Forward Instrument Panel Flashcards
With a total loss of electrical power, does the ISIS losses its power?
No, it will be powered by internal battery for 5 minutes
What is the function of the 2 Landing Gear Control and Interface Units (LGCIU)?
- Provide sequencing, operation, monitoring, and indications for the landing gear
- Provide aircraft “In Flight” or “On the Ground” signals to other aircraft systems
What hydraulic system powers the landing gear and doors?
Green
What 3 things occur when you turn the Manual Gear Extension Handle?
- Removes Green hydraulic pressure
- Opens gear doors
- Unlocks the up locks
How many cranks does it take to lower the gear manually?
3 turns clock-wise.
In what occasions is green hydraulic power not available to the landing gear?
- after Emergency Landing Gear Gravity Extension
* speed is above 260 kts (safety valve automatically shuts it off)
When does the red arrow in the LND panel illuminate?
When the aircraft is in the landing configuration and the landing gear is not locked down.
What do the red UNLK lights indicate?
The landing gear is not locked in the selected position.
What controls the LDG GEAR lights?
LGCIU 1
If LGCIU 1 fails will the lights still work?
Yes, as long as it is still powered
What controls and manages all braking functions?
The Brake and Steering Control Unit (BSCU)
What happens when you switch the A/SKID & N/W STRG to OFF?
- Lose Nosewheel steering
- Braking is powered by the Yellow system
- Anti-skid is deactivated
Which hydraulic systems provide pressure to the brakes?
- Normal brakes – Green
* Alternate brakes – Yellow backed up by a hydraulic accumulator
When do the Autobrakes activate on landing if armed?
When the ground spoilers deploy
What is the difference between LOW and MED AUTO BRK?
• LOW – progressive pressure applied to brakes 4 seconds after ground spoilers deploy to decelerate
at 1.7 MPS.
• MED - progressive pressure applied to brakes 2 seconds after ground spoilers deploy to decelerate
at 3 MPS
What does the AUTO BRK green DECEL light indicate?
Actual rate of deceleration is within 80% of the selected rate.
If you don’t see DESEL after landing , will you call DECEL?
Yes, if deceleration is felt by the crew and confirmed by speed trend on the PFD.
What is the Takeoff setting for Auto Brakes?
MAX
What will cause the MAX AUTO BRK to activate on a RTO?
- Airspeed above 72 knots, and
- Thrust Levers at IDLE, and
- Ground spoiler extension
If you lose Green hydraulic pressure will you have Auto Brakes?
No, not with the Alternate Brake system
Is Anti-skid available with Alternate Brakes?
Yes, if certain conditions are met
With spoilers not armed will the spoilers deploy for an RTO?
Yes – when at least one engine is in reverse AND the other engine is in idle
How many brake applications are available with accumulator pressure?
Approximately 7 full applications
What is the maximum brake temperature for takeoff?
300° C
When should the brake fans be selected to ON?
ON when brake temperature exceeds 100°. OFF for takeoff when temperature below 150.
What does the BRAKES & ACCU PRESS triple indicator indicate?
- Yellow hydraulic pressure delivered to the left and right brakes
- Yellow system brake accumulator pressure
How do you perform the brake check during initial taxi?
Press the brake pedals to ensure the aircraft slows, and check the brake pressure on the triple indicator is
zero, indicating the Green hydraulic system has taken over.
