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70 Cards in this Set

  • Front
  • Back
What is the main difference between the ailerons and
other flight controls?
The ailerons are driven by conventional control cables that are connected to hydraulic actuators (hydro-mechanical)while the rest of the flight controls are fly by wire. Fly by
Wire hydraulic actuators are called Power Control Units
What are the two main parts of the Fly-by-Wire primary
flight control electronics?
Primary Actuator Control Electronics (P-ACE)
Flight Control Module (PCM)
The Pitch Trim Switches trim the airplane when the
autopilot is not engaged. Which one has priority?
Captain’s has priority over the First Officer’s
What does pressing the AP/TRIM DISC button do
? Disconnects both HS-ACE channels but only while held.
Releasing it will activate the channels again.
What Flap Lever position has a gated stop
Flaps 4
What two flap lever positions provide identical flap and
slat positions?
Flaps 4
Flaps 5
How many degrees of flap and slat does full flap provide
35 degrees of flaps
25 degrees of slats
Do the spoilers deploy at different angles when using the
speed brake lever?
No, they deploy symmetrically and at the same angle
How would we trim the stabilizer if the normal trim does
not function?
Use the Backup Pitch Trim Switch on the center console
What will happen if using the backup Pitch Trim Switch
The autopilot will disengage
Can we disable Channel 1 or 2 of the HS-ACE
By using the Pitch Trim Sys 1 (2) guarded buttons on the
center console Trim Panel. The respective channel is disabled when pushed in (out is normal)
There are three Flight Control Mode guarded buttons.
What do they do?
When pushed in they put the associated flight system into the Direct Mode from the Normal Mode.
What three flight systems have Flight Control Mode
What three surfaces are shown on the Flight Control
System Status Annunciation?
There is an upper and lower rudder surface. What about
the elevators?
There is an inboard and outboard elevator surface.
On most airplanes it is somewhat important to know what flight controls are powered by which hydraulic systems
How can we find this information without referencing the
Look at the Flight Controls Synoptic Page
You're looking at the Flap EICAS position indicator and it is showing amber. What does this mean?
The flaps are in transit. It will turn green when stable
What will the EICAS display if a surface jamming
EICAS message plus an amber box and readout on the flap
What is the green takeoff band of the pitch trim
1 Degree to -6 degree
How many ACEs are installed
Three P-ACE
Two SF-ACE
One HS-ACE
What are the two basic flight control modes of operation
Basically, what happens in the Direct Mode
The FCM is removed from the control loop and the control
limits are set by hardware in the P-ACE.
What results in the Direct Mode activation
No airspeed input or higher level functions to the P-ACE.
Can the Direct Mode be selected by the pilot
Yes, by pressing the FLT Control Mode button in (out is
Which elevator surface does Hydraulic System 1 control?
Left Outboard Elevator
Which elevator surface does Hydraulic System 2 control?
Left & Right Inboard Elevator
Which elevator surface does Hydraulic System 3 control?
Right Outboard Elevator
If a jam occurs in one elevator what happens to the
That one surface remains fixed and the pilot controls
remaining elevator surfaces
What is no longer available when in the Direct Mode
Elevator Thrust Compensator
AOA Limiting
What is the Elevator Thrust Compensator Function
It moves the elevator +/-50 to compensate Engine Thrust
Does the Feel system still work in the event of a jammed
control wheel resulting in separation?
Yes, each torque tube has it's own spring but the feel will be lighter (1/2 of normal loads)
After an elevator disconnect, the pilot of the non-jammed
side retains control over which elevator?
The on-side elevator
Does the trim switch activate the trim through the FCM
(Flight Controls Module)?
No, only the autopilot trim uses the FCM.
The priority of HS-ACE (Horizontal Stabilizer Actuator Control Electronics) trim commands is?
1st Officer
FCM (Autopilot Trim)
When does the trim function work at only half speed
Electrical Emergency following RAT deployment
Which hydraulic system powers the inboard aileron
Inboard Aileron PCU ..........Hydraulic System 2
Which hydraulic system powers the outboard
aileron PCUs?
Outboard Aileron PCU........Hydraulic System 3
In the event of an aileron jam followed by a disconnect
which side has normal feel and which side has no feel
Captain’s side has normal feel.
First Officer’s side has no feel.
There are inner, middle and outboard spoilers on each
wing. In the event of a disconnect due to jamming which side controls which spoilers?
Captain side controls Outboard Spoilers
First Officer’s side controls Middle Spoilers
The Inboard Spoilers are Disabled
What prevents aileron runaway trim
There is a 3 second timer that limits trim activation to no more than 3 seconds.
Which hydraulic systems power which rudder surfaces
Hydraulic System 1 ....Upper Rudder
Hydraulic System 3 .....Lower Rudder
How can the pilot disconnect a jammed rudder
He/She cannot
How does an electrical emergency with RAT deployed
affect the flaps and slats?
They will operate at only 1/2 speed
Which hydraulic systems power the ground spoilers
L2 & R2 (Outboard Ground Spoilers)........Hydraulic System 1

L1 & R1 (Inboard Ground Spoilers)...........Hydraulic System 2
Are speedbrakes available in the Direct Mode
When will the speedbrakes automatically retract
When selecting Flaps 3 on an Approach, or
After TLA of 600 on Go Around
This helps reduce pilot workload by applying elevator commands to reduce the pitch moments produced by increasing or decreasing thrust
Elevator Thrust Compensation
Elevator commands are limited to what degrees
+/- 5 degrees
How many channels is the H-ACE
2-Active & standby
How many multifunction spoilers are there
3 outboard per wing act as speed brakes and roll control

2 inboard each wing act as ground spoilers
How many hydraulic actuators are ther for the multifunction spoilers
1 per panel
What is the maximum deflection of the speed brakes
30 degrees
When will the speed brakes auto retract
-Slat/flap selector set to a position 2 degrees or more
-A/S less than 180 knots
-Thrust level angle >60 degrees
The speed brakes are not available in what mode
Direct mode
What situation will grouns spoilers auto deploy
-Wheel speed <45 knts or A/S >60 knts
-TLA <60 degrees
What situation will ground spoilers auto retract
-Wheel speed <45 knts
-TLA moved beyond 60 degrees
What mode are ground spoilers unavailable
Direct mode
What extends first slats or flaps
What retracts last slats or flaps
How many slats are there per side
Full position of slats and flaps results in
25 degrees slats
35 degrees flaps
What are the two slat positions
1-3=15 degrees
4-Full=25 degrees
What flap setting is the designated go around position
If the RAT is deployed the slats/flaps are restricted beyond what flap position
VMO will extend the multifunction spoilers to what degree
When the aileron disconnect handle is pulled what happens to the multifunction spoilers
Only 2 of the 3 are available
The inboards are inoperative
Do not retract flaps or slats to less than ____ if icing is suspected
What happens when you use only half of the back up trim switches
They have a 5 secon time limitation. Holding for longer will deactivate the switch
In case of a jammed rudder PCU actuator what will happen to the rudder
The rudder will be hydraulically locked in the current position. Aircraft control will be established through the ailerons and roll spoilers
In the event of a jam in the captains rudder pedal assemblies what happens to the rudder
It remains active and will be actuated by higher level functions (yaw damping and turn coordinator)