Flight Controls

Question 1

What helps provide feel in control columns if a loss of hydraulic pressure occurs in the C and R system?

Answer 1

Mechanical Springs

Question 2

What are the 3 modes of stabilizer trim control?

Answer 2

Electric, Alternate and Automatic.

Question 3

What are the indications of an uncommanded stabilizer movement?

Answer 3

UNSCHED STAB TRIM light illuminates, EICAS MSG and Caution sound. Push column in opposite direction to stop runaway

Question 4

In what way does stab trim rate change?

Answer 4

The trim rate increases or decreases with respect to a/c speed.

Question 5

What does STAB TRIM light mean?

Answer 5

• one of the two stabilizer brakes has failed to release when the electric trim switches are commandnig movement
• one of the two trim motors has failed.

*causes the stabilizer to trim at 1/2 normal rate

Question 6

Can you trim with the alt trim if AP is connected? what about CA or FO trim?

Answer 6

Yes, but unschd stab trim msg will illuminate. NO will disconnect AP

Question 7

What are the two types of automatic trim occur?

Answer 7

Engaged AP or mach speed trim system when the AP is not engages. 1/2 normal rate.

Question 8

Is it normal for YAW Damper inop during aircraft wakeup?

Answer 8

Yes, until the IRS alignment completes

Question 9

What restricts the movement of the rudder during high speed flight?

Answer 9

The rudder ratio changer.

Question 10

When does SPEEDBRAKES EXT caution msg display?

Answer 10

• flaps are in landing position or

- RA is 800 ft or below

Question 11

What are some considerations when manually deploying spoilers upon landing?

Answer 11

a nose up moment may occur, which can result in a tail strike.

Question 12

When will the speedbrake lever in the armed position deploy?

Answer 12

• Hydraulic pressure exists in both landing gear truck tilt actuators
• both truck tilt actuators detect a no-tilt condition (a/c on ground)
• both thrust levers are at idle.
• speedbrakes deploy when reverse thrust is used regardless of lever position.

Question 13

Leading edge asymmetry protection is available in what type of operation?

Answer 13

Nrml or Alt

Question 14

Any time an asym or disagree flap or slat config the flap and slat hydraulic drive is shut off?

Answer 14

Yes, the one exception is when a TE FLAP DISAREE occurs if the flap lever is not in the detent for a period of time.

Question 15

What if hydraulic power is lost, how are the slats and flaps moved?

Answer 15

the a/c is equipped with an alternate drive system that uses electric motors to move the flaps and slats.

Question 16

What stall mitigation systems do the slats automatically have?

Answer 16

if in mid range they will extend in a stall to help with recovery and then return to mid range

Question 17

What is flap load relief?

Answer 17

at FLAPS 30 if airspeed is exceeded it will retract to flaps 25 until a/s returns to normal.

Question 18

-300 and 767 have what to help prevent stall?

Answer 18

A stick nudger

Question 19

767 what is an aileron lockout?

Answer 19

outboard ailerons are locked and not moveable at high airspeeds. If failure, AILERON LOCKOUT eicas.

Question 20

767ER flap load relief occurs when…

Answer 20

flaps are 25 or 30, retracts to 20.