Rapid control inputs during maneuvers at high angle of bank may cause momentary __________ following, or concurrently with, illumination of the LIMIT light, SERVO LIMIT caution message on the EICAS page, and audio tone.

Rapid control inputs during maneuvers at high angle of bank may cause momentary __________ following, or concurrently with, illumination of 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)

Rapid control inputs at a high bank push the helicopter’s hydraulic servo system toward its limits. When that limit is reached, the protection logic kicks in, and you’ll see the LIMIT light, the SERVO LIMIT caution on the EICAS, and hear the audio tone. To prevent damage from excessive servo movement, the flight controls may momentarily lock in position as the system holds the deflection until it’s within safe bounds. This lock is brief and releases once the inputs slow or the aircraft is back within limits, after which normal control response returns. This behavior is different from a servo jam, which implies a continuous mechanical obstruction; it also differs from a loss of hydraulic pressure, which would degrade or lose control capability rather than cause a brief protective lock. The SEC HYD HI Pres warning points to hydraulic pressure issues, not this transient protective lock during aggressive maneuvering.

Rapid control inputs at a high bank push the helicopter’s hydraulic servo system toward its limits. When that limit is reached, the protection logic kicks in, and you’ll see the LIMIT light, the SERVO LIMIT caution on the EICAS, and hear the audio tone. To prevent damage from excessive servo movement, the flight controls may momentarily lock in position as the system holds the deflection until it’s within safe bounds. This lock is brief and releases once the inputs slow or the aircraft is back within limits, after which normal control response returns.

This behavior is different from a servo jam, which implies a continuous mechanical obstruction; it also differs from a loss of hydraulic pressure, which would degrade or lose control capability rather than cause a brief protective lock. The SEC HYD HI Pres warning points to hydraulic pressure issues, not this transient protective lock during aggressive maneuvering.