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The ATCT low level windshear alert system (LLWAS) was deactivated by af personnel due to malfunctions. Basic runway wind equipment, including the center-field readout continued to be operational during this outage.
| Attributes | |
| ACN | 332964 |
| Time | |
| Date | 199603 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : mia |
| State Reference | FL |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : radar |
| Experience | controller non radar : 12 controller radar : 6 |
| ASRS Report | 332964 |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | none taken : unable |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | other |
| Situations | |
| Navigational Aid | Unspecified |
Narrative:
The low level windshear alert system (LLWAS) at mia has been malfunctioning for several yrs. On mar/xx/96, the system was turned off, leaving controllers and pilots with only basic wind information (direction and speed at center-field). Without the LLWAS, controllers at mia cannot warn pilots of windshear. This could cause an unsafe situation, especially with thunderstorm season rapidly approaching. The system needs to be fixed and put back on line yesterday.
Original NASA ASRS Text
Title: THE ATCT LOW LEVEL WINDSHEAR ALERT SYS (LLWAS) WAS DEACTIVATED BY AF PERSONNEL DUE TO MALFUNCTIONS. BASIC RWY WIND EQUIP, INCLUDING THE CTR-FIELD READOUT CONTINUED TO BE OPERATIONAL DURING THIS OUTAGE.
Narrative: THE LOW LEVEL WINDSHEAR ALERT SYS (LLWAS) AT MIA HAS BEEN MALFUNCTIONING FOR SEVERAL YRS. ON MAR/XX/96, THE SYS WAS TURNED OFF, LEAVING CTLRS AND PLTS WITH ONLY BASIC WIND INFO (DIRECTION AND SPD AT CTR-FIELD). WITHOUT THE LLWAS, CTLRS AT MIA CANNOT WARN PLTS OF WINDSHEAR. THIS COULD CAUSE AN UNSAFE SIT, ESPECIALLY WITH TSTM SEASON RAPIDLY APCHING. THE SYS NEEDS TO BE FIXED AND PUT BACK ON LINE YESTERDAY.
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.