When stopped, L or R Oil Level LO status message appears below which percentage?

When stopped, L or R Oil Level LO status message appears below which percentage?

• A. 70%
• B. 75%
• C. 80%
• D. 85%

Answer: (C)

Oil level LO is a low-oil annunciation that alerts when the engine oil quantity falls below a set threshold. On the CRJ-550, when the airplane is stopped, this LO message appears if either the left or right oil quantity drops below 80 percent of its capacity. The 80% value is chosen to give an early enough warning to catch potential leaks or excessive consumption, while still allowing for normal gauge variation. Reading the oil level with the engines off stabilizes the measurement, reducing false alarms from running conditions. So the LO warning shows at 79% and below. The other percentages would imply different alert points, which isn’t how the system is configured.

Oil level LO is a low-oil annunciation that alerts when the engine oil quantity falls below a set threshold. On the CRJ-550, when the airplane is stopped, this LO message appears if either the left or right oil quantity drops below 80 percent of its capacity. The 80% value is chosen to give an early enough warning to catch potential leaks or excessive consumption, while still allowing for normal gauge variation. Reading the oil level with the engines off stabilizes the measurement, reducing false alarms from running conditions. So the LO warning shows at 79% and below. The other percentages would imply different alert points, which isn’t how the system is configured.