What is the Decision Altitude (DA) for an LNAV/VNAV approach?

The Decision Altitude (DA) for an LNAV/VNAV approach is established to provide a standard reference for pilots during the final stages of landing. Specifically, the DA for an LNAV/VNAV approach is typically set at 200 feet. This altitude is critical as it marks the height at which a pilot must decide whether to continue the approach to landing or execute a missed approach if visual references are not sufficient to continue safely.

During an LNAV/VNAV approach, the use of lateral navigation (LNAV) and vertical navigation (VNAV) allows for a precision-like approach to a runway that is not equipped with an Instrument Landing System (ILS). The 200-foot DA enables pilots to maintain a safe and controlled descent while ensuring that they have adequate time to assess the surrounding conditions and runway alignment shortly before landing. This standardization helps enhance safety and consistency in approach procedures across different airports and aircraft types.