Landing Gear and Brakes Flashcards
What is the Emergency Landing Gear Nitrogen Blowdown bottle pressure?
3000 PSI @ 70 degrees F
What is the maximum speed for lowering and raising the Landing Gear (VLO)?
VLO = 225 KCAS
Anti-Skid Braking is available from which hydraulic systems?
Combined Hydraulic System Utility Hydraulic System
Aux Hydraulic System
What is the maximum tire speed GIV SP (s/n 1214 & sub or non-SP
with ASC 190)?
195 Kts GS
What is the maximum speed for flying with the landing gear extended (VLE)?
VLE = 250 KCAS
What is the maximum speed for alternate extension of the landing gear (operation of the emergency gear handle)?
175 KCAS
How are the wheel well doors opened in preparation for the exterior preflight
inspection?
Through the auxiliary hydraulic pump, by activating the ground service
valve after the door pins have been inserted
- During the exterior preflight inspection, what is the minimum acceptable
reading for the brake accumulator pre-charge?
o
1200 psi at 70 F
- How do you check the parking brake accumulator pre-charge?
Chock the aircraft and bleed off pressure by cycling the parking brake handle,
or operate the dump valve in the nose wheel well
- During the exterior preflight inspection, what is the minimum acceptable
reading for the emergency landing gear extension air bottle?
o
3000 psi at 70 F
- What is the function of the landing gear emergency reset handle?
To reset the 3 landing gear dump valves to hydraulic operation
- Why must the nutcracker test switch not be pressed while on the ground?
Depressing the test switch simulates the nutcracker in-flight condition,
which affects many airplane systems including momentarily unlocking the
landing gear handle downlock solenoid
- If the gear does not retract after takeoff but the handle moves to the “UP”
position, what is the likely cause?
The landing gear pins have not been removed from the gear struts
- With “BRAKE FAIL” CAS message, what is a likely result upon landing?
A complete loss of normal pedal braking
- In a GIV with a HMAB brake system, what is the recommended procedure if an
“ANTI-SKID FAIL” CAS message illuminates during landing roll-out?
Leave the anti-skid switch “ON”, as there may still be anti-skid protection on
one pair of wheels (inboard or outboard)
- If the landing gear handle is in the “UP” position, what is indicated by a red
light in the handle?
One or more of the landing gear doors are not closed
- If the landing gear handle is in the “DOWN” position, what is indicated by a
red light in the handle?
One or more of the landing gear struts are not down and locked
- How many emergency landing gear extensions are available with a fully
charged (3000 psi) nitrogen bottle?
One
- What systems would be affected if the nutcracker system failed to shift to the
air mode after takeoff?
Landing gear will not retract
Ground spoilers will deploy with switch armed and power levers at idle
Thrust reversers can be deployed in flight
Pressurization will remain at 0.25 psid and the cabin will climb at approximately
same rate as Aircraft
- With a total loss of electrical power on the aircraft, what is the affect on the
landing gear system?
The landing gear will operate normally but without indications
- How can a “STEER BY WIRE FAIL” CAS message be cleared?
Cycle the nosewheel steering switch
- What does the amber “ANTI SKID FAIL” CAS message indicate?
Indicates that the normal anti-skid control circuit has failed
- What does the amber “BRAKE FAIL” CAS message indicate (HMAB aircraft)?
Indicates loss of both combined and aux pressure while pedals are depressed
- What systems are affected if the nose wheel nutcracker fails to the air mode?
Nose wheel steering circuit
‘G’ Monitor system
- What prevents blown tires with hot brakes?
Fuse plugs
- What is the purpose of the AUX Pump / Brake System Check during the Before
Starting Engines checklist?
To test the automatic latching feature of the aux pump when combined or
utility system pressure is not available for braking
- What is the purpose of the BRAKE NUTCRACKER O’RIDE switch (brake-by-
wire aircraft only)?
To allow the crew to perform a brake confidence check during flight
- What type of anti-skid protection is available with the use of the parking /
emergency brake?
Anti-skid protection is not available with parking /emergency brake
