What is the clearance provided by MORA in areas where the terrain is less than 5000 feet?

MORA, or Minimum Off-Route Altitude, is a safety measure used in aviation to provide a buffer for aircraft flying in areas of less than 5000 feet terrain elevation. The primary purpose of MORA is to ensure that aircraft have a safe altitude that provides adequate clearance over obstacles, as well as terrain. In terrain areas that are less than 5000 feet, MORA provides a clearance of 1000 feet. This additional altitude helps pilots avoid collisions with terrain and ensures safe navigation, especially in challenging topography.

The choice of 1000 feet is based on safety regulations that take into account possible variations in terrain elevations and ensure that aircraft maintain a safe operational distance above the highest point in the area. This is critical in mountainous or uneven terrain where elevation can change rapidly, and having a consistent clearance height allows for safer flight paths.

Other altitude options, such as 2000 feet, 3000 feet, or 500 feet, do not align with the standard clearance set by MORA for terrain under 5000 feet, which is why those choices would not be considered correct.