Landing Gear And Brakes Flashcards
What hydraulic system controls extension and retraction of the landing gear?
2
T/F: The proximity sensor electronic unity (PSEU) control gear and door extension and retraction.
TRUE
When does the gear handle illuminate?
Handle disagrees with gear selection
Like during initial selection when gear is in transition
T/F: Only hydraulic pressure keeps the gear in the down and locked position.
FALSE, over center locks also keep gear down and locked
When would pilots use the alternate gear extension?
Emergency/abnormal conditions
LDG GEAR INOP caution light, landing gear indication fails, loss of #2 hydraulic system fluid
T/F: When pulling the main landing gear release handle, only the gear unlocks are released.
FALSE, also main gear hydraulic door is released
What happens when pilots pull the main landing gear release handle (located in the ceiling above the First Officer)?
Main landing gear doors and gear up locks are released. The gear will free fall into the down position but will need to be pumped down.
Where is the handle found for the alternate gear extension hand pump?
Behind the copilot seat
If there is a failure in the weight on wheels (WOW) system, what might happen?
Gear may not retract
How many degrees can the nose wheel free caster?
120 degrees either side of center
T/F: Nose wheel steering is self-centering.
TRUE
How many degrees of steering are available using the tiller?
70 degrees either side of center
How many degrees of steering are available using the rudder pedals?
8 degrees either side of center
Which hydraulic system controls the normal brake and anti-skid system?
1 hydraulic system
Which hydraulic system does the emergency parking brake use?
2 hydraulic system
What wheel speed is needed for the anti skid system to activate?
10 kts on initial taxi
35 kts on landing (or after 5 seconds of WOW)
How many applications can a fully charged accumulator supply to the brakes?
Approximately 6 applications
T/F: All gear doors are attached to the gear assembly and open and close mechanically.
FALSE, FWD nose and AFT main doors are not attached to the gear and are hydraulically operated
Gear assemblies are held in the retracted position by _____.
Mechanical uplocks
What action routes retraction and extension hydraulic pressure back to the return lines?
Opening the ALTERNATE RELEASE DOOR
Not pulling the release, just opening the door
What happens when the nose wheel steering switch is selected to OFF?
Both steering modes (hand steering and pedals) are disabled and gear is in castor mode
Normal brake applications are powered by _____.
1 system using either pilot brake pedals
T/F: There is no differential braking or anti skid protection when using the EMERGENCY BRAKE lever.
TRUE
