Narrative:

The asde-X alarmed. Looked up saw aircraft departing runway and an aircraft clearing the runway at bravo 9 stopped. Recommendation; we been having a lot of problems with our asde-X; not sure how reliable it is?

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Original NASA ASRS Text

Title: SAN Controller observed/noted an ASDE-X alarm along with an aircraft on departure role; the reporter indicated a previous landing aircraft was clearing the runway as the alarm activated.

Narrative: The ASDE-X alarmed. Looked up saw aircraft departing runway and an aircraft clearing the runway at Bravo 9 stopped. Recommendation; we been having a lot of problems with our ASDE-X; not sure how reliable it is?

Data retrieved from NASA's ASRS site as of April 2012 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.