Landing Gear Flashcards
How many wheel are there?
18
What powers the gear?
Hydraulic system 1 - body gear and nose gear retraction/extension, and also provides the power for the steering of these gears. Hydraulic system 4 provides - wing gear retraction/extension.
How does the alternate gear extension work?
Allows the gear to fall by gravity and springs pull the down locks in to position
What is a yellow X on the gear position indicator?
This indicator is inoperative
What powers the 2 brake systems
Normal - Hyd 4
Alternate - Hyd 1 or 2
How can the parking bake be released?
When either pilots pushes both brake pedals together
Are autbrakes available with alternate braking?
No
What is EICAS GEAR TILT caution message?
all main gear trucks are not in the full tilt position
T/F: ll Main Gear wheels are equipped with Normal and Alternate Brakes along with Antiskid.
True
The Nose Gear Retracts ____________.
Forward
The Main Gear include the ________ and _________.
Wing and Body
What is the difference between primary and alternate braking antiskid?
Primary is individual wheels
Alternate is pairs of wheels
What are all the protections provided by the anti-skid system?
Touchdown, hydroplane, and locked wheel protection.
Anti-Skid protection operates for both normal and alternate brake systems, but at a lower capacity in the ________ system.
Alternate
Locked wheel protection is provided using __________.
Wheel Speed Comparison
The EICAS Advisory message __________ displays if there is a fault in the anti-skid system.
ANTISKID
When will the autobrake activate during an aborted takeoff?
Above 85 knots ground speed
On landing when will the autobrakes be applied?
- On the ground
- Wheels spin up detected, and
- All thrust levers are closed.
How can the autobrakes be disarmed?
- Pedal braking applied
- Any Thrust lever advanced after landing
- Speedbrake lever moved to DOWN detent (after they have deployed on the ground)
- DISARM or OFF position selected
OR - autobrake fault
- normal antiskid system fault
- loss of normal brake hydraulic pressure.
The Autobrake system depends on the ________ brake system to be functioning.
Normal
The ABS selector has one mode for takeoff and ____ for landing.
5
The Autobrakes will not activate on a rejected takeoff if the ground speed is below _________.
85 kts
The _______ is displayed if the Autobrakes are disarmed or inoperative.
AUTOBRAKES Advisory Message
What are the type of brakes?
Disc Carbon Brake
What is the flow of the braking system?
The Pedals, metering valves and to the shuttle valves and on to the wheel brakes.
What is the amber temperature range for the brakes?
5 or Higher
What is the required cooling period for an EICAS BRAKE TEMP message?
70 minutes
The Nose Wheels have ___________.
No brakes
The Normal Brakes are powered by ___________.
Hydraulic System 4
According to the Non-normal procedure, you have extended the landing gear after takeoff due to the display of the BRAKE TEMP message. After _____ minutes and with the BRAKE TEMP message blank, the crew will retract the landing gear normally.
8
Normally, the Brake Pedals supply hydraulic pressure to each wheel brake by controlling the _________.
Normal Metering Valve
