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A B757-200 captain reported encountering wake turbulence at FL320 from a preceding wide body aircraft at FL340 that resulted in significant roll and turbulence. With ATC assistance; they deviated from their track to avoid any further encounters.
| Attributes | |
| ACN | 906132 |
| Time | |
| Date | 201008 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Widebody Low Wing 3 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 325 Flight Crew Total 15600 Flight Crew Type 5500 |
| Events | |
| Anomaly | Inflight Event / Encounter Wake Vortex Encounter |
Narrative:
At FL320 we were 15 miles in trail of a [wide body aircraft] at FL340. A significant roll to the right immediately followed by moderate chop lasted approximately 10 seconds. The first officer reported it and asked for an offset upwind of 2 miles. I turned the aircraft 20 degrees right at the same time. We maintained our lateral separation with no further turbulence. Two flight attendants reported being tossed about enough to feel a bit of a twinge or pain in their backs and/or necks. They told us they did not want medical attention upon arrival. No passenger injuries reported. A tailwind of 15-20 KTS may have contributed to the downward flowing jet wash and wake turbulence staying right on the jet route.
Original NASA ASRS Text
Title: A B757-200 Captain reported encountering wake turbulence at FL320 from a preceding wide body aircraft at FL340 that resulted in significant roll and turbulence. With ATC assistance; they deviated from their track to avoid any further encounters.
Narrative: At FL320 we were 15 miles in trail of a [wide body aircraft] at FL340. A significant roll to the right immediately followed by moderate chop lasted approximately 10 seconds. The First Officer reported it and asked for an offset upwind of 2 miles. I turned the aircraft 20 degrees right at the same time. We maintained our lateral separation with no further turbulence. Two Flight Attendants reported being tossed about enough to feel a bit of a twinge or pain in their backs and/or necks. They told us they did not want medical attention upon arrival. No passenger injuries reported. A tailwind of 15-20 KTS may have contributed to the downward flowing jet wash and wake turbulence staying right on the jet route.
Data retrieved from NASA's ASRS site as of April 2012 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.