Oil System Malfunction/Low Oil Pressure/CHIP

Question 1

For what conditions will you use the oil system malfunction or low oil pressure checklist?

Answer 1

• Red OIL PX annunciator
• Amber OIL PX annunciator
• Oil PX Fluctuations
• Oil Temp out of limits
• Visibly confirmed leaking oil from the aircraft

Question 2

If an OIL PX annunciator illuminates, when should you first check the OIL TRX circuit breaker on the battery bus?
Are you allowed to re-set the circuit breaker if it is popped?

Answer 2

If the oil pressure indicates <5 psi

Yes

Question 3

What is the indication for a SCU failure?

Answer 3

Illumination of both red and amber OIL PX annunciators while the oil pressure gage indicates normal pressure

Question 4

Does any illumination of the amber OIL PX annunciator indicate a malfunction?

Answer 4

No, due to the sensitivity of the SCU a momentary illumination of the amber OIL PX annunciator may appear.

Question 5

How long must the amber OIL PX annunciator be illuminated for consider the oil system to actually be malfunctioning?

Answer 5

5 seconds

Question 6

What should you be cautious of in regards to your power settings with an oil malfunction or low oil pressure?

Answer 6

Use caution with high power settings because it may aggravate the condition

Question 7

How does the oil system detect temperature and pressure?

Answer 7

They are sensed by transducers downstream of the main oil pump and the signal is sent to the EDM

Question 8

With the engine shut down, what may oil px indicator display a value up to?

Answer 8

4 psi

Question 9

What does a CHIP annunciator indicate?

Answer 9

Possible metal contamination in the engine oil supply.

Question 10

Explain the causes for an amber and/or red annunciator for IDLE and ABOVE IDLE

Answer 10