What is the minimum altitude to cross RAMKE intersection during the S-LDA RWY 6 approach at ROA?

The minimum altitude to cross the RAMKE intersection during the S-LDA RWY 6 approach at ROA is 4,300 feet MSL. This altitude is established based on the approach procedures outlined in the relevant approach plate for the S-LDA (Straight Localizer Directional Aid) approach.

Crossing at this altitude ensures that aircraft remain within safe operational limits above any obstacles in the area while also ensuring compliance with the specific approach protocol for accurately descending toward the runway. Adhering to these minimum altitudes is crucial for maintaining safety and situational awareness during the approach, particularly when navigating variable terrain and other air traffic.

Being too low could potentially lead to controlled flight into terrain (CFIT) incidents, while being too high could result in excessive distance from the runway resulting in difficulties while preparing for the landing sequence. Thus, the 4,300 MSL crossing altitude at RAMKE is critical for safe and successful operations during the approach.