How does the Reference Datum Height (RDH) contribute to the safety and precision of an instrument approach?
Understand the Problem
The question asks about the contribution of Reference Datum Height (RDH) to the safety and precision of an instrument approach. We need to identify the correct definition of RDH from the given options.
Answer
RDH provides accurate height references for pilots during instrument approaches, enhancing safety and precision during landing.
The Reference Datum Height (RDH) is crucial for the safety and precision of an instrument approach by serving as the starting point for vertical guidance. It ensures pilots have accurate height references during the final approach, aiding in obstacle clearance and aligning with the runway for a safe landing.
Answer for screen readers
The Reference Datum Height (RDH) is crucial for the safety and precision of an instrument approach by serving as the starting point for vertical guidance. It ensures pilots have accurate height references during the final approach, aiding in obstacle clearance and aligning with the runway for a safe landing.
More Information
The Reference Datum Height (RDH) is used in aviation to define the height above the runway threshold where the glide path intersects. It enables standardization and accurate vertical guidance during precision instrument approaches, such as those using an Instrument Landing System(ILS).
Tips
A common mistake is confusing RDH with Threshold Crossing Height (TCH). RDH is a reference point used in procedure design, while TCH is the actual height of the glide path at the threshold during an operation.
Sources
- Reference datum height - Wikipedia - en.wikipedia.org
- [PDF] Aircraft Operations - ffac.ch
- [PDF] ADVISORY CIRCULAR - ICAO - icao.int
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