When must Flare Armed be verified on a dual autopilot ILS approach?

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Multiple Choice

When must Flare Armed be verified on a dual autopilot ILS approach?

In a dual autopilot ILS approach, the flare phase must be prepared so the aircraft can transition smoothly from the approach to the landing flare. Verifying that flare is armed by no later than 500 feet radio altitude ensures the system has enough time to confirm the flare capability and, if needed, initiate the proper flare sequence just above the runway. This timing provides a reliable window for the auto-flare logic to engage and for any fault checks to be completed before the actual flare must occur, reducing the risk of a abrupt touchdown or a missed flare. Verifying earlier than 500 feet would be fine, but the requirement specifies no later than 500 feet to align with standard operating procedures and the autopilot’s flare window. Waiting until glideslope intercept or 1000 feet would be too late for a controlled flare transition, and verifying after touchdown is not feasible since the flare must be armed before the flare event.

In a dual autopilot ILS approach, the flare phase must be prepared so the aircraft can transition smoothly from the approach to the landing flare. Verifying that flare is armed by no later than 500 feet radio altitude ensures the system has enough time to confirm the flare capability and, if needed, initiate the proper flare sequence just above the runway. This timing provides a reliable window for the auto-flare logic to engage and for any fault checks to be completed before the actual flare must occur, reducing the risk of a abrupt touchdown or a missed flare.

Verifying earlier than 500 feet would be fine, but the requirement specifies no later than 500 feet to align with standard operating procedures and the autopilot’s flare window. Waiting until glideslope intercept or 1000 feet would be too late for a controlled flare transition, and verifying after touchdown is not feasible since the flare must be armed before the flare event.

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