Narrative:

At 500 ft on visual approach to [runway] 22L at bos received a windshear warning in completely calm and smooth air. Accomplished go-around and didn't get warning on exact same approach in exact same conditions.

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Original NASA ASRS Text

Title: A B737-700 on final approach to Runway 22L at BOS received a windshear alert on a clear; calm day. After executing a MAP the same approach was flown without incident.

Narrative: At 500 FT on visual approach to [Runway] 22L at BOS received a windshear warning in completely calm and smooth air. Accomplished go-around and didn't get warning on exact same approach in exact same conditions.

Data retrieved from NASA's ASRS site 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.