The MDA states the minimum altitude in MSL to safely fly above any obstructions or terrain in the final approach flight-path before visual contact with the runway is made. Unlike a DA in a Precision Approach, an MDA requires that after crossing the Final Approach Fix, the pilot is to descend and maintain MDA until the pilot reports that the runway is in sight, allowing the landing to safely be completed visually. In contrast to the ILS approach, which displays lateral and vertical position, the VOR/DME approach only shows the lateral position of the aircraft and its range to the runway. Due to increased azimuth error associated with the use of VORs and lack of vertical guidance (Glide Slope), the MDA is therefore often higher than a DA (Decision Altitude) for an ILS.