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Reporter stated the ASOS reported inaccurate visibility of one and one quarter SM when it was actually 10 SM. This caused the airport to be reported as IFR.
| Attributes | |
| ACN | 343411 |
| Time | |
| Date | 199608 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : elp |
| State Reference | TX |
| Environment | |
| Light | Dusk |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : clearance delivery |
| Qualification | controller : radar |
| Experience | controller non radar : 2 controller radar : 2 |
| ASRS Report | 343411 |
| Person 2 | |
| Affiliation | government : faa |
| Function | oversight : supervisor |
| Qualification | controller : radar |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
ASOS was transmitting visibility as 1 1/4 SM during a thunderstorm when it was actually greater than 10 SM. This caused us to call the WX IFR when it was actually VFR. ASOS is unrealistic and unsafe. ASOS should be removed from ATC.
Original NASA ASRS Text
Title: RPTR STATED THE ASOS RPTED INACCURATE VISIBILITY OF ONE AND ONE QUARTER SM WHEN IT WAS ACTUALLY 10 SM. THIS CAUSED THE ARPT TO BE RPTED AS IFR.
Narrative: ASOS WAS XMITTING VISIBILITY AS 1 1/4 SM DURING A TSTM WHEN IT WAS ACTUALLY GREATER THAN 10 SM. THIS CAUSED US TO CALL THE WX IFR WHEN IT WAS ACTUALLY VFR. ASOS IS UNREALISTIC AND UNSAFE. ASOS SHOULD BE REMOVED FROM ATC.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.