|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1801 To 2400|
|Locale Reference||atc facility : sna|
|Affiliation||government : faa|
|Function||controller : approach|
|Qualification||controller : radar|
|Experience||controller military : 3|
controller radar : 12
|Anomaly||other anomaly other|
|Independent Detector||other controllera|
|Resolutory Action||none taken : detected after the fact|
|Primary Problem||Navigational Facility|
|Air Traffic Incident||other|
|ATC Facility||other physical facility|
I was working pacific handoff position at XX45Z in the coast area -- southern california TRACON. We had a scatter and lost radar data for 3-5 seconds and lost our ATIS system for about 5 mins. Our freeze patch didn't work and we were left with no information on the scope. We had to manually start tracks and observe our traffic on radar scopes in different work areas. As far as I know this only affected the coast area at southern california TRACON. Shortly after we lost our ARTS, sna tower called and said they lost theirs and it didn't come back. Callback conversation with reporter revealed the following information: reporter claimed that according to an ARTS specialist, the freeze patch was designed not to work because of the type of scatter that occurred. Reporter did not know what caused the ARTS scatter.
Original NASA ASRS Text
Title: RPTED LOSS OF THE ARTS SYS FOR ABOUT 5 MINS REQUIRING MANUAL TRACK START PROCS BY THE CTLRS.
Narrative: I WAS WORKING PACIFIC HDOF POS AT XX45Z IN THE COAST AREA -- SOUTHERN CALIFORNIA TRACON. WE HAD A SCATTER AND LOST RADAR DATA FOR 3-5 SECONDS AND LOST OUR ATIS SYS FOR ABOUT 5 MINS. OUR FREEZE PATCH DIDN'T WORK AND WE WERE LEFT WITH NO INFO ON THE SCOPE. WE HAD TO MANUALLY START TRACKS AND OBSERVE OUR TFC ON RADAR SCOPES IN DIFFERENT WORK AREAS. AS FAR AS I KNOW THIS ONLY AFFECTED THE COAST AREA AT SOUTHERN CALIFORNIA TRACON. SHORTLY AFTER WE LOST OUR ARTS, SNA TWR CALLED AND SAID THEY LOST THEIRS AND IT DIDN'T COME BACK. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR CLAIMED THAT ACCORDING TO AN ARTS SPECIALIST, THE FREEZE PATCH WAS DESIGNED NOT TO WORK BECAUSE OF THE TYPE OF SCATTER THAT OCCURRED. RPTR DID NOT KNOW WHAT CAUSED THE ARTS SCATTER.
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.