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Reporter claims at times there is loss of (target) updates for flts over or near a radar site, the higher the altitude the longer the loss.
| Attributes | |
| ACN | 348662 |
| Time | |
| Date | 199610 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : cty |
| State Reference | FL |
| Altitude | msl bound lower : 31000 msl bound upper : 35000 |
| Aircraft 1 | |
| Controlling Facilities | artcc : zjx |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller military : 4 controller radar : 15 |
| ASRS Report | 348662 |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | none taken : unable |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Navigational Facility |
| Air Traffic Incident | other |
| Situations | |
| Navigational Aid | Unspecified |
Narrative:
There is some kind of problem with the cross city radar. Cross city (cty) radar is located near cty VORTAC. This is a very busy traffic area. Flts that overfly or fly near cty are sometimes lost for several updates and even begin to coast track. Again this is a very busy traffic area. J91 serves as one of the main northbound flows out of florida. J89 serves as a major sbound flow. Also, aircraft passing near cty nebound on direct routings are sometimes lost. I haven't really pinned down any certain altitude at which this occurs, but I have seen acrs lost radar at FL310 and FL350. It appears that the higher the aircraft is, the longer the aircraft is lost. We were briefed that a new radar site was installed near cty to help with radar coverage in low altitude. I was told that this radar is called cya (?). Anyway, it has caused some problems at the higher altitudes.
Original NASA ASRS Text
Title: RPTR CLAIMS AT TIMES THERE IS LOSS OF (TARGET) UPDATES FOR FLTS OVER OR NEAR A RADAR SITE, THE HIGHER THE ALT THE LONGER THE LOSS.
Narrative: THERE IS SOME KIND OF PROB WITH THE CROSS CITY RADAR. CROSS CITY (CTY) RADAR IS LOCATED NEAR CTY VORTAC. THIS IS A VERY BUSY TFC AREA. FLTS THAT OVERFLY OR FLY NEAR CTY ARE SOMETIMES LOST FOR SEVERAL UPDATES AND EVEN BEGIN TO COAST TRACK. AGAIN THIS IS A VERY BUSY TFC AREA. J91 SERVES AS ONE OF THE MAIN NBOUND FLOWS OUT OF FLORIDA. J89 SERVES AS A MAJOR SBOUND FLOW. ALSO, ACFT PASSING NEAR CTY NEBOUND ON DIRECT ROUTINGS ARE SOMETIMES LOST. I HAVEN'T REALLY PINNED DOWN ANY CERTAIN ALT AT WHICH THIS OCCURS, BUT I HAVE SEEN ACRS LOST RADAR AT FL310 AND FL350. IT APPEARS THAT THE HIGHER THE ACFT IS, THE LONGER THE ACFT IS LOST. WE WERE BRIEFED THAT A NEW RADAR SITE WAS INSTALLED NEAR CTY TO HELP WITH RADAR COVERAGE IN LOW ALT. I WAS TOLD THAT THIS RADAR IS CALLED CYA (?). ANYWAY, IT HAS CAUSED SOME PROBS AT THE HIGHER ALTS.
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.