Landing Gear and Brakes Flashcards
Which hydraulic system controls extension and retraction of the landing gear?
2.
T or F: the proximity sensor electronic unit (PSEU) controls gear and door extension and retraction.
True.
When does the gear handle illuminate?
Anytime the handle disagrees with the gear position.
T or F: only hydraulic pressure keeps the gear in the down and locked position.
False, there are overcenter locks.
When would pilots use the alternate gear extension?
The LDG GEAR INOP caution light illuminates, landing gear indication fails, #2 hydraulic system is lost.
T or F: when pulling the main landing gear release handle, only the gear uplocks are released.
False, the main gear hydraulic door is released as well.
What happens when pilots pull the main landing gear release handle (located in the ceiling above the First Officer)?
The main gear hydraulic door and gear uplocks are released.
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?
WT ON WHEELS caution light might illuminate, the landing gear may not retract.
How many degrees can the nose wheel free caster?
Up to 120 degrees either side.
T or F: nose wheel steering is self centering.
True.
How many degrees of steering are available using the tiller?
70º either side.
How many degrees of steering are available using the rudder pedals?
8º either side.
Which hydraulic system controls the normal brake and anti-skid system?
1.
Which hydraulic system does the emergency parking brake use?
2.
What wheel speed is needed to for the antiskid system to activate?
On takeoff 10 knots. On landing 35 knots.
How many applications can a fully charged accumulator supply to the brakes?
6 brake applications.
T or F: all gear doors are attached to the gear assembly and open and close mechanically.
False.
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.
What happens when the nose wheel steering switch is selected to OFF?
Both steering systems are disabled and the gear is in caster mode.
Normal brake applications are powered by ____.
1 hydraulics.
What is the purpose of the anti-skid system?
To modulate hydraulic pressure to individual wheel brakes during a skid.
T or F: there is no differential braking or anti-skid protection when using the EMERG BRAKE lever.
True.
