Flight controls 747-400

Question 1

Aileron lockout system.

When is it locked, and when is it inhibited?

Answer 1

Locked above 235Kts and inhibited with flaps extended.

Question 2

What happends to the artificial elevator feel force if you loose hyd system 2 and 3?

Answer 2

Feelforce is by springs, and airspeed reference is lost.

Question 3

Describe the elevator artificial feel force.

Answer 3

Powered by hydraulic systems 2 and 3. Increasing force with increase in airspeed.

Question 4

Which part of the elevator system is inoperative with the loss of hyd system 1?

Answer 4

The left outboard elevator.

Question 5

With the loss of hyd system 3, what happens to the upper yaw damper?

Answer 5

The upper yaw damper fails.

Question 6

During flap extension hyd system 4 fails. What happens to the TE flaps?

Answer 6

The outboard TE flaps will operate electrically on secondary and the inboard TE flaps would operate hydraulically on the primary.

Question 7

With the loss of Hyd Sys 4, when deflecting the elevator, what will you see on the status page?

Answer 7

Only the left elevator would be indicated.

Question 8

In flight, pulling the speedbrake lever to flight detent will show what on the status page?

Answer 8

Left spoiler up, right spoiler down.

Question 9

What happens to the trim rate if the stab trim cutout switch for hyd sys 3 is in the cutout position?

Answer 9

Half trim rate for alternate and control wheel trim.

Question 10

Where in the flap lever are the gates and their purpose?

Answer 10

1 and 20
1 to prevent retraction of LE flaps
20 to prevent retraction of TE during G/A past G/A setting.

Question 11

When the SPEEDBRAKE lever is pulled in flight, what spoilers extend?

Answer 11

All 4 inboard spoilers.

Question 12

Up to what flaps position should the speedbrakes be used?

Answer 12

Up to flaps 10 only.

Question 13

What flaps are extended in position 1?

Answer 13

All inboard LE flaps only.

Question 14

What flaps are extended in position 5?

Answer 14

All LE flaps and position 5 for TE flaps.

Question 15

What trim is inhibited during autoland?

Answer 15

The stabilizer trim on the yoke.

Question 16

What is the FLAP Load relief function?

Answer 16

A protection against excessive airload when flaps lever is at 30 or 25 position. It retracts flaps to 25 or 20 as appropriate if the max speed is exceeded.

Question 17

What are the speedbrake limitations with flaps extended?

Answer 17

No speedbrakes with flaps extended past 10.

Question 18

When will you get the > SPEEDBRAKES EXT indication on primary EICAS?

Answer 18

1) Speed brake lever is beyond ARM
 and The flaps in the landing position.
or
2) RA between 800 and 15ft.
or
3) Two or more throttles out of idle.

Question 19

What is the G/A protection?

Answer 19

If Throttles 1 or 3 come out of idle then the spoilers will retract for go around.

Question 20

What happens in the secondary flap control mode?

Answer 20

The faulty flaps groups are driver electrically.

Question 21

If the inboard TE flaps extension failed due to asymmetry, what happens to the outboard TE flaps?

Answer 21

They remain in primary mode.

Question 22

The stabilizer is hydraulically powered by what hyd systems?

Answer 22

Hyd sys 2 and 3.

Question 23

How can you stop an unscheduled stab movement immediately?

Answer 23

Move the control column in the opposite direction of movement.

Question 24

During a jammed stab, what is required?

Answer 24

Only the elevator works and a higher approach speed is required.

Question 25

What consequences does a rudder ration changer failure have on the flight?

Answer 25

At lower airspeeds, less than normal deflection of rudder may be available.

Question 26

During > YAW DAMPER LWR, which hydraulic system is shut off?

Answer 26

HYD 2

Question 27

What hyd systems operate what yaw damper?

Answer 27

System 2 = lower (2 is lower than 3)

System 3 = Higher

Question 28

Will the AILERON LOCKOUT message below 235kts result in restrictions for the approach?

Answer 28

Yes, Max crosswind component is reduced.

Question 29

What kind of effect has the AIRLERON LOCKOUT message have if displayed during approach?

Answer 29

Only inboard are working. Max crosswind reduced.