Narrative:

While working LC2 when PA-28R was on the right downwind to runway 7R he did not appear on my tdw. He flew about 3 NM before his target appeared near midfield. I notified the supervisor who had a radar tech come to the tower to observe what was going on as this has been a recurring problem in our facility for quite some time.[shortly after] I had the same issue with the same aircraft. The tech requested me to have the aircraft identify which I did but nothing appeared on the tdw. I had the aircraft behind PA-28R on the same downwind identify and it was observed.

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Original NASA ASRS Text

Title: DAB Controller expressed concerns regarding the TDW operational capabilities; noting an example of one target not displaying an IDENT.

Narrative: While working LC2 when PA-28R was on the right downwind to Runway 7R he did not appear on my TDW. He flew about 3 NM before his target appeared near midfield. I notified the Supervisor who had a radar tech come to the Tower to observe what was going on as this has been a recurring problem in our facility for quite some time.[Shortly after] I had the same issue with the same aircraft. The tech requested me to have the aircraft IDENT which I did but nothing appeared on the TDW. I had the aircraft behind PA-28R on the same downwind IDENT and it was observed.

Data retrieved from NASA's ASRS site as of July 2013 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.