What should be recorded in the METAR report if the RVR for runway 06 left shows 1000 feet but the 10-minute readout is not functioning?

In this scenario, when the Runway Visual Range (RVR) for runway 06 left indicates a value of 1000 feet but the 10-minute readout is unavailable, the correct procedure is to record something in the report to signify the situation regarding the RVR.

Recording "RVRNO" in column 14 indicates that the RVR is not operational, providing crucial information for those interpreting the METAR report. This helps ensure that pilots and other users of the data are aware of the status and can make informed decisions regarding runway conditions.

In column 8, since the 10-minute RVR readout is not functioning, there is no requirement to provide a specific RVR value, as the lack of a valid 10-minute mean could mislead users into thinking the reported value is reliable and current.

This combination effectively communicates both the existing RVR condition and the operational status of the measuring equipment, fulfilling the reporting standards required for safety in aviation operations.