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B737-900 captain reported encountering wake turbulence at FL350 7 miles in trail of a B757. Reporter stated they were not advised of possible wake.
| Attributes | |
| ACN | 1649731 |
| Time | |
| Date | 201905 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZTL.ARTCC |
| State Reference | GA |
| Aircraft 1 | |
| Make Model Name | B737-900 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine |
| Events | |
| Anomaly | ATC Issue All Types Inflight Event / Encounter Wake Vortex Encounter |
Narrative:
Wake turbulence encounter at FL350 7 miles in trail of boeing 757 at same altitude that resulted in roll up to 15 degrees to left and autopilot disengagement and roll authority; roll authority announcement. We were behind [the B757] on the GLAVN2 arrival to atl with a direct 30 kt tailwind. We were not informed of type of aircraft we were following and had no reason to suspect wake turbulence would be an issue. We recovered from unexpected roll by rolling wings level and increased in trail separation; followed by descent clearance to clear the 757 wake. No injuries or complaints from passengers or cabin crew. We were not made aware of type aircraft we were following; but asked immediately after the event. Advise 737 aircraft when they are in trail of 757.
Original NASA ASRS Text
Title: B737-900 Captain reported encountering wake turbulence at FL350 7 miles in trail of a B757. Reporter stated they were not advised of possible wake.
Narrative: Wake turbulence encounter at FL350 7 miles in trail of Boeing 757 at same altitude that resulted in roll up to 15 degrees to left and autopilot disengagement and ROLL AUTHORITY; ROLL AUTHORITY announcement. We were behind [the B757] on the GLAVN2 arrival to ATL with a direct 30 kt tailwind. We were not informed of type of aircraft we were following and had no reason to suspect wake turbulence would be an issue. We recovered from unexpected roll by rolling wings level and increased in trail separation; followed by descent clearance to clear the 757 wake. No injuries or complaints from passengers or cabin crew. We were not made aware of type aircraft we were following; but asked immediately after the event. Advise 737 aircraft when they are in trail of 757.
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.