All pushbutton on ESCP

Question 26

The Flap Auto Pitch Trim feature automatically engages when all of the following conditions exist:

Answer 26

Airborne for two seconds, CAS is less than 180, AP not engaged, no operating manual pitch trim, AFCS detects flaps are moving between 15 and 35 range