Answers - Landing Gear


1. tail wheel , tandem , tricycle landing gear
2. fairings, wheel pants.
3. spring steel, aluminum, composite materials.
4. torque links, torque arms
5. locating cam assembly (centering cam)
6. camber
7. powerpack
8. emergency extension system
9. landing gear retraction test, swinging
10. shimmy damper
11. thermal plugs
12. torqued
13. lack of lubrication, bluish
14. excessive impact, indentations
15. top, right
16. transfer plate, rotors, stators
17. carbon disc brake
18. independent system, booster system, power brake system
19. hydraulic system
20. take off
21. skid, imminent
22. skidding
23. gravity, pressure
24. skidding
25. chevron


1. false; most use a nosewheel steering system
2. true
3. false; filled with nitrogen and hydraulic fluid.
4. false; nitrogen in the tires and the shock strut combine to smooth out bumps.
5. true
6. true
7. false; hydraulic pressure
8. true
9. false; on high performance; not small single engine aircraft
10. false; being down and locked
11. true
12. false; modern aircraft use two piece wheels
13. false; inner halves have provisions for brake rotors.
14. true; if the wheel bolts have failed the axle nut could be the only thing that keeps the wheel halves together.
15. true
16. false; segmented rotor disc brakes are used on large transport category aircraft
17. true
18. true
19. false; the anti skid system provides input to the autobrake system to prevent brake skid.
20. true
21. false; type VII tires are high performance for jet aircraft
22. true
23. false; 3 hours
24. false; deflate the tire before removing or probing any area where a foreign object is lodged.
25. true


1. Dry air or nitrogen, and hydraulic fluid.

2. Clean and inspect for damage and proper extension.

3. They keep the main landing gear wheels pointed in a straight ahead direction.

4. Hydraulic, or electrical.

5. A simple system consisting of mechanical linkage hooked to the rudder pedals.

6. A shimmy damper or in large aircraft using power steering the power steering actuators provide the dampening.

7. They reduce the pressure to the brakes and increase the volume of fluid flow.

8. Independent, power boost, and power control.

9. Pressurize the system.

10. A rubber O‐ring between the two wheel halves.

11. Proper tire inflation

12. Rapid or uneven wear near the edge of tread, and creep or slip when the brakes are applied.

13. During an annual or other inspections, when landing gear components have been replaced, and after hard landings

14. Discoloration (blue color)

15. To bring a fast moving aircraft to a stop during ground roll without tire skidding.

16. To relieve air pressure when the tire overheats due to hard braking or extended taxing to prevent tire blowout.

17. Gravity and pressure methods.

18. Mechanical (cables, linkages), electrical, or hydraulic.

19. Nosewheel centering internal cams or external track.

20. Carbon brakes

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