Narrative:

We were on a visual approach to mem 36L behind a B777 approximately 4 miles in trail. While on the glideslope to 36L between 1;000 to 1;500 ft we [encountered] the wake of the preceding B777. Our aircraft banked approximately 15 degrees right; then left; followed by a tail windshear warning then a head windshear warning. We executed a go-around followed by a normal landing. I am certain the windshear was the result of the significant wake turbulence from the B777.

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Original NASA ASRS Text

Title: Widebody Captain reported wake vortex encounter in trail of a B777 on approach to MEM.

Narrative: We were on a visual approach to MEM 36L behind a B777 approximately 4 miles in trail. While on the glideslope to 36L between 1;000 to 1;500 FT we [encountered] the wake of the preceding B777. Our Aircraft banked approximately 15 degrees right; then left; followed by a tail windshear warning then a head windshear warning. We executed a go-around followed by a normal landing. I am certain the windshear was the result of the significant wake turbulence from the B777.

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.