E175 Flight Controls

Question 1

Primary Flight controls

Answer 1

Ailerons, mutlifunction spoilers, elevator, and rudder

Question 2

Secondary flight controls

Answer 2

Horizontal stabilizer, multifunction spoilers, slats/flaps, and ground spoilers

Question 3

The controls are moved via…

Answer 3

A fly-by-wire system (FBW) controls everything except for the ailerons, which are controlled via conventional cables.

Question 4

FBW system

Answer 4

• The FBW system incorporates higher-level functions for safety and to reduce pilot workload. They get
  their commands from the Flight Control Module (FCM).
• When the higher-level functions are working, the flight controls are operating in “Normal Mode”.
• When the higher-level functions are not working, the flight controls are operating in “Direct Mode”.

Question 5

The following flight controls have higher-level functions:

Answer 5

• Elevator
• Multifunction Spoilers
• Rudder
• Horizontal Stabilizer

Question 6

Pitch control

Answer 6

Elevator

Horizontal Stabilizer

Question 7

Elevator

Answer 7

-Electrically controlled, hydraulically actuated