|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||0601 To 1200|
|Locale Reference||airport : den|
|Affiliation||government : faa|
|Function||controller : local|
|Qualification||controller : non radar|
|Anomaly||other anomaly other|
|Independent Detector||other controllera|
|Resolutory Action||none taken : unable|
|Air Traffic Incident||other|
This is a copy of a ucr that was filed on jun/xx/95. On jun/sun/95, I observed the ASOS reporting the visibility as 1/4 mi. This continued for at least 2 hours. All this time the RVR for all runways were reporting visibility better than 6000 ft (their limit). This is just another of the continuing erroneous WX information we receive from this piece of equipment. It is time for it to go. Numerous pilots questioned this same thing, asking how we could be consistently calling the visibility 1/4 mi with high RVR's. On jun/sat/95, a tornado was sighted 6 mi north of the airport. Never was it reported on the ASOS observation. This is a serious threat to air safety.
Original NASA ASRS Text
Title: CTLR RPT REGARDING POOR WX INFO FROM ASOS.
Narrative: THIS IS A COPY OF A UCR THAT WAS FILED ON JUN/XX/95. ON JUN/SUN/95, I OBSERVED THE ASOS RPTING THE VISIBILITY AS 1/4 MI. THIS CONTINUED FOR AT LEAST 2 HRS. ALL THIS TIME THE RVR FOR ALL RWYS WERE RPTING VISIBILITY BETTER THAN 6000 FT (THEIR LIMIT). THIS IS JUST ANOTHER OF THE CONTINUING ERRONEOUS WX INFO WE RECEIVE FROM THIS PIECE OF EQUIP. IT IS TIME FOR IT TO GO. NUMEROUS PLTS QUESTIONED THIS SAME THING, ASKING HOW WE COULD BE CONSISTENTLY CALLING THE VISIBILITY 1/4 MI WITH HIGH RVR'S. ON JUN/SAT/95, A TORNADO WAS SIGHTED 6 MI N OF THE ARPT. NEVER WAS IT RPTED ON THE ASOS OBSERVATION. THIS IS A SERIOUS THREAT TO AIR SAFETY.
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.