900 Flight Controls

Question 1

The two types of spoilers on the 900 are the,

Answer 1

Outboard spoilers/spoilerons

Inboard spoilers/flight spoilers

Question 2

The multi function spoilers are used for?

Answer 2

Assisting the ailerons for turn coordination as well as used for ground lift dumping.

Question 5

What’s drives the flaps?

Answer 5

a PDU

Question 6

The emergency flap switch selects the flaps to?

Answer 6

20°

Actuated by the SFECU

Under 230 kn

Question 7

What’s commands the PDU to deploy or retract the slats and flaps?

Answer 7

The SFECU’s

Slat/flaps electronic control units

Question 8

When do we have half speed flaps?

Answer 8

When one of the two PDU’s fail

Question 9

Each spoiler is actuated by?

Answer 9

A single electro hydraulic PCU

Power control unit

Question 10

What controls spoiler operation?

Answer 10

Spoiler stabilizer control units(SSCU)

2-dual channel

Question 11

Roll assist is provided by?

Answer 11

Multi functional spoilers

Question 12

Primary flights controls?

Answer 12

Ailerons
Rudder
Elevators
Spoilerons

Question 13

Aileron.. Autopilot is connected to which side?

Answer 13

First officer side

Question 14

How many PCU’s Power the ailerons?

Answer 14

2/side

Hydraulic

Mechanically controlled by either control wheel

Question 15

Function of the flutter dampers?

Answer 15

Prevent surface flutter in the event of hydraulic fluid loss at the PCUs during flight

Gust lock function on the ground

Question 16

If roll disconnect handle is pulled?

Answer 16

Unaffected aileron and opposite side spoileron

20 seconds…ROLL SEL
SPOILERON ROLL CAUTION

press ROLL SEL on operable side
( allows use of both spoilerons)

Question 17

Aileron AP servo connected to?

Answer 17

Rt elevator stystem

Question 18

What automatically controls operation of the spoilers?

Answer 18

SSCU’s

Spoiler stabilizer control units

Question 19

Ailerons..
Operated?

Controlled?

Answer 19

Electrically operated

Manually controlled

Question 20

Control jam of rudder?

Answer 20

Pedals remain operable through anti-jam mechanisms

Question 21

Each yaw damper response to inputs from

Answer 21

One flight control computer

One yaw damper must be engaged for the autopilot

Question 22

Stall protection system is connected to which side?

Answer 22

Right elevator system

Question 23

Autopilot is connected to which elevator system?

Answer 23

Left elevator system

Question 24

4 modes to the SSCU

Answer 24

Manual trim

Autopilot trim
Auto trim( flaps extended or retracted)

Mach trim(for pitch down tendencies)

Question 25

How many PCU’s per spoiler?

Answer 25

1 PCU /spoiler

Question 26

When is roll assist used?

Answer 26

At low speeds

Question 27

When aircraft approaches a high angle of attack, The stall protection computer well?

Answer 27

Stick shaker Continuous ignition Disengage autopilot

Question 28

To activate the stick pusher?

Answer 28

Both switches must be selected to on

Question 31

Horiz stab trim priority?

Answer 31

``` Pilot Copilot Autopilot Autotrim Mach trim ```

Question 32

With AP engaged, high rate of horiz trim mvmt occurs when?

Answer 32

When. Flaps are extending or retracting

Question 33

Mach trim oprates when?

Answer 33

Autopilot off and no pilot trim commands inputted

Question 34

If PCU runaway? Remaining PCU's?

Answer 34

Remaining PCUs override runaway

Question 35

Yaw damps controlled by?

Answer 35

FCCs

Question 36

Bute door?

Answer 36

Directs airflow over flaps leafing edge vane

Question 37

Btms displayed?

Answer 37

Gear and flaps indications

Question 38

How are the ailerons connected

Answer 38

The ailerons are directly connected to the control yoke through linkage and police

Question 39

How many aileron Flutter dampers for aileron?

Answer 39

1

Question 40

When are Fletcher dampers visible on the synoptic page?

Answer 40

Only when failed

Question 41

How many your dampers needed for the autopilot

Answer 41

1

Question 42

Is there a memory item for uncommitted YAW?

Answer 42

Yes

Question 43

How many PCU suse for spoiler!

Answer 43

1

Question 44

How is the aileron trim switch controlled and operated?

Answer 44

Electronically controlled Electronically operated

Question 45

Aileron trim indications on the synoptic page... Color on the ground for neutral position? In-flight?

Answer 45

Indications green for neutral position on the ground White once airborne regardless of setting

Question 46

Function of Bute doors?

Answer 46

Direct air flow over the flaps leading edge then

Question 47

Where are the two gates on the flap lever?

Answer 47

8° retraction 20° extension

Question 48

When do the slat flap position indications up here?

Answer 48

Flaps out a zero Or Landing gear extended BTMS in red range

Question 49

Is there any to direct linkage for the multifunction spoilers?

Answer 49

No Fly by wire controlled no direct linkage Electronic. Signals from the SSCU

Question 50

What do tge PCUs do?

Answer 50

Translate control yoke movements into hydraulic actuation of the ailerons

Question 51

Are the ailerons independent?

Answer 51

Can be disconnected by a disconnect handle

Question 52

When the ailerons are disconnected who controls what??

Answer 52

Captain controls left aileron and right MFS FO controls right aileron and left MFS

Question 53

How many yards dampers needed for autopilot

Answer 53

One-yard damper needs to be engaged for the autopilot to engage

Question 54

MFS?

Answer 54

Flight spoilers And Spoilerons

Question 55

Slowest rate of trim?

Answer 55

Mach trim | fastest=pilot manual trim

Question 56

Slats actuated?

Answer 56

Electrically(pdu)

Question 57

Bute doors?

Answer 57

Direct airflow over flaps leading edge vane

Question 58

Trim clacker??

Answer 58

Mire than 3 seconds

Question 59

Mach trim avail abv?

Answer 59

.40

Question 60

Where is the primary feel unit located?

Answer 60

First officers rudder pedal assembly

Question 61

Each elevator system is hydraulically powered by how many PCUs

Answer 61

3

Question 62

How many stab channels need to be engaged for Mach | trim

Answer 62

One channel must be engaged