What does OCH stand for in aviation terminology?

In aviation terminology, OCH stands for Obstacle Clearance Height. This measurement is crucial for ensuring that an aircraft can safely navigate through areas where obstacles, such as buildings or terrain, might interfere with its flight path. The Obstacle Clearance Height is established to provide a buffer above the highest obstacle in a given area, allowing for safe maneuvering, especially during takeoff and landing phases where low altitudes are involved.

A correct understanding of OCH is essential for pilots and air traffic controllers, as it helps to maintain safe distances between aircraft and potential hazards. By adhering to this height, pilots can ensure they are operating within safety parameters, particularly in challenging environments or during operations in and around airports where obstacles are prevalent.