During maneuvers with rapid control inputs at high angle of bank, what may occur momentarily after, or concurrently with, the LIMIT light, SERVO LIMIT caution message on the EICAS page and audio tone?

During maneuvers with rapid control inputs at high angle of bank, what may occur momentarily after, or concurrently with, the LIMIT light, SERVO LIMIT caution message on the EICAS page and audio tone?

• A. Locking of the flight controls
• B. Indications of a servo jam
• C. Loss of hydraulic pressure
• D. Illumination of the SEC HYD HI Pres

Answer: (A)

When the controls are moved rapidly in a steep bank, the servo actuators can reach their travel limit. To protect the system from overshoot or mechanical damage, the flight-control system temporarily clamps or resists further movement—essentially a brief lockout of the controls. That momentary lock can occur right after or at the same time as the LIMIT light and the SERVO LIMIT caution, which are signaling that the servos have hit their limit. It’s a protective behavior, not a fault like a servo jam or loss of hydraulic pressure, and normal control authority will return once the limit condition clears. If you were to experience a true servo jam or hydraulic pressure loss, those would present with different indicators and symptoms.

When the controls are moved rapidly in a steep bank, the servo actuators can reach their travel limit. To protect the system from overshoot or mechanical damage, the flight-control system temporarily clamps or resists further movement—essentially a brief lockout of the controls. That momentary lock can occur right after or at the same time as the LIMIT light and the SERVO LIMIT caution, which are signaling that the servos have hit their limit. It’s a protective behavior, not a fault like a servo jam or loss of hydraulic pressure, and normal control authority will return once the limit condition clears. If you were to experience a true servo jam or hydraulic pressure loss, those would present with different indicators and symptoms.