Understanding Decision Height [Aeronautics and Space]: A Key Concept in Aviation
Definition & Meaning
Decision height (DH) is a specific altitude during an instrument approach procedure in aviation. It is the height above ground level at which a pilot must make a crucial decision: either to continue the approach if they can see the required visual references or to initiate a missed approach if they cannot. This height is crucial for ensuring safety during landing operations.
Legal Use & context
Decision height is primarily used in aviation law and regulations, particularly those set forth by the Federal Aviation Administration (FAA). It is relevant in contexts involving flight safety, air traffic control procedures, and compliance with aviation regulations. Pilots and aviation operators must adhere to these regulations to ensure safe operations, and they may utilize legal forms related to flight operations and safety compliance.
Real-world examples
Here are a couple of examples of abatement:
Example 1: During an instrument landing approach, a pilot reaches the decision height of 200 feet. If they do not see the runway or other required visual cues, they must execute a missed approach to ensure safety.
Example 2: A pilot conducting a precision approach with a decision height of 300 feet must decide whether to land or abort the landing based on visibility conditions at that altitude. (hypothetical example)