Oil System Components
What is an oil filter used for?
To remove contaminants from the oil.
What does an oil pressure gauge indicate?
Pressure of oil circulating in the system.
Why is regular oil analysis important?
Detects wear metals and engine condition.
What are signs of oil starvation?
Low pressure, high temperature, and engine noise.
Why do turbine engines typically use dry sump systems?
Better lubrication control under all operating conditions.
What is a full-flow oil filter?
All oil passes through it before reaching engine parts.
What does an oil temperature gauge indicate?
Temperature of oil leaving the engine.
What is checked during an oil system inspection?
Leaks, oil level, filter condition, and lines.
What causes excessive oil consumption?
Worn rings, leaks, or improper operation.
What is coking in turbine engines?
Oil breakdown from excessive heat forming carbon deposits.
What is a bypass filter?
Only part of the oil flow is filtered at a time.
What is normal oil pressure range dependent on?
Engine design and manufacturer specifications.
What must be done before servicing oil?
Check proper type and grade per manufacturer.
What could metal particles in oil indicate?
Internal engine wear or damage.
What is the purpose of an oil pressure regulator?
Maintains constant pressure regardless of engine speed.
What is a chip detector?
Device that detects metal particles in the oil.
What could cause high oil pressure?
Cold oil, blockage, or faulty relief valve.
Why must oil lines be properly secured?
To prevent vibration damage and leaks.
What happens if oil cooler is blocked?
Oil temperature increases.
Why is pre-oiling sometimes required?
Ensures lubrication before engine startup after storage.
What does the oil tank vent do?
Prevents pressure buildup and allows proper oil flow.
What could cause high oil temperature?
Low oil quantity, poor cooling, or excessive engine load.
What is the purpose of safety wiring oil system components?
Prevents loosening due to vibration.
What could cause oil contamination?
Fuel dilution, dirt, or moisture.
What FAA reference covers lubrication systems?
FAA AC 65-12 (Powerplant Handbook) and AC 65-9 (General Handbook).