Narrative:

Radar ASR-9 there is still a 'hole' in the radar on aircraft that depart off of hill without an operational transponder. The aircraft was idented on the hill (hif) 157 at 4 DME and leaving 6200. This has been going on ever since we got the ASR-9. There have been numerous attempts at trying to solve the problem, none have improved the situation.

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Original NASA ASRS Text

Title: ATC EQUIP PROBLEM RADAR ASR-9 NON DETECTION OF ACFT BY TRACON RADAR.

Narrative: RADAR ASR-9 THERE IS STILL A 'HOLE' IN THE RADAR ON ACFT THAT DEPART OFF OF HILL WITHOUT AN OPERATIONAL TRANSPONDER. THE ACFT WAS IDENTED ON THE HILL (HIF) 157 AT 4 DME AND LEAVING 6200. THIS HAS BEEN GOING ON EVER SINCE WE GOT THE ASR-9. THERE HAVE BEEN NUMEROUS ATTEMPTS AT TRYING TO SOLVE THE PROBLEM, NONE HAVE IMPROVED THE SITUATION.

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.