Flight crew reported executing a go-around after encountering wake turbulence in trail of a B777 on ...

Attributes
ACN	1233013
Time
Date	201501
Local Time Of Day	1201-1800
Place
Locale Reference	MEM.Airport
State Reference	TN
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	McDonnell Douglas Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Pilot Not Flying First Officer
Events
Anomaly	ATC Issue All Types Inflight Event / Encounter Unstabilized Approach Inflight Event / Encounter Wake Vortex Encounter Inflight Event / Encounter Weather / Turbulence

Narrative:

While on approach to runway 36L; we were following a B777 by about 6 miles. The winds on final were 180 at 14 knots while flying down final. At around 350 feet AGL; the wind shifted to something close to 210 to 220 at 23 knots. As the winds were shifting I started to notice some wake turbulence. At around 250 feet AGL; the turbulence was strong enough that I decided to go around. Our wing rock was over 5 degrees left and right. We reported the wake turbulence encounter to both tower and approach. Mem continues to operate in a north landing configuration while the winds aloft and surface winds are from the south. While the surface winds are reported as less than a 10 knot tailwind; the winds on final down to 100 feet can be in excess of our limits. In this case; the wind shifted and increased around 350 to 250 feet AGL which presented us with wake turbulence on final low to the ground.like it or not; memphis needs to land into the wind. This time of the year the winds aloft close to the ground can be a lot stronger than the surface winds which lead to these encounters.

Original NASA ASRS Text

Title: Flight crew reported executing a go-around after encountering wake turbulence in trail of a B777 on approach to MEM. Reporter stated ATC should be more aware of wind issues when deciding which approaches and runways should be used.

Narrative: While on approach to runway 36L; we were following a B777 by about 6 miles. The winds on final were 180 at 14 knots while flying down final. At around 350 feet AGL; the wind shifted to something close to 210 to 220 at 23 knots. As the winds were shifting I started to notice some wake turbulence. At around 250 feet AGL; the turbulence was strong enough that I decided to go around. Our wing rock was over 5 degrees left and right. We reported the wake turbulence encounter to both Tower and Approach. MEM continues to operate in a North landing configuration while the winds aloft and surface winds are from the south. While the surface winds are reported as less than a 10 knot tailwind; the winds on final down to 100 feet can be in excess of our limits. In this case; the wind shifted and increased around 350 to 250 feet AGL which presented us with wake turbulence on final low to the ground.Like it or not; Memphis needs to land into the wind. This time of the year the winds aloft close to the ground can be a lot stronger than the surface winds which lead to these encounters.

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.

Flight crew reported executing a go-around after encountering wake turbulence in trail of a B777 on approach to mem. Reporter stated ATC should be more aware of wind issues when deciding which approaches and runways should be used.