Flight Controls Flashcards
What do the three positions of the stab trim cutout switches do?
Auto - shutoff valve open Valves close automatically for unscheduled trimON - shutoff valve openOverrides automatic cutoutCUTOUTShutoff 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 upperEven 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 rudderRestrict 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 loadingGross weight entryCG entryTakeoff flap entry
How many ailerons and spoilers are there?What systems power them on each side?
4 ailerons10 spoilers Ailerons left are 1/2 and 1/3. Outboard inboardRight 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 inboardAll 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 idleMain wheels on the ground2/4 thrust reverser to idleSame for RTOWhen 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 speedCrosswind limited!!!
> speedbrakes extended
Speedbrakes are being used in an inappropriate situationThrust above idle Or selecting landing flaps with spoilers outOrBetween 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 edgePrimary- bleed airSecondary - electricTrailingPrimary hyd 4 outboards/ hyd 1 inboardsSecondary - electric for both no load reliefPrimary abs secondary inop. 3FCUS INOPAltérnate controller by gear switchFlap 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 sequencingLoad protectionAsymmetry Flap indication
Which flaps deploy with flaps 1?What are the to flap positions?Landing?
Inboard and midspan leading edgtrailing edgeOutboards extend and trailingFlaps 10/20Flaps 25/30 (flaps relief doesn’t work in secondary mode)
