After recovery from Retreating Blade Stall, further flight is described as which?

• A. extremely dangerous
• B. safe
• C. impossible
• D. severely turbulent

Answer: (A)

The key idea is that retreating blade stall creates a highly unstable rotor condition. When a helicopter enters this stall, the retreating blade loses lift while the advancing blade carries most of the load, producing a rapid rolling tendency and degraded control authority. Recovery typically requires reducing forward airspeed and restoring balanced rotor lift, but even after you’ve recovered, the rotor system and airframe have been stressed and are operating in a highly unsettled state. The dynamics can remain sensitive to power, pitch, and cyclic inputs, and the risk of re-entering the stall or encountering unpredictable handling is still present. Because of that residual instability and the potential for a repeat stall or loss of control, continuing flight is described as extremely dangerous.