A flag with an "R" in it is what?

A flag with an "R" in it is what?

• A. Minimum Reception Altitude (MRA)
• B. Recommended Altitude
• C. Radar altitude interval
• D. Minimum Descent Altitude

Answer: (A)

The symbol with an R stands for the minimum reception altitude. This is the lowest altitude at which the VOR/DME signal can be reliably received along that route segment. Staying at or above this altitude ensures your navigation receiver can consistently identify the correct radial and keep you on the intended path. If you drop below it, terrain, obstacles, or signal propagation issues can cause loss of reception, making VOR-based navigation unreliable. Other terms describe different concepts used on charts (such as descent minimums for approaches or radar altitude), so they don’t relate to the R flag symbol.