Flight Controls Flashcards

1
Q

What do the three positions of the stab trim cutout switches do?

A

Auto - shutoff valve open
Valves close automatically for unscheduled trim

ON - shutoff valve open
Overrides automatic cutout

CUTOUT
Shutoff valve manually closed

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2
Q

Can the alternate trim switches while the autopilot is on without disconnecting it?

A

Yes

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3
Q

Which hyd systems supply pressure to the upper and lower rudders?

A

Odd numbers upper

Even lower, even lower

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4
Q

What allows for control movement in the event of a jam?

For the elevator?

A

Shearouts

Same

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5
Q

How many rudder ratio changers are there?

What do they do?

A

There is one for upper and lower rudder

Restrict movement of rudder as airspeed increases

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6
Q

> STAB GREENBAND

A

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

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7
Q

How many ailerons and spoilers are there?

What systems power them on each side?

A

4 ailerons
10 spoilers

Ailerons left are 1/2 and 1/3. Outboard inboard
Right 3/4 2/4. Out and In

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8
Q

In flight, which spoilers assist roll control?

Which ones are used for spoiling lift in flight?

A

All but one most inboard

All but two most outboard

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9
Q

With speedbrakes armed what 3 conditions must be met for extension?

What if not armed?

When do they auto retract on rejected landing?

A

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

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10
Q

When looking at the flight control synoptic what is unusual about watching it in flight while you operate the speedbrake?

A

It only shows the position if the left inboard spoiler

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11
Q

AILERON LOCKOUT

A

Unlocked at high air speeds

Or locked at low speed
Crosswind limited!!!

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12
Q

> speedbrakes extended

A

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

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13
Q

What are the primary and secondary sources of power for the leading edge flaps?

Trailing edge?

FLAPS CONTROL?

How to control?

A

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!

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14
Q

What do the flap control units do?

A

Provide sequencing
Load protection
Asymmetry
Flap indication

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15
Q

Which flaps deploy with flaps 1?

What are the to flap positions?

Landing?

A

Inboard and midspan leading edgtrailing edge

Outboards extend and trailing

Flaps 10/20

Flaps 25/30 (flaps relief doesn’t work in secondary mode)

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16
Q

FLAPS DRIVE?

A

A flap group will not drive
Or
Flap assumtry

DO NOT USE ALTERNATE MODE