Landing Gear and Brakes Flashcards
How many ways can landing gear be lowered
Normal, Alternate, Freefall
Vlo & Vle
200 KIAS
Limiting factor for Vlo & Vle
Mechanical doors
Red light on landing gear control unit
Disagreement between gear position and landing gear handle position
If you have 2 green A and 1 green B is the gear down and locked
Yes
Taxi light will illuminate when
The gear is down and locked
Gear warning
<1,500 RA and PLA 46° (EEC ON), 66° (EEC OFF) - Cancelable
<200 ft RA regardless of flap position or PLA - Non cancelable
Flap position selected beyond 17° - Non cancelable
Max tire speed
165 KAIS
Red DWONLOCK RELEASE
Disengages mechanical lock allowing to move gear handle. Verify airplane is not in ground mode. Check pressurization
Touchdown protection
Prevents brake actuation prior to 3 seconds after touchdown or wheel speed less than 50 KTS
Emergency brake overrides
Touchdown protection and antiskid
Which hydraulic system provides pressure to brakes
Green (outboard), Blue (inboard)
How to tell if the brakes are worn out
Brake ware indicator is flush with the pads. Parking brake must be on
Do you have antiskid in the air
No
Do you have antiskid in auto transfer
No. antiskid is on DC buses
How to tell if the antiskid is inoperative
Only when the ger is down
How may times can you use emergency brake before accumulator depletes
8-10 times
Do you have nose wheel steering in the air
No. Needs nose wheel and right main wheel shock absorbers to compress
Turn radius with tiller
50 degrees each side
STEER INOP MAP
Electronic control circuit failure or electronic box looses power
STEER INOP Glareshield
Tiller center position an nose wheel position is have > 9 degree difference or trigger is pressed
Do you have nosewheel steering in auto transfer
Yes. NWS is on EDC 1
What tells the system if the gear is up ,down or in trasistion
Proximity swithces
What tells the system if the gear is up ,down or in transition
Proximity sensors
At what speed does anu skid provide locked wheel protection
> 22 knots
What are A and B gear light powered by
A EDC 1, B EDC 2
What powers gear handle box
EDC 2
What powers electric override
EDC 1
The landing gear may be extended by
Normal system
Alternate electrical system
Free fall system
Position status of the landing gear is provided by
Proximity switches
The landing gear is powered through
Green hydraulic system
If free fall emergency method of lowering the gear is necessary what unlocks the uplock
Mechanical cables
How many landing gear position indicators systems are there
Two
Hydraulic pressure to the brake system is
3000 PSI
The EMB 120 have antiskid feature
True
When parking brake is applied how many brakes are activated
Four
If during takeoff a pilot forgot to release the parking brake
A voice message will warn the pilot
Brakes are automatically applied when
The landing gear is raised
How many indications does the pilot have to warn him that the parking brake is ON
Two
The antiskid system may be turned ON or OFF
True
Nosewheel steering is operated
Hydraulically through the green hydraulic system
The nosewheel is steered by
Rudder pedals and steering handle
The nose wheel may be steered through what arch with the tiller
100°
The nose wheel may be steered through what arch with the rudder
14°
Should the steering over travel occur the pilot may detect it on the preflight by means of a tell-tale indicator
True
