What type of caution is displayed when the FCC detects possible rotor flapping?

When the Flight Control Computer (FCC) detects possible rotor flapping, it activates a specific caution to alert the flight crew about the aerodynamic issue that can affect rotor performance and stability. The correct choice, "Flapping Critical Caution," accurately reflects the nature of the warning related to rotor flapping conditions.

This caution is vital because rotor flapping can lead to significant control challenges and may affect the overall flight safety. The system is designed to provide immediate feedback so that the pilot can take appropriate action to mitigate risks associated with rotor dynamics. By using the term "Critical" in the caution, it emphasizes the potentially serious nature of the issue that requires prompt attention.

Other options do not explicitly reference rotor flapping, making them less appropriate in this context. Each of the other choices relates to different systems or issues that do not pertain to rotor dynamics in the same manner, which is why they are not aligned with the caution in question.