During the onset of retreating blade stall, the ________ light illuminates to warn of excessive blade loading.

• A. Limit
• B. Alarm
• C. Warning
• D. Indicator

Answer: (A)

The main idea is that rotor blade loading has a defined limit, and the cockpit has a dedicated indicator that lights when you’re approaching or reaching that limit during retreating blade stall. During retreating blade stall, the blade on the opposite (retreating) side can experience excessive angle of attack due to high forward airspeed and heavy loading. The MH-65E uses a LIMIT light to warn the crew that blade loading is at or beyond the allowable threshold, signaling that corrective action is needed to avoid actual stall. When this light comes on, the appropriate response is to reduce blade loading to stay within safe limits, typically by reducing collective or adjusting airspeed to relieve the retreating blade. The other labels—Alarm, Warning, Indicator—don’t correspond to this specific, limit-based condition on this helicopter, so LIMIT is the correct designation.