Narrative:

During the morning runway check; a vehicle was inspecting runway 26R. I side stepped an MD88 from runway 26R to runway 26L. There was a tug holding short of runway 26L at taxiway C. As the MD88 was rolling past taxiway C with all three wheels on the ground; the amass alerted that there was a vehicle on runway 26L; there was not. I reported the incident for the log. Since then; there have been at least nine other incidents of the amass alerting erroneously; all involving a tug holding short of runway 26L or 26R and either an arriving or departing aircraft. The amass needs to be fixed immediately.

Related reports:

Google
 

Original NASA ASRS Text

Title: ATL Controller voiced concern regarding continuing false AMASS alarms.

Narrative: During the morning runway check; a vehicle was inspecting Runway 26R. I side stepped an MD88 from Runway 26R to Runway 26L. There was a tug holding short of Runway 26L at Taxiway C. As the MD88 was rolling past Taxiway C with all three wheels on the ground; the AMASS alerted that there was a vehicle on Runway 26L; there was not. I reported the incident for the log. Since then; there have been at least nine other incidents of the AMASS alerting erroneously; all involving a tug holding short of Runway 26L or 26R and either an arriving or departing aircraft. The AMASS needs to be fixed immediately.

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.