Flight Controls Flashcards
What do the three positions of the stab trim cutout switches do?
Auto - shutoff valve open
Valves close automatically for unscheduled trim
ON - shutoff valve open
Overrides automatic cutout
CUTOUT
Shutoff valve manually closed
Can the alternate trim switches while the autopilot is on without disconnecting it?
Yes
Which hyd systems supply pressure to the upper and lower rudders?
Odd numbers upper
Even lower, even lower
What allows for control movement in the event of a jam?
For the elevator?
Shearouts
Same
How many rudder ratio changers are there?
What do they do?
There is one for upper and lower rudder
Restrict movement of rudder as airspeed increases
> STAB GREENBAND
Nose gear pressure switch disagrees with the stab green band calculated by the FMC. One if the following may be incorrect:
Airplane loading
Gross weight entry
CG entry
Takeoff flap entry
How many ailerons and spoilers are there?
What systems power them on each side?
4 ailerons
10 spoilers
Ailerons left are 1/2 and 1/3. Outboard inboard
Right 3/4 2/4. Out and In
In flight, which spoilers assist roll control?
Which ones are used for spoiling lift in flight?
All but one most inboard
All but two most outboard
With speedbrakes armed what 3 conditions must be met for extension?
What if not armed?
When do they auto retract on rejected landing?
Thrust 1/3 at idle
Main wheels on the ground
2/4 thrust reverser to idle
Same for RTO
When TL 1 or 3 advanced
When looking at the flight control synoptic what is unusual about watching it in flight while you operate the speedbrake?
It only shows the position if the left inboard spoiler
AILERON LOCKOUT
Unlocked at high air speeds
Or locked at low speed
Crosswind limited!!!
> speedbrakes extended
Speedbrakes are being used in an inappropriate situation
Thrust above idle
Or
selecting landing flaps with spoilers out
Or
Between 800-15 ft radalt if lever is aft of arm detent
What are the primary and secondary sources of power for the leading edge flaps?
Trailing edge?
FLAPS CONTROL?
How to control?
Leading edge
Primary- bleed air
Secondary - electric
Trailing
Primary hyd 4 outboards/ hyd 1 inboards
Secondary - electric for both no load relief
Primary abs secondary inop. 3FCUS INOP
Altérnate controller by gear switch
Flap lever inop
Leading and trailing extend same time- no asymmetry protection nor loadrelief
Max flaps 25!!!! Get perf!
What do the flap control units do?
Provide sequencing
Load protection
Asymmetry
Flap indication
Which flaps deploy with flaps 1?
What are the to flap positions?
Landing?
Inboard and midspan leading edgtrailing edge
Outboards extend and trailing
Flaps 10/20
Flaps 25/30 (flaps relief doesn’t work in secondary mode)
