What is the Terminal (T) VOR service volume in nautical miles?

What is the Terminal (T) VOR service volume in nautical miles?

• A. 25 NM
• B. 40 NM
• C. 130 NM
• D. 100 NM

Answer: (A)

VOR service volumes define how far you can expect a VOR signal to be reliably received, and they differ by the VOR type. For a Terminal VOR, the published service volume is 25 nautical miles from the station up to 12,000 feet above the station. This smaller radius fits the needs of approach and departure operations in busy terminal airspace. The other numbers correspond to other VOR types: Low VORs use about 40 NM, and High VORs use about 130 NM. A 100 NM figure isn’t a standard VOR service volume.

VOR service volumes define how far you can expect a VOR signal to be reliably received, and they differ by the VOR type. For a Terminal VOR, the published service volume is 25 nautical miles from the station up to 12,000 feet above the station. This smaller radius fits the needs of approach and departure operations in busy terminal airspace.

The other numbers correspond to other VOR types: Low VORs use about 40 NM, and High VORs use about 130 NM. A 100 NM figure isn’t a standard VOR service volume.