Flight Controls

Question 1

How many PCU’s per aileron? Rudder? Elevator?

Answer 1

1. 2
2. 3
3. 3 per elevator

Question 2

What does the 7/900 have that the 200 calls spoilerons?

Answer 2

Multi-function spoilerons. They move in conjunction at low speeds for greater roll response.

Question 3

What does the ROLL DISCONNECT do?

Answer 3

• Isolated the left control wheel and associated cable system from the right aileron system
• Separates the control wheel interconnect tube and advised the SECU’s (200) and SSCU’s (7/900) that the tube has been disconnected
• Single side roll control is then available

Question 4

How long after pulling the ROLL DISC handle do the amber ROLL SEL lights illuminate? Which light do you select?

Answer 4

1. 20

2. The side with the unjammed aileron

Question 5

After pressing the ROLL SEL what does the caution message turn into?

Answer 5

A “PLT ROLL CMD or CPLT ROLL CMD” advisory message

Question 6

What else will cause the advisory message to appear?

Answer 6

Activating the bungee breakout switch

Question 7

What do the Yaw Dampers do?

Answer 7

• Improve directional stability and turn coordination
• Damping out yaw oscillations “Dutch roll” tendency is controlled
• If both fail the autopilot will disconnect (AP only needs 1 to operate)

Question 8

What does the PITCH DISCONNECT do?

Answer 8

• Provides reduces pitch control (one elevator only) in the operable control surface
• A jam tolerant mechanism on each elevator PCU allows 2 operating PCU’s to overpower a jammed one

Question 9

What functions as gust locks while on the ground? (200)

Answer 9

2 Flutter dampers on each elevator

Question 10

What is the trim priority?

Answer 10

1. Pilot
2. Co-pilot
3. AP
4. Auto trim
5. MACH trim

Question 11

Where does the stall protection system (SPS) receive inputs from?

Answer 11

1. L/R AOA vanes
2. AHRS
3. Slat/Flap Position
4. WOW
5. ADC’s

Question 12

When are the flap position indications displayed?

Answer 12

When one or more exist:

1. Flaps>0
2. Landing gear not up and locked
3. BTMS in the red