What defines the missed approach point on a precision approach?

The missed approach point on a precision approach is defined by the Decision Height (DH) on the glideslope. This is a critical altitude at which a pilot must decide whether to land or execute a missed approach if the required visual references for landing are not visible. When flying a precision approach, the glideslope provides guidance both vertically and horizontally, allowing pilots to follow a specific path to the runway.

At the DH, the pilot has to assess the situation; if the aircraft has not crossed the DH and the required visual references for a safe landing are not in sight, the pilot must initiate a go-around or missed approach. This decision point is essential for maintaining safety in low-visibility conditions, ensuring that pilots adhere to established protocols while navigating to land.

Other options such as the altitude at the first waypoint, time from the Final Approach Fix (FAF), and ground speed adjustment do not determine the missed approach point on a precision approach. Instead, they serve different functions in flight navigation and approach management.