131R
131R is a designation that can refer to several different things depending on the context. Without further specification, it is difficult to provide a definitive explanation.
In the realm of aviation, 131R might be a flight number or an aircraft registration. Flight numbers
In technical or scientific fields, 131R could represent a specific component, a standard, a catalog number,
The designation 131R might also appear in military contexts, potentially relating to equipment, unit designations, or