Narrative:

I had moderate traffic with single runway open, 4 other aircraft on frequency with 7 other IFR inbound not on frequency. Small aircraft X missed his turnoff and had to back-taxi 100' to clear. Small aircraft X was just turning to clear the runway when small aircraft Y landed runway 28. Due to frequency congestion and workload, I was unable to give small aircraft Y a go around. There was no danger to either aircraft as small aircraft Y turned off at the first taxiway. The closest that either aircraft got was 4000'.

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Original NASA ASRS Text

Title: TWR LCL CTLR ALLOWED AN ACFT TO LAND WHILE ANOTHER ACFT WAS TAXIING ON THE ACTIVE RWY.

Narrative: I HAD MODERATE TFC WITH SINGLE RWY OPEN, 4 OTHER ACFT ON FREQ WITH 7 OTHER IFR INBND NOT ON FREQ. SMA X MISSED HIS TURNOFF AND HAD TO BACK-TAXI 100' TO CLR. SMA X WAS JUST TURNING TO CLR THE RWY WHEN SMA Y LANDED RWY 28. DUE TO FREQ CONGESTION AND WORKLOAD, I WAS UNABLE TO GIVE SMA Y A GAR. THERE WAS NO DANGER TO EITHER ACFT AS SMA Y TURNED OFF AT THE FIRST TXWY. THE CLOSEST THAT EITHER ACFT GOT WAS 4000'.

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.