FLIGHT CONTROL AND STALL PROTECTION CBT Flashcards
What does the Flight Control synoptic page show?
Elevator
Rudder
Ailerons
Spoilers
Which flight controls are flight-by-wire (FBW)?
All except the ailerons.
What is E-PBIT?
Electrical Power Up Built in Test
What is the function of E-PBIT? How is the test performed and how long is it good for?
Test all the electrical components of the fly-by-wire system. Automatically when the airplane is powered up. Takes 3 minutes. Good for 50 hours, running while powered on.
What are the ways the E-PBIT is interrupted?
Any hydraulic pump is turned ON
Flight control Mode Buttons are cycled
AC power is interrupted
During normal operations when is the E-PBIT normally performed?
The first flight of the day.
What is H-PBIT? What is it checking?
Hydraulic Power Up Built in Test, checks the hydraulic components of the FBW system
During normal operations when is the H-PBIT normally performed?
During Captains originating flow as needed.
When is the H-PBIT preformed?
Automatically when all 3 hydraulic systems or pressurized.
How can the H-PBIT be interrupted?
Any flight control surface is moved.
What does the Hydraulic System source indicate?
Which hydraulic system is moving the respective control surface.
How many actuators does the rudder and left/right elevator have? and what powers them?
2 each, powered by 2 different hydraulic systems.
What are the flight control modes?
NORMAL- FCMs provide high level functions (ex AOA limiting)
DIRECT- FCM is bypassed and high level functions are not available.
What does the ACTUATORS indications mean?
Which actuator is moving the respective control surface. Indicated by ON and STBY.
What flight control positions are shown on EICAS?
Slates/Flpas
Speedbrakes
Trim -Roll, Yaw, an Pitch
What are slats/flaps protection logic?
Skew protection- asymmetric flap/slat movement
Strike Protection- stops extension if force is too great
What will happen if any trim settings are not within the green and takeoff power is added?
Aural “NO TAKEOFF, TRIM”
When would we ever touch the flight control mode buttons?
As directed by the QRH
What do the Stall Waring buttons allow?
Stick Shaker cutout
With the Elevators in NORMAL mode, what higher level functions will be active?
AOA, limiting with elevator offset
Thrust compensation
Elevator control law scheduling with airspeed
Configuration change compensation
With the Rudder in NORMAL mode, what higher level functions will be active?
Rudder flight authority
Yaw damper and turn coordination via AFCS
With the Spoilers in NORMAL mode, what higher level functions will be active?
Roll spoiler scheduling
Ground spoiler automatic deployment and stowed if thrust added for a go-around.
When will the stick shaker activate?
When pitched to the PLI, or pitch limit indicators.
When airspeed reaches LSA, or low speed awareness.
What is the ACE? What does it do?
Actuator Control Electronics, connects the control column electronically to the control surface, providing direct analogue control.
What is the FCM? What does it do?
Flight Control Module, provide software based assistance to the ACEs. Provides higher level functioning in NORMAL mode.
What is the PCU? What does it do?
Power Control Unit, hydraulically actuate the control surfaces.
What is the purpose of the MF Spoilers?
The Multifunction spoiler with FCM deflect to assist in roll control.
What doe the trim switch control?
The horizontal stabilizer.
What is the limit of manual trim?
After 3 seconds, an aural “TRIM” is announced.
If half of the switch is actuated for more than 7 seconds it is disabled.
What happens if both pilots attempt to trim at the same time?
The Captain trim switch has priority.
How do we disconnect the TRIM with the AP/TRIM DISC button?
Press and Hold, to disable both pitch trim channels
Can we control the inner two spoilers with the speed brake lever?
No
When will the speed brakes automatically retract?
Airspeed slower than 180kts
Thrust near TOGA (70°)
Flaps greater than 2
When will ground spoilers deploy?
Automatically on landing, if spoilers are in Normal mode.
What is the stabilizer trim priority?
Back Up switches
Captain
First Officer
FCM
If the auto pilot is on is yaw trim done automatically?
No
What do the pitch trim cutout buttons do? When would we use them?
Disables the respective channel, in the event of a runaway.
What are the slat/flap settings?
1, 2, 3, 4, 5
What are possible takeoff slat/flap settings?
1, 2, or 4
What are possible slat/flap settings?
5 orFULL
What are the slat/flap speed limitations?
1 - 230kts 2 - 215kts 3 - 200kts 4 or 5 - 180kts FULL - 165 kts
What happens when aileron disconnect is pulled?
The ailerons are disconnected from one another.
What happens when elevator disconnect is pulled?
The elevators are disconnected from one another.
