Landing Gear & Brakes Flashcards
Under normal conditions, which system powers the landing gear?
Hydraulic System A
Describe how tires are protected from explosion during thermal expansion caused by Hot Brakes
4 thermal fuse plugs in each inner wheel half melt at 177c
When is the Landing Gear Lever locked
When on the ground.
Yes can be overridden with the Lever Lock Override Trigger
What do the red and green position lights on the forward landing gear panel indicate?
Red: Landing gear is not down and locked with either or both thrust levers at idle and below 800’ AGL
or landing gear is in disagreement with the lever
Green: Landing gear is down and locked
What is the purpose of the aft overhead panel Supplemental Landing Gear indicator lights?
Indicated that the related gear is down and locked.
what protects the aircraft from loose tread or foreign object debris in the main wheel well during landing gear retraction?
Frangible Fitting
If the No.1 engine fails, how is the hydraulic capability of system A affected? How is the gear raised at a normal rate?
Loose EMDP 1.
Landing Gear Transfer Valve which allows system B engine-driven pump to supply the volume of hydraulic fluid needed to retract the gear.
When is nose wheel steering active?
Is powered when the nose gear is in the down position and compressed by the weight of the aircraft.
If Normal and Alternate Brake pressure is lost, how is braking accomplished? Are there any limitations.
Braking is accomplished through the brake accumulator.
It can provide 6 brake applications.
Which Hydraulic systems can pressurize the parking brake?
Either System A or B
Which hydraulic system(s) have Anti-skid?
Both the Normal and Alternate Hydraulic Braking systems have anti-skid
Normal: All 4 main wheels are controlled individually
Alternate: Anti-skid is applied to main gear pairs
Is the Alternate Braking System capable of supplying Autobrakes?
No
When can RTO braking be armed? When is RTO braking available?
Armed: On the ground, thrust levers at idle, wheel speed less than 60 kts
Available: It is available after reaching a wheel speed of 90 kts
What does a Parking Brake Warning (red) light indicate?
The parking brake is on
The Alternate Brake System is powered by?
Hydraulic System A
With RTO selected, if the takeoff is rejected prior to wheel speed reaching 90kts: ______________ and ______________
Autobraking is not initiated the and the RTO autobrake function remains armed
How is braking available if both Hydraulic Systems A and B are lost?
Trapped hydraulic pressure in the Brake Accumulator (System B) can still provide several (6) brake applications or parking brake application for 8 hours
In the MAX, what are the positions of the Landing Gear Lever/
Up, Down
What kind of brake discs does the MAX have?
Carbon
