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- 1. Multiple Choice
What is the purpose of a compensating port or valve in a brake master cylinder of an independent brake system?
Assists in the master cylinder piston return
Prevents fluid from flowing back to the reservoir
Permits the fluid to flow toward or away from the reservoir as temperature changes
- 2. Multiple Choice
If an airplane equipped with master cylinders and single disc brakes has excessive brake pedal travel, but the brakes are hard and effective, the probable cause is?
The master cylinder one way cup is leaking
Worn brake linings
Worn brake disc causing excessive clearance between the notches on the perimeter of the disc and the splines or keys on the wheel
- 3. Multiple Choice
Internal leakage in a brake master cylinder unit can cause the pedal to slowly creep down when pedal pressure is applied, this is known as?
Soft brakes
Hard brakes
Fading brakes
- 4. Multiple Choice
How can it be determined that all air has been purged from a master cylinder brake system?
By operating a hydraulic unit and watching the system pressure gauge for smooth, full scale deflection
By noting whether the brake is firm or spongy
By noting the amount of fluid return to the master cylinder upon brake release
- 5. Multiple Choice
What is one effect a restricted compensator port of a master cylinder will have on a brake system?
The brakes will operate normally
The reservoir will be filled by reverse flow
The restriction will cause dragging brakes
- 6. Multiple Choice
What would be the effect if the piston return spring broke in a brake master cylinder?
The brakes would become spongy
The brake travel would become excessive
The brakes would drag
- 7. Multiple Choice
If it is determined that spongy brake action is not caused by air in the brake system, what is the next most likely cause?
Worn brake lining
Internal leakage in the master cylinder
Deteriorated flexible hoses
- 8. Multiple Choice
Many brake types can be adapted to operate mechanically or hydraulically. Which type is not adaptable to mechanical operation?
Single disc spot type
Single servo type
Expander tube type
- 9. Multiple Choice
What would be the cause of brake chatter when brake pressure is applied?
Wrong type of brake pads
Glazed brake pads
Broken brake pads
- 10. Multiple Choice
What method is used when bleeding a brake system using a pressure pot?
Bottom to top
Top to bottom
Out to in
- 11. Multiple Choice
Debooster cylinders are primarily used for what purpose in the power brake system?
Reduce brake pressure and maintain static pressure
Relieve excessive fluid and ensure a positive pressure
Reduce pressure to the brake and increase the volume of fluid flow
- 12. Multiple Choice
What is the purpose of a relief valve in a brake system?
Reduce pressure for brake application
Prevent the tire from skidding
Compensate for thermal expansion
- 13. Multiple Choice
Deboosters valves are used for what purpose in the power brake system
Ensure rapid application and slow release of the brakes
Reduce brake pressure and maintain static pressure
Reduce pressure and stop fluid loss due to line rupture
- 14. Multiple Choice
What is the pressure source for the power brake system?
Main hydraulic system
Power brake reservoir
The master brake cylinder
- 15. Multiple Choice
Which statement is true regarding an aircraft equipped with hydraulically operated multiple disk type brake assemblies?
There are no disk clearance checks due to self-compensating cylinder assemblies
Do not set parking brakes when the brakes are hot
No parking brake provisions are possible for this type of brake assembly
- 16. Multiple Choice
Lockout Debooster are pressure reducing valves that?
Allow full Debooster piston travel without fluid from the high pressure side entering the low pressure chamber side
Cannot allow full Debooster piston travel without fluid from the high pressure side entering the low pressure chamber side
Must be bled separately after brake bleeding has been completed
- 17. Multiple Choice
In brake service work, the term “Bleeding the brakes” is the process of:
Withdrawing only air from the system
Withdrawing fluid from the system for the purpose of removing air that has entered the system
Replacing small amounts of fluid in the reservoir
- 18. Multiple Choice
Aircraft brakes requiring a large volume of fluid to operate the brakes generally
Use independent master cylinder systems
Do not use brake system accumulators
Use power brake control valves
- 19. Multiple Choice
Small aircraft primarily use what type of bake system?
Dependent
Independent
Multiple disk
- 20. Multiple Choice
What is the first thing to check if a master cylinder has excessive travel?
Pilots operating handbook
Fluid level
Pneumatic charge
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