9 - Flight Controls Flashcards
How are the outboard elevators controlled?
by the position of the related inboard elevator
L-1/R-4
How are the inboard elevators controlled?
control column inputs mechanically transferred to hydraulic actuators
(L 1/2, R 3/4)
Yaw Damper INOP lights normally remain illuminated until ______
the first IRS is aligned
With main gear on the ground: speedbrake lever moves to UP and all spoiler panels extend when either:
Armed -
Down-
thrust levers 1 and 3 retarded
thrust levers 1 and 3 retarded, and engine 2 or engine 4 reverse thrust lever raised to idle detent
Speedbrake lever moves to DN and all spoiler panels retract if:
engine 1 or engine 3 thrust lever advanced
Primary mode - positions leading edge flaps ______ and trailing edge flaps ______
Secondary Mode - positions leading and/or trailing edge flaps _______
pneumatically
hydraulically
electrically
ALTN Mode - positions leading and/or trailing edge flaps ______
maximum extension is flaps ___
electrically
25
Alternate (ALTN) Flaps ARM Switch
ALTN - (5)
- arms flap alternate control mode
- arms Alternate Flaps selector
- shuts off primary and secondary mode operation
- asymmetry protection not available
- Flap lever inoperative
Control column inputs ______transfer to ______ actuators on the inboard elevator control surfaces.
mechanically
hydraulic
(Inboard elevator position controls input for the related adjacent outboard elevator actuator)
Left and right ______ elevator positions display on the EICAS status display
outboard
An elevator feel and centering mechanism provides artificial feel at control columns and is powered by _______
Loss of one of the hydraulic systems does not affect
feel forces. If both hydraulic systems fail, _______ provide feel forces
hydraulic systems 2 and 3
```
mechanical springs
feel force is no longer a function of airspeed
~~~
The stabilizer trim system provides pitch trim by ___________
____ control stabilizer trim control modules powered thru ___ electrical channels
Each control module _______ powers a trim actuator
varying the angle of incidence of the horizontal stabilizer
2/2 (normal/alternate)
hydraulically (2-3)
The Alternate Stabilizer Trim switches provide trim commands in the same manner as the Stabilizer Trim switches through _____________
The Alternate Stabilizer Trim switches also provide ________________
a separate control channel
an increased range of stabilizer travel
The stabilizer trim indicators incorporate a multiple green band which indicates the acceptable range of trim settings for takeoff. The takeoff trim setting is calculated based on
______________
The ___________ is compared to the calculated green band as a crosscheck to ensure the correct green band is displayed
FMC calculated gross weight, center of gravity and takeoff thrust derate selection
nose gear oleo pressure switch
Hydraulic system(s) _______ power two stabilizer trim actuators
If one actuator fails to operate, trim commanded by the flight crew __________
2 and 3
reduces to half the normal scheduled rate
If a single autopilot is engaged, using the control wheel Stabilizer Trim switches ______
If multiple autopilots are engaged, using the control wheel Stabilizer Trim switches ______
Using the Alternate Stabilizer Trim switches with autopilot(s) engaged ______
causes the autopilot to disengage and the stabilizer to move in the desired direction
inhibited
override autopilot trim commands with any number of autopilots engaged and do not cause disengagement
Control column inputs in the direction opposing stabilizer trim will __________
The control column trim cutoff function ________ alternate trim inputs
cutoff electric trim commands to the control modules
does not affect
Speed stability trim uses stabilizer trim _________
Activating the Stabilizer Trim switches or engaging an autopilot _______ speed stability trim
to improve handling characteristics of the
airplane in the lower speed range.
inhibits
An aileron lockout system locks the outboard ailerons in the neutral position at what speed?
238 knots
All spoilers, except _______ on each wing, function as flight spoilers which operate with the ailerons to provide roll control.
Spoiler mixers combine _________ allowing roll inputs to deflect spoiler panels up or down from their deployed positions when _________
inboard spoiler
speedbrake lever and control wheel inputs
speedbrakes or ground spoilers are in use
If the Aileron Trim switches are activated with an autopilot engaged ___________
When the autopilot is disengaged ________
the aileron neutral point is repositioned
the wheel and ailerons move to the repositioned aileron neutral point
Ailerons are powered by:
L - outboard
L - inboard
R - inboard
R - outboard
1/2
1/3
2/4
3/4
What is the purpose of the two rudder ratio changer systems?
gradually reduce each rudder surface’s response to pedal inputs as airspeed increases
If a ratio changer system fails ______________
At low airspeeds ____________
the response of the related rudder surface to pedal inputs remains the same as when the failure occurred, regardless of changes in
airspeed
full rudder deflection may not be available. (The
airplane crosswind capability is reduced)
SNGL - 20
DUAL - 10
Two independent yaw damper systems operate continuously in flight to ___________
The upper and lower yaw damper actuators are powered by _________
(Yaw damper inputs do not result in rudder pedal motion)
improve airplane lateral and directional stability and provide turn coordination
hydraulic systems 3 and 2
The upper rudder is powered by ________
The lower rudder is powered by ________
Hydraulic systems:
1/3
2/4
There are ___ spoiler panels on each upper wing surface just forward of the trailing edge flaps.
The ______ panels on each wing function as speedbrakes in flight.
On the ground ______ spoiler panels on each wing function as ground spoilers
six
four inboard
all six
The position of one spoiler on each wing is displayed on the EICAS status display.
On the left wing, the position of ______ is displayed.
On the right wing, the position of ______ is displayed.
[4] the fourth spoiler panel in from the wingtip is displayed (This panel functions as a flight spoiler, speedbrake, and ground spoiler)
[12] the outboard-most spoiler panel is displayed
(This panel functions as a flight spoiler and ground spoiler only)
With the Speedbrake lever in flight detent position, the two inboard spoiler panels on each wing extend to ______ position and the two middle spoiler panels on each wing extend to
_______ position
mid-travel
full travel
The EICAS advisory message SPEEDBRAKE AUTO indicates ______________
If the Speedbrake lever is in the ARM position, the message indicates ____________
a fault that may cause the loss of the automatic ground spoiler function
a fault which could result in inadvertent spoiler extension in flight
What hydraulic system(s) power the spoilers?
3223 44
There are ___ groups of leading edge flaps on each wing
The leading edge flaps are normally powered
_________
3 (outboard, midspan, inboard)
pneumatically from the bleed air duct
The trailing edge flaps consist of an inboard group normally powered by ________ and an outboard group normally powered by ________
Opposite trailing edge flaps are _______ to maintain symmetry
hydraulic system 1
hydraulic system 4.
mechanically connected
