Forward Instrument Panel Flashcards

1
Q

What is the function of the two landing gear control and interface units (LGCIU)?

A

Provide sequencing, operation, monitoring, and indications for the landing gear
Provide aircraft “In Flight” or “On the Ground” signals to other aircraft systems

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2
Q

When does the red arrow in the LND panel illuminate?

A

Below 750 feet RA, when the aircraft is in the landing configuration and the landing gear is not locked down

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3
Q

What happens if your airspeed is 280 knots and you place the landing gear lever to DOWN?

A

Nothing - A safety valve shuts off hydraulic power to the landing gear system when airspeed is above 260 knots

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4
Q

What do the red UNLK lights indicate?

A

The landing gear is not locked in the selected position

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5
Q

What controls and manages all braking functions?

A

Normal brakes: Braking steering control unit (BSCU)
Alternate Brakes: Alternate braking control unit (ABCU)

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6
Q

What happens when you switch the A/SKID & N/W STRG to OFF?

A

Nosewheel steering deactivated
Brake pressure is supplied by the Yellow hydraulic system
Anti-skid is deactivated
BSCU and ABCU are depowered
A 1,000 psi pressure limiting valve helps prevent wheel lock up

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7
Q

Which hydraulic systems provide pressure to the brakes?

A

Normal brakes - Green
Alternate brakes - Yellow backed up by a hydraulic accumulator

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8
Q

What are the four modes of braking?

A

Normal braking
Alternate braking with antiskid
Alternate braking without antiskid (max brake pressure 1000psi)
Parking brake

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9
Q

When do the autobrakes activate on landing if armed?

A

When the ground spoilers deploy

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10
Q

What is the difference between LOW and MED AUTO BRK?

A

LOW - Progressive pressure applied to brakes 4 seconds after ground spoilers deploy to decelerate at 5.6 FPS
MED - Progressive pressure applied to brakes 2 seconds after ground spoilers deploy to decelerate at 9.8 FPS

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11
Q

What does the AUTO BRK green DECEL light indicate?

A

Actual rate of deceleration is within 80% of the selected rate

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12
Q

What is the takeoff setting for auto brakes?

A

MAX

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13
Q

What will cause the MAX AUTO BRK to activate on a RTO?

A

Airspeed above 72 knots, and
Thrust levers at IDLE, and
Ground spoiler extension

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14
Q

If you lose Green hydraulic pressure, will you have auto brakes?

A

No, not with the alternate brake system

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15
Q

Is anti-skid available with alternate brakes?

A

Yes, if certain conditions are met

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16
Q

With spoilers not armed will the spoilers deploy for an RTO?

A

Yes - when at least one engine is in reverse

17
Q

How many brake applications are available with accumulator pressure?

A

Approximately 7 full applications of brake pedals or parking brake or any combination thereof

18
Q

What does the BRAKES & ACCU PRESS triple indicate?

A

Yellow hydraulic pressure delivered to the left and right brakes
Yellow system brake accumulator pressure