1. One Tri-Color LED pilot indicator.  Alternating illumination green, white, and yellow for the first ten seconds after power on, to test the LED.  After the LED test:

• If system internal tests pass and the unit sensor oxidation reading is within an accurate temperature range, data logging begins and the LED periodically blinks green.
• If internal system built-in-tests fail the LED does not illuminate any color.
• If the oxidation reading temp is not in an accurate temperature range the LED blinks white until within an accurate range, then the LED blinks green and data logging begins.
• If the system tests pass and the oxidation temperature is not within accurate temperature range, and a contamination is sensed, the LED will illuminate steady state yellow and logs the event.

  
  

2. When the oil has reached the end of its useful life, the LED will illuminate steady state white.
   
   
3. When the oil becomes contaminated or high oil temperature operation, the LED will illuminate steady state yellow. 
   
   
4. No pilot action is required in-flight when the LED illuminates any color, or if the LED does not illuminate.
   
   
5. The Pilot is to alert (notify) aircraft maintenance personnel, if the LED illuminates steady state any color or if the LED does not illuminate, before flight or if during flight upon reaching destination.
   
   
6. Maintenance should investigate when pilot alerts them by doing the following:

• Verify GAA Aviation Oil Advantage LED illuminated color or no illumination.
• "Take-a-close-look-at-the-oil", and perform necessary maintenance.
• Download the Aviation Oil Advantage System time date stamp data log memory, etc.

Cockpit Pilot Display Light Operation Summary: