At what altitude is the Decision Altitude (DA) set for ILS RWY 31 at FFC?

The Decision Altitude (DA) for an Instrument Landing System (ILS) approach is a critical parameter that indicates the altitude at which a pilot must decide whether to continue the approach to landing or execute a missed approach. For ILS RWY 31 at FFC, the specific DA is determined based on the aircraft's category and the airport's elevation.

In this case, the correct altitude of 1081 MSL (Mean Sea Level) corresponds to the minimum descent altitude necessary to maintain safe operations in accordance with standard procedures for an ILS approach. This altitude is established to ensure that the aircraft has sufficient altitude to clear any obstacles in the approach path while still allowing for a safe decision-making process for the pilot.

It's also important to note that decision altitudes can vary by runway and approach design, and they are formulated by considering obstacle data, airport elevation, and the aircraft's minimum performance specifications as defined in the approach plates. In the context of this example, the 1081 MSL altitude is the officially published decision altitude for this specific approach, aligning with the guidelines established by aviation regulatory authorities.