 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Reporter complaint about the inaccuracy of the ASOS equipment and its inability to supply correct WX information.
| Attributes | |
| ACN | 349055 |
| Time | |
| Date | 199610 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : rdu |
| State Reference | NC |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : radar |
| Experience | controller military : 2 controller radar : 12 |
| ASRS Report | 349055 |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Weather |
| Air Traffic Incident | other |
| Situations | |
| Navigational Aid | Unspecified |
Narrative:
It is a common occurrence for the ASOS to be in error. On this date (oct/thu/96) errors involving WX conditions from IFR to VFR were involved. At approximately XA30L the ASOS reported visibility at 7 mi. The WX observer augmented visibility to 4 mi broken. (WX observers may not always be stationed here due to ASOS.) at about XB30L the ASOS reported scattered 004. There was definitely a ceiling, IFR. At about XD00L the ASOS reported broken 004 (a change from overcast 004) when the actual conditions were few 004, VFR. The ASOS is not up to the task it's been given -- responsibility for determining WX conditions relating to safe flight conditions.
Original NASA ASRS Text
Title: RPTR COMPLAINT ABOUT THE INACCURACY OF THE ASOS EQUIP AND ITS INABILITY TO SUPPLY CORRECT WX INFO.
Narrative: IT IS A COMMON OCCURRENCE FOR THE ASOS TO BE IN ERROR. ON THIS DATE (OCT/THU/96) ERRORS INVOLVING WX CONDITIONS FROM IFR TO VFR WERE INVOLVED. AT APPROX XA30L THE ASOS RPTED VISIBILITY AT 7 MI. THE WX OBSERVER AUGMENTED VISIBILITY TO 4 MI BROKEN. (WX OBSERVERS MAY NOT ALWAYS BE STATIONED HERE DUE TO ASOS.) AT ABOUT XB30L THE ASOS RPTED SCATTERED 004. THERE WAS DEFINITELY A CEILING, IFR. AT ABOUT XD00L THE ASOS RPTED BROKEN 004 (A CHANGE FROM OVCST 004) WHEN THE ACTUAL CONDITIONS WERE FEW 004, VFR. THE ASOS IS NOT UP TO THE TASK IT'S BEEN GIVEN -- RESPONSIBILITY FOR DETERMINING WX CONDITIONS RELATING TO SAFE FLT CONDITIONS.
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.