What altitude must be maintained while executing a missed approach before the MAP?

In a missed approach procedure, it is imperative to maintain an altitude at or above the Minimum Descent Altitude (MDA) or Decision Altitude (DA) until the missed approach point (MAP) is reached. This requirement ensures that the aircraft remains safely above any obstacles or terrain that could pose a hazard during the procedure.

The MDA is defined as the lowest altitude, expressed in feet above mean sea level (MSL), to which a descent is authorized on final approach for landing. In contrast, the DA is the altitude at which a decision must be made to either continue for landing or execute a missed approach. By adhering to this altitude restriction, pilots can avoid potential hazards and ensure a controlled transition to the missed approach procedure.

Maintaining an altitude below MDA/DA could expose the aircraft to terrain or obstacles, which is unsafe and not in accordance with instrument flight rules. Setting altitude at only 500 feet AGL does not account for the specific requirements of the approach being executed, and staying at MDA/DA without specifying "above" could lead to safety concerns if terrain or obstacles exist. Thus, the correct approach is to remain at or above the established MDA or DA until the MAP is safely passed.