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70 Cards in this Set
- Front
- Back
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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 (PCUs) |
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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) |
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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
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What does pressing the AP/TRIM DISC button do
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? Disconnects both HS-ACE channels but only while held.
Releasing it will activate the channels again. |
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What Flap Lever position has a gated stop
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Flaps 4
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What two flap lever positions provide identical flap and
slat positions? |
Flaps 4
Flaps 5 |
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How many degrees of flap and slat does full flap provide
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35 degrees of flaps
25 degrees of slats |
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Do the spoilers deploy at different angles when using the
speed brake lever? |
No, they deploy symmetrically and at the same angle
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How would we trim the stabilizer if the normal trim does
not function? |
Use the Backup Pitch Trim Switch on the center console
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What will happen if using the backup Pitch Trim Switch
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The autopilot will disengage
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Can we disable Channel 1 or 2 of the HS-ACE
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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) |
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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.
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What three flight systems have Flight Control Mode
buttons? |
Rudder
Spoilers Elevator |
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What three surfaces are shown on the Flight Control
System Status Annunciation? |
RUDDER
ELEV LH ELEV RH |
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There is an upper and lower rudder surface. What about
the elevators? |
There is an inboard and outboard elevator surface.
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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 AOM. |
Look at the Flight Controls Synoptic Page
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You're looking at the Flap EICAS position indicator and it is showing amber. What does this mean?
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The flaps are in transit. It will turn green when stable
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What will the EICAS display if a surface jamming
occurs? |
EICAS message plus an amber box and readout on the flap
display |
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What is the green takeoff band of the pitch trim
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1 Degree to -6 degree
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How many ACEs are installed
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Three P-ACE
Two SF-ACE One HS-ACE |
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What are the two basic flight control modes of operation
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Normal
Direct |
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Basically, what happens in the Direct Mode
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The FCM is removed from the control loop and the control
limits are set by hardware in the P-ACE. |
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What results in the Direct Mode activation
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No airspeed input or higher level functions to the P-ACE.
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Can the Direct Mode be selected by the pilot
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Yes, by pressing the FLT Control Mode button in (out is
normal) |
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Which elevator surface does Hydraulic System 1 control?
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Left Outboard Elevator
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Which elevator surface does Hydraulic System 2 control?
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Left & Right Inboard Elevator
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Which elevator surface does Hydraulic System 3 control?
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Right Outboard Elevator
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If a jam occurs in one elevator what happens to the
system? |
That one surface remains fixed and the pilot controls
remaining elevator surfaces |
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What is no longer available when in the Direct Mode
(elevator)? |
Elevator Thrust Compensator
AOA Limiting |
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What is the Elevator Thrust Compensator Function
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It moves the elevator +/-50 to compensate Engine Thrust
Changes. |
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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)
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After an elevator disconnect, the pilot of the non-jammed
side retains control over which elevator? |
The on-side elevator
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Does the trim switch activate the trim through the FCM
(Flight Controls Module)? |
No, only the autopilot trim uses the FCM.
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The priority of HS-ACE (Horizontal Stabilizer Actuator Control Electronics) trim commands is?
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Backup
Captain 1st Officer FCM (Autopilot Trim) |
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When does the trim function work at only half speed
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Electrical Emergency following RAT deployment
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Which hydraulic system powers the inboard aileron
PCUs? |
Inboard Aileron PCU ..........Hydraulic System 2
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Which hydraulic system powers the outboard
aileron PCUs? |
Outboard Aileron PCU........Hydraulic System 3
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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. |
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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 |
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What prevents aileron runaway trim
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There is a 3 second timer that limits trim activation to no more than 3 seconds.
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Which hydraulic systems power which rudder surfaces
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Hydraulic System 1 ....Upper Rudder
Hydraulic System 3 .....Lower Rudder |
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How can the pilot disconnect a jammed rudder
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He/She cannot
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How does an electrical emergency with RAT deployed
affect the flaps and slats? |
They will operate at only 1/2 speed
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Which hydraulic systems power the ground spoilers
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L2 & R2 (Outboard Ground Spoilers)........Hydraulic System 1
L1 & R1 (Inboard Ground Spoilers)...........Hydraulic System 2 |
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Are speedbrakes available in the Direct Mode
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No
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When will the speedbrakes automatically retract
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When selecting Flaps 3 on an Approach, or
After TLA of 600 on Go Around |
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This helps reduce pilot workload by applying elevator commands to reduce the pitch moments produced by increasing or decreasing thrust
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Elevator Thrust Compensation
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Elevator commands are limited to what degrees
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+/- 5 degrees
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How many channels is the H-ACE
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2-Active & standby
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How many multifunction spoilers are there
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3 outboard per wing act as speed brakes and roll control
2 inboard each wing act as ground spoilers |
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How many hydraulic actuators are ther for the multifunction spoilers
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1 per panel
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What is the maximum deflection of the speed brakes
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30 degrees
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When will the speed brakes auto retract
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-Slat/flap selector set to a position 2 degrees or more
-A/S less than 180 knots -Thrust level angle >60 degrees |
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The speed brakes are not available in what mode
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Direct mode
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What situation will grouns spoilers auto deploy
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-WOW
-Wheel speed <45 knts or A/S >60 knts -TLA <60 degrees |
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What situation will ground spoilers auto retract
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-Wheel speed <45 knts
-TLA moved beyond 60 degrees |
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What mode are ground spoilers unavailable
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Direct mode
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What extends first slats or flaps
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Slats
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What retracts last slats or flaps
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Slats
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How many slats are there per side
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4
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Full position of slats and flaps results in
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25 degrees slats
35 degrees flaps |
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What are the two slat positions
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1-3=15 degrees
4-Full=25 degrees |
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What flap setting is the designated go around position
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4
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If the RAT is deployed the slats/flaps are restricted beyond what flap position
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3
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VMO will extend the multifunction spoilers to what degree
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8
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When the aileron disconnect handle is pulled what happens to the multifunction spoilers
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Only 2 of the 3 are available
The inboards are inoperative |
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Do not retract flaps or slats to less than ____ if icing is suspected
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3
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What happens when you use only half of the back up trim switches
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They have a 5 secon time limitation. Holding for longer will deactivate the switch
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In case of a jammed rudder PCU actuator what will happen to the rudder
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The rudder will be hydraulically locked in the current position. Aircraft control will be established through the ailerons and roll spoilers
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In the event of a jam in the captains rudder pedal assemblies what happens to the rudder
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It remains active and will be actuated by higher level functions (yaw damping and turn coordinator)
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