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[george[flytampa]]

Hey Guys,
Anyone know exactly what the device highlighted in the green square is for?





Thanks
george

[N757PM]

A Middle Marker (MM) or Inner Marker (IM) for published approaches?

Jase

[Tomas]

Nope... that's a RVR or "Runway Visual Range". Basically, it measures the distance between one RVR and another, getting a read of the maximum distance that an object can be seen on the runway. This is pretty useful for ATIS information and other meteorological matters.

RVR is measured up to a maximum value of 1500m. RVR values up to 800m. shall be given in increments of 30 to 60m., in accordance with available observations, and values above 800m. shall be given in increments of 100m. RVR values which do not fit the reporting scale in use shall be rounded down to the next lower step in the reporting scale. If RVR is observed from more than one location along the runway, the value for the touchdown zone shall be given first and shall be followed by all the values for successive locations whenever one of these values is lower than the value for the touchdown zone and less than 800m. The respective locations shall be identified in a concise and unambiguous manner.

Hope it helps.

[Scott B]

You all wrong...its just an over sized fly catcher LOL

[george[flytampa]]

Thanks Tomas.

I've seen the reselts of the data these things collect on METARs.
Never knew what they looked like though.

Thanks guys