Narrative:

We had departed rwy 18R normally behind a B777. At approximately 1;700 ft MSL we experienced moderate [to] heavy jet wake turbulence for 10-15 sec with 20+ degree bank angle changes left and right and 3-5 degree pitch changes. ATC advised the B777 was 4 miles ahead after we reported the wake encounter to them. The TRACON indicated they would file a report and suggested we file an as soon as possible report as well.the recat wake turbulence separation program combined with a light right crosswind conditions.return to standard wake turbulence separation standards for heavy aircraft.

Google
 

Original NASA ASRS Text

Title: MD-11 Captain reported wake turbulence encounter departing MEM four miles in trail of a B777.

Narrative: We had departed Rwy 18R normally behind a B777. At approximately 1;700 ft MSL we experienced moderate [to] heavy jet wake turbulence for 10-15 sec with 20+ degree bank angle changes left and right and 3-5 degree pitch changes. ATC advised the B777 was 4 miles ahead after we reported the wake encounter to them. The TRACON indicated they would file a report and suggested we file an ASAP report as well.The ReCat Wake turbulence separation program combined with a light right crosswind conditions.Return to standard wake turbulence separation standards for heavy aircraft.

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.