Flight Controls

Question 1

Which control column is directly connected to the spoilers?

Answer 1

Captains

Question 2

What happens to the pressure to the Rudder actuators as the speed increases?

Answer 2

As speed increase, FCECU reduces the hydraulic pressure available to the PCU’s. Inputs from either Rudder pedals cause less Rudder deflection.

Question 3

What controls the pressure to the Rudder actuator?

Answer 3

FCECU along with airspeed data from the ADC’s

Question 4

What will happen if Pressure is lost on one Rudder actuator?

Answer 4

• # 1 RUD HYD or #2 RUD HYD caution light will come on.

- FCECU will now modify the regulated hyd pressure to the operating PCU to maintain the required Rudder authority.

Question 5

What will happen if both Rudder PUSH OFF’s are pressed at the same time?

Answer 5

Both PUSH advisory lights come on, and neither Rudder PCU will be depressurized.

(Normally, pushing either RUD 1 or RUD 2 depressurizes the upper or lower Rudder PCU, respectively.)

Question 6

When are the Outboard spoilers available?

Answer 6

At airspeeds less than 165KIAS

Question 7

What is the indication of an aileron cable jam?

Answer 7

When Roll Disc handle is pulled and turned 90°, the captains controls are the free controls.

Question 8

What action should be taken in the event of an aileron cable jam?

Answer 8

ROLL CONTROL JAM QRC memory items and QRH reference items.
Memory items:
- A/P………………………………………….disengage
- Roll Disc Handle……………………..pull and turn 90°

Question 9

What will be the result after the memory items following an aileron cable jam?

Answer 9

The Captain will have roll control with the spoilers.

Question 10

What are the indications of a spoiler actuator linkage jam?

Answer 10

SPLR 1 or SPLR 2 switchlights illuminate

Question 11

What is the indication of a spoiler cable jam?

Answer 11

When the Roll Disc Handle is pulled and turned 90°, the F/O’s controls are the free controls.

Question 12

What control(s) do the gust lock lock?

Answer 12

Ailerons

Question 13

What controls the rate of pitch trim?

Answer 13

The FCECU, depending on the airspeed. Below 150KIAS, the trim actuators operate in high speed mode. At speeds more than 250 KIAS, they operate in low speed mode. The FCECU adjusts the trim rate between 150 KIAS and 250 KIAS.

The FCECU receives airspeed data from both ADC’s.

Question 14

When does the ELEV PRESS caution light illuminate?

Answer 14

When all three hydraulic systems are operating at the same time.( #1, #2, STBY)

Question 15

What does the ELEV FEEL caution light indicate?

Answer 15

• One pitch feel actuator has FAILED.
• if airspeed #1 not equal to airspeed #2-17kts (IAS MISMATCH message on PFD), RUD CTRL, SPLR OUTBD, PITCH TRIM caution lights also come on, or
• Normal acceleration is not valid