Flight Controls

Question 1

When will the MFSsAuto retract on GRD

Answer 1

1. Wheel speed < 45 kts

2. TLA moved beyond 35* after landing (G/A scenario)

Question 2

What happens when Rudder Pedals are jammed

Answer 2

Rudder Control is maintained thru the YD and Turn Coordination (FCM Function)

Question 3

What is the path between Rudder Pedals and Rudder Surface

Answer 3

Rudder Pedals > ACE with FCM inputs > PCU > Rudder Surface

Question 4

How do the FLT Controls operate when the RAT is the only AC Power source

Answer 4

1. HS Trim operates at LO speed
2. S/F system operates at LO Speed
3. S/F Position is limited to 3

Question 5

What is the Path from Trim to Horizontal Stablizer

Answer 5

Trim Priority > ACE with FCM Input > DC Electric TrimMotor > HSA > Horizontal Stabilzer

Question 6

Will the MFS function in Direct Mode

Answer 6

Yes, for Roll only and at a Default Fixed Gain

Question 7

How are the FLT Controls Trimmed

Answer 7

Roll and Yaw = Surface repositioned to a new “Neutral Position”

Question 8

The ________ is the Communication link between the FCM’s and the P-ACE’s

Answer 8

Controller Area Network Bus (CAN BUS)

Question 9

How are the P-ACE’s connected to the FCM’s

Answer 9

FCM’s are connected to Controller Area Network Bus (CAN BUS) to provide inputs to 3 P-ACE’s

Question 10

Where are FCM’s 1 & 2 located

Answer 10

MAU 1 in the FWD E-Bay

Question 11

Pitch Trim Priority

Answer 11

1. Backup Trim
2. CA Trim
3. FO Trim
4. AP Trim

Question 12

What are High Level Functions (FCM) for the Rudder

Answer 12

1. Yaw Damp
2. Turn Coordination
3. Gain on Airspeed

Question 13

Where are the S-ACE’s (Spoilers) located

Answer 13

Located in FCM #1, FCM #3, FCM #4 which have wiring to control the S-ACE’s

Question 14

Will Speed Brakes/Spoilers work in Direct Mode

Answer 14

NO

Question 15

What is Max Rudder deflection

Answer 15

30* either direction

Question 16

When do Speed Brakes 3,4,5 Auto Retract in FLT

Answer 16

1. S/F of 2 or >
2. Airspeed < 180 kts
3. TLA > 70*

Question 17

How do you know if you have a FLT Control Problem

Answer 17

FLT Controls Synoptic Page (FLT Control will be Yellow)

Question 18

When will the Spoilers 1-5 Auto Deploy

Answer 18

1. WoW
2. Wheel Speed > 45 kts or Airspeed > 60 kts
3. TLA < 26*

Question 19

What is Path from Control Wheel to Elevator

Answer 19

Control Wheel > ACE with FCM input > PCU > Elevator Surface

Question 20

What is Path from Control Wheel to Aileron Surface

Answer 20

Control Wheel > PCU > Aileron Surface

Question 21

What is Path from Control Wheel to S/F Surface

Answer 21

Slat/Flap lever > 2 SF-ACE > PDU > Flap Surface

Question 22

What Actuator controls Pitch Trim

Answer 22

HS-ACE Communicates with 2 DC Electric Trim Motors (Active/Standby motors) that drive the Horizontal Stabilizer Actuator (HSA)

Question 23

How long does the FBW Backup Battery last

Answer 23

15 minutes and is charged by DC ESS Bus 3

Question 24

What are 3 Higher Level Functions for Pitch Control

Answer 24

1. Gain on Airspeed
2. Elevator Thrust Compensation
3. AoA Limiting

Question 25

What are some of the ways that the FLT Controls can go into Direct Mode

Answer 25

1. Automatic detection of Channel Failure

2. Manually selected of FLT Controls Mode Panel Loss of Airspeed Data

Question 26

What happens to System logic when you go into Direct Mode

Answer 26

FCM’s are removed from the Control Loop

Question 27

Where is FCM 3 & 4 located

Answer 27

MAU 3 in Mid E-Bay

Question 28

There are how many SF-ACE’s

Answer 28

2 SF-ACE’s located in Mid E-Bay (1 for Slats, 1 for Flaps)

Question 29

How many P-ACE’s are there

Answer 29

3 Primary Actuator Control Electronics (2 FWD E-Bay, 1 AFT E-Bay) and controls Elevators and Rudders. Each has 2 Channels (Active and Standby)

Question 30

What are Secondary FLT Controls

Answer 30

1. Horizontal Stabilizer
2. Flaps and Slats
3. Multi Function Spoilers (MFS)
4. GRD Spoilers

Question 31

What happens when you Pull the Elevator Disconnect Handle

Answer 31

Isolates CA and FO Control Columns for Elevator Control

Question 32

What does Pressing one of the 3 FLT Control Mode Panel Buttons do

Answer 32

Brings the Respective FLT Control into Direct Mode

Question 33

How many ACE’s and FCM’s are there

Answer 33

9 ACE’s

4 FCM’s