Flight Controls

Question 1

Stabilizer trim brake

Answer 1

Off and Normal
Normal off light is extinguished and primary trim enabled
Push stops horizontal stabilizer movement Amber off illuminates and electrical power to the brake is removed

Question 2

Stick pusher push to inhibit light

Answer 2

during detection of imminent stall STICK PUSHER PUSH TO INHIBIT switch lights illuminate and the autopilot disconnects then abrupt forward movement of both control columns followed by stick shaker deactivation forward pressure continues until angle of attack reduced below stick shaker onset The stick shear can be stopped by

1) flight crew pulling aft on the controls until reduced below shaker onset
2) pushing stick pusher push to inhibit light

3) inhibited by decreasing performance windshear

Question 3

HYD CONT RUDDER

Answer 3

Allows selection of manual rudder ops
If manual selected or if right hyd pressure is too low the rudder tab unlocks In manual mode the rudder pedals move the control tab on the rudder

Question 4

How slats positioned

Answer 4

5 slats on each wing operate as a single unit. Cables connected to hyd drums powered by left and right either can operate. Slats controlled with slat flap handle up/ret and EXT

Question 5

Meaning of SLAT DISAG level 2

Answer 5

slat disagree with each other or with commanded position

Question 6

How stab is trimmed using primary trim switches

Answer 6

when both moved primary trim brake is released Warning horn sounds stab moves more than one degree also “stabilizer motion” sounds

Question 7

difference primary and alternate stabilizer trim

Answer 7

Alternate trim slower than primary used by autopilot

Question 8

Stabilizer trim position displayed

Answer 8

top of the SD engine synoptic
green bar displays range
Position bug displays stab relative position
Digital readout displays the exact stab position
also displayed at the top of the config page above airplane symbol

Question 9

how elevators normally positioned for pitch control

Answer 9

by control tabs with variable load feel artificial load feel

Question 10

explain how pitch control is maintained if control columns jam

Answer 10

override mechanism on the torque tube allows to operate independently should either jam
130 lbs to disconnect bang
maintenance needed to reconnect

Question 11

what is function of elevator AUG system

Answer 11

2 hyd boost cylinders augment elevator during deep stall recovery additional nose down capability
left hydraulic system with accumulator backup
Displayed on configuration page

Question 12

roll control with ailerons and spoilers

Answer 12

control tabs connected to control wheels
greater roll with more than 5 deg spoilers extend a proportionate amount
Trimmed by trim tab outboard of control tab trim switches locate on pedestal

Question 13

How are ground spoilers automatically deployed

Answer 13

spoilers operate automatically on landing at main wheel spin-up or a ground shift signal from the nose gear. During rejected takeoff selecting reverse thrust deploys the spoilers If throttles are advanced the spoilers automatically retract

Question 14

Rudder limiting

Answer 14

Primary is mechanical system operated by ram air pressure from a pitot tube on vertical stab
Second controlled by flight control computer backup if primary fails operating as a function of airspeed engages at predetermined airspeeds

Question 15

How flap and Slat position displayed

Answer 15

CONFIGURATION page displayed with flap setting

Also on PFD up or down arrow indication direction of flap movement (not displayed when reach commanded position

Question 16

function of the aircraft spoilers

Answer 16

1) Roll augmentation
2)Inflight speed brakes
3) Decrease lift and increase drag during rejected takeoff or landing
spoilers are electrically controlled by the SECU and hydraulically powered

Question 17

How many Tabs on elevator

Answer 17

Control Tabs and Geared tabs