What is the maximum reported Runway Visual Range (RVR) in METAR?

The maximum reported Runway Visual Range (RVR) in METAR is P10000 feet. This indicates that when visibility conditions are sufficient, pilots can expect to see up to 10,000 feet down the runway. It is important for operational safety, as an RVR of this length ensures that pilots have ample visual reference for landing and takeoff under good visibility conditions.

RVR values are crucial for flight operations, as they provide pilots with an indication of how far they can see down the runway, which is vital during landing and takeoff, especially in low visibility conditions. While values such as P3000, P5000, and P6000 feet indicate reasonably good conditions as well, they do not represent the maximum limit set for reporting in METAR, which is established at P10000 feet. Thus, for maximum reporting standards, P10000 feet is the accurate answer and aligns with aviation regulations and practices.