What does the "HYDR FL LO" light indicate?

The "HYDR FL LO" light specifically indicates that the hydraulic fluid level in the reservoir has dropped below a certain threshold, typically around 1 quart. This warning is crucial because hydraulic systems rely on adequate fluid levels to function properly. Low hydraulic fluid can lead to inadequate pressure, resulting in system failures or reduced performance of hydraulic components such as brakes and flaps.

Recognizing this warning prompt allows pilots and operators to take immediate action to rectify the fluid level, ensuring the safety and reliability of the hydraulic system in operation. Timely addressing the alert can prevent potential system malfunctions that could arise from insufficient hydraulic fluid.