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.

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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)

Comparison with related terms

Term Definition Key Differences
Decision Height (DH) Height at which a pilot must decide to continue or abort an approach. Focuses on visual reference requirements during landing.
Minimum Descent Altitude (MDA) The lowest altitude to which a pilot can descend in a non-precision approach. MDA is used when visual references are not available, while DH is specific to precision approaches.

What to do if this term applies to you

If you are a pilot or involved in aviation operations, ensure you understand the decision height applicable to your approach procedures. Familiarize yourself with FAA regulations and consider using US Legal Forms to access templates for necessary compliance documents. In complex situations, consult a legal professional for tailored guidance.

Quick facts

Attribute Details
Typical Decision Height Varies by approach type; commonly between 200 to 300 feet.
Jurisdiction Federal Aviation Administration (FAA) regulations.
Importance Critical for ensuring safe landings and compliance with aviation standards.

Key takeaways

Frequently asked questions

Decision height is specific to precision approaches, while minimum descent altitude applies to non-precision approaches.