Narrative:

First aircraft X departed eug IFR northbound climbing to 8000 via direct cvo then V495. Second aircraft Y was VFR sbound at 7500 to mfr, route unknown. I initiated automatic handoff with ZSE for first aircraft and ZSE accepted handoff approximately 5 NM north of cvo. Soon after, second aircraft was in handoff status from ZSE to eug approximately 20 NM north of cvo. I delayed accepting handoff of second aircraft due to 'no ARTS track' indication on data display and no primary return on radar. This indication does not permit display of aircraft altitude, therefore, I did not know aircraft #2's altitude. I issued traffic (second aircraft) to first aircraft and advised, 'altitude unknown.' I found out aircraft #2's altitude verbally from ZSE. I then issued the traffic again with altitude and aircraft #1 advised, 'traffic in sight.' aircraft #2 did eventually track normally on the radar with altitude displayed. In may/93, eug's ASR-5 radar and antenna were replaced with ASR-8 and new antenna. Since this replacement, there has been an increased incidence of 'no ARTS track' on aircraft entering and leaving eug airspace. This situation continues to be a problem since the controllers are not able to utilize the full capabilities of the radar. This increases the workload of the controllers at both ZSE and eug because verbal coordination is increased in order to provide effective service to the users. In addition, the controllers at eug are taking extra measures and time to track these targets until the radar can perform this function.

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Original NASA ASRS Text

Title: RADAR SYS REPLACED WITH AN ASR-8 DOES NOT HAVE THE RADAR COVERAGE THE PREVIOUS SYS HAD.

Narrative: FIRST ACFT X DEPARTED EUG IFR NBOUND CLBING TO 8000 VIA DIRECT CVO THEN V495. SECOND ACFT Y WAS VFR SBOUND AT 7500 TO MFR, RTE UNKNOWN. I INITIATED AUTOMATIC HDOF WITH ZSE FOR FIRST ACFT AND ZSE ACCEPTED HDOF APPROX 5 NM N OF CVO. SOON AFTER, SECOND ACFT WAS IN HDOF STATUS FROM ZSE TO EUG APPROX 20 NM N OF CVO. I DELAYED ACCEPTING HDOF OF SECOND ACFT DUE TO 'NO ARTS TRACK' INDICATION ON DATA DISPLAY AND NO PRIMARY RETURN ON RADAR. THIS INDICATION DOES NOT PERMIT DISPLAY OF ACFT ALT, THEREFORE, I DID NOT KNOW ACFT #2'S ALT. I ISSUED TFC (SECOND ACFT) TO FIRST ACFT AND ADVISED, 'ALT UNKNOWN.' I FOUND OUT ACFT #2'S ALT VERBALLY FROM ZSE. I THEN ISSUED THE TFC AGAIN WITH ALT AND ACFT #1 ADVISED, 'TFC IN SIGHT.' ACFT #2 DID EVENTUALLY TRACK NORMALLY ON THE RADAR WITH ALT DISPLAYED. IN MAY/93, EUG'S ASR-5 RADAR AND ANTENNA WERE REPLACED WITH ASR-8 AND NEW ANTENNA. SINCE THIS REPLACEMENT, THERE HAS BEEN AN INCREASED INCIDENCE OF 'NO ARTS TRACK' ON ACFT ENTERING AND LEAVING EUG AIRSPACE. THIS SIT CONTINUES TO BE A PROB SINCE THE CTLRS ARE NOT ABLE TO UTILIZE THE FULL CAPABILITIES OF THE RADAR. THIS INCREASES THE WORKLOAD OF THE CTLRS AT BOTH ZSE AND EUG BECAUSE VERBAL COORD IS INCREASED IN ORDER TO PROVIDE EFFECTIVE SVC TO THE USERS. IN ADDITION, THE CTLRS AT EUG ARE TAKING EXTRA MEASURES AND TIME TO TRACK THESE TARGETS UNTIL THE RADAR CAN PERFORM THIS FUNCTION.

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.