FLIGHT CONTROLS Flashcards
What power the yaw dampers?
L and C hydraulics
where does the yaw dampers takes is inputs from? (2)
both ADCs and
all 3 IRUs
When is the speedbrakes is armed for landing? (3)
Hyd press to both truck tilt actuators and
LG on the ground (no tilt sense) and
both thrust levers at idle
SPEEDBRAKES EXT caution light on when? (2)
Flaps in landing position (25/30) or
Captain’s RA is at/or 800ft
Openskies limitation is 1000ft AGL
caution inhibited below 15ft RA
if L HYD PRESS lost, why don’t we arm the speedbrakes in auto?
HYD press to the gear truck tilt actuators is lost. there is no way to know if and when the truck will sense a no tilt condition which would cause an auto-deployment and that would compromise safety when in flight
When does the speedbrakes automatically deploy during RTO? (4)
Hyd press to both truck tilt actuators and
LG on the ground (no tilt sense) and
both thrust lever at idle and
either reverse thrust lever moved reverse idle
openskies: RTO, speedbrake in manual before reverse
What does rudder ratio does?
rudder ratio dampens pilots inputs to the rudder
30° up to 127Kts to 3.5° at 410Kts
components of the rudder ratio?
use both ADCs
2 rudder ratio changer modules
a single actuator (L hyd system)
RUDDER RATIO light means?
above 160Kts: avoid large or abrupt rudder inputs
if normal L hyd press: -XWIND 15Kts
-do not autoland
AP up to 180ft ARTE
What system power the stabilizer trim?
Center and Right Hyd system
stabilizer trim on AP?
AP uses only 1 trim module
trimming at half the manual trim rate
STAB TRIM lights means?
one or more trim brakes has failed to release
SPOILERS light means?
one or more spoiler pairs are inoperative
The amber LEADING EDGE light illuminated indicates?
Slat position disagree, or
slat assymmetry
When is the flap load relief system armed?
When flaps 30 has been selected with the flap lever
The flight control shutoff switches control hydraulic power to? (3)
stabilizer, elevators and rudder
Which hydraulic system powers the rudder ratio changer?
Left
the ratio changer receives air data computer airspeed inputs and provides control signals to an actuator powered by the left hydraulic system
Automatic stabilizer trim uses?
One trim control module at half electric or alternate trim rate
When multiple AP are engaged, electric trimming is?
Inhibited
on single AP, electric trimming causes AP to disengage
Speedbrakes ARMED. What is NOT required for auto extension on landing?
Reverse thrust lever raised to its interlock stop
auto extension requires hydraulic pressure to both lg truck tilt actuators, both truck tilt sensors detect no-tilt and both thrust levers at idle.
speedbrake will also extend automatically whenever these 3 conditions occur and either reverse thrust lever is raised to its interlock stop and the speedbrake lever does not need to be ARMED
When do slats normally move from the TO to the landing position?
when the flap lever is moved to position 25
When do slats move from the TO to the landing position in ALTN?
When flaps 20 is selected using the alternate selector switch
When is FLAP LD RELIEF advisory message is displayed?
Flap load relief system fails to operate when required
How many hydraulic actuators are used for each aileron?
2
rotating either control wheel sends a signal to the aileron hydraulic actuators.
2 actuators are used for each aileron
Pressing either alternate flaps switch?
Shuts off hydraulic power to the flap and slat drive systems
a RUDDER RATIO advisory message apperas on EICAS?
the L hydraulic system actuator is automatically depressurized
What powers the elevator feel systems?
Center and Right hydraulics
mechanical springs provide feel following a loss of center and right hudraulic
How many spoiler panels are there on each upper wing surface?
6
During flaps/slats alternate operation, which protection is provided?
Slat asymmetry protection only
the amber TRAILING EDGE light illuminated indicates?
Flap position disagree, or
flap asymmetry, or
flap load relief failure
Flap maneuvering speeds allow for?
25 degrees bank plus additional 15 degree bank safety factor before initial buffet is encountered
