B757 Flight Controls

Question 1

Why does the Yaw Damper become INOP?

Answer 1

1. Fault
2. switch off
3. IRS not aligned

Question 2

How many spoilers per wing?

Answer 2

6

Question 3

SPEEDBRAKES

Answer 3

1. Flaps are in the landing position

2. RA 800 feet or below

Question 4

Which are the takeoff flap positions?

Answer 4

1, 5, 15 & 20

Question 5

Alternate flaps switches do what?

Answer 5

1. Arms the LE or TE flap alternate drive unit

2. Shuts off hydraulic power to both the flap and slat drive systems

Question 6

AUTO BRAKES - DISARM

Answer 6

1. Disengages the auto brake system

2. Releases brake pressure

Question 7

Which hydraulic systems supply pressure to the Rudder?

Answer 7

All three

Question 8

What does the Rudder Ratio System do?

Answer 8

Limits Rudder deflection at high speeds.

Question 9

Which hydraulic system powers the Rudder Ratio Changer?

Answer 9

Left Hydraulic System

Question 10

When will the speedbrakes deploy if they are not armed prior to landing?

Answer 10

On the ground when either thrust lever is moved to the reverse idle detent.

Question 11

What happens to the Slats and Flaps @Flaps 1?

Answer 11

1. Slats move to the midrange

2. Flaps extend to 1

Question 12

What does the Auto Slat System do?

Answer 12

Automatically extends the slats from the midrange to fully extended landing position during a Stall Warning.

Question 13

When do the Slats move to the landing position?

Answer 13

Flaps 25

Question 14

Flaps Load Relief is armed when and does what?

Answer 14

Flaps are extended to 30 - armed
Airspeed placard Limit exceeded
Flaps retract to 25 position then back once exceedence

Question 15

TRAILING

EDGE

Answer 15

1. Flap Disagree commanded position
2. Flap asymmetry
3. Flap lever not in a detent for an extended period
4. Flap Load Relief is INOP
   Hydraulic power shut off with disagree or asymmetry

Question 16

LEADING

EDGE

Answer 16

1. Slat disagree with commanded position
2. Slat asymmetry
3. Hydraulic power is shut off

Question 17

What happens when either the ALTN LE or TE button is pushed?

Answer 17

1. Arms the LE or TE alternate drive unit

2. Shuts off hydraulic power to both LE and TE drive units

Question 18

Is any asymmetry or Load Relief protection available when using ALTN extension?

Answer 18

Only LE have asymmetry protection using ALTN

Question 19

When do slats extend to landing position with ALTN extension?

Answer 19

Flaps 20 selected

Question 20

How do you override a Jammed Control ?

Answer 20

1. Sufficient forward pressure or
   Sufficient aft pressure
2. Column disconnects
3. Use free control column for pitch inputs

Question 21

Stabilizer Trim Motors are powered?

Answer 21

Hydraulically

Question 22

At what rate will the autopilot trim the stabilizer?

Answer 22

1/2 rate using only one stabilizer Trim control module.

Question 23

Stabilizer Trim “OFF” flag?

Answer 23

Stabilizer Trim is INOP

Question 24

What do STAB TRIM CUTOUT switches do in the cutout position?

Answer 24

Removes hydraulic power to the respective Stabilizer Trim Control Module.

Question 25

What happens if a control column input is made opposing the direction of the stabilizer trim?

Answer 25

Trim commands are interrupted.

Question 26

How are the ailerons trimmed?

Answer 26

Dual aileron trim switches on the aft pedestal. Must be pushed together to command trim changes.

Question 27

What type of trim will override the input of Electrical Trim switches on the control wheel?

Answer 27

1. Alternate Trim Lever | 2. ALTN STAB TRIM switch input

Question 28

Which hydraulics power the stabilizer?

Answer 28

2 1. Center 2. Right

Question 29

How many stabilizer Trim modules are there?

Answer 29

2 | One for each source

Question 30

How many modes of stabilizer Trim control are there?

Answer 30

3 1. Electic 2. Alternate 3. Automatic

Question 31

GND PROX SYS EICAS

Answer 31

FLAP OVRD selected for more than 60 | seconds airspeed greater than 250

Question 32

GND PROX SYS EICAS

Answer 32

GEAR OVRD selected for more than 60 seconds airspeed greater than 290 Ko

Question 33

ALTN STAB TRIM switches

Answer 33

* Electrically signal Stab movement | * neutralize all other stab trim commands

Question 34

YAW DAMPER INOP

Answer 34

* fault * switch off * IRS not aligned

Question 35

MACH | SPD TRIM

Answer 35

Mach/Speed Trim system is inoperative.

Question 36

RUDDER | RATIO

Answer 36

1. Rudder Ratio System INOP | 2. left hydraulic system pressure low

Question 37

SPEED | BRAKES

Answer 37

SPEEDBRAKES extended <800 ft RA with Flaps in landing position

Question 38

What causes the the SPEED BRAKES light to illuminate?

Answer 38

2 conditions 1. Flaps in the landing position with speed brakes extended 2. RA 800 feet or below with speedbrakes extended

Question 39

SPOILERS

Answer 39

One or more spoilers pairs are inop or not in the commanded position

Question 40

STAB TRIM

Answer 40

Electric and alternate stabilizer trim is 1/2 the normal rate Use of alternate allows

Question 41

UNSCHED | STAB TRIM

Answer 41

1. Uncommanded stab motion detected 2. Runaway stab motion with no pilot input 3. Wrong way Stab moves opposite of autopilot or Mach speed trim. 4. Use of alternate Trim with an autopilot engaged.

Question 42

AUTO SPDBRK

Answer 42

Fault detected may result in loss of AUTO SPDBRK extension

Question 43

Mach Speed Trim SYS

Answer 43

Controls stab when autopilot not engaged • Improves speed stability • electric, alternate or autopilot trimming overrides Mach speed trim

Question 44

Aileron trimming w/autopilot

Answer 44

Changed neutral point without showing it on the scale.

Question 45

How many spoilers per wing and their use?

Answer 45

6 Speedbrakes Supplementary roll control

Question 46

What are the TO FLAP settings

Answer 46

1 5 15 20

Question 47

LDG FLAP settings

Answer 47

20 - non normal 25 30

Question 48

Flap gates

Answer 48

1 - inadvertent retraction of slats 20 - inadvertent retraction of flaps during a go around

Question 49

Electric trimming with autopilot

Answer 49

1 autopilot - causes autopilot to disengage More than ONE AP- inhibited

Question 50

Alternate trimming with AP

Answer 50

Does not cause disengagement