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Reporter flying super 80 10 mi in trail at FL330 encountered wake lasting about 10 seconds rolling the aircraft to 20 degree bank.
| Attributes | |
| ACN | 280652 |
| Time | |
| Date | 199408 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : tqa airport : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 33000 msl bound upper : 33000 |
| Aircraft 1 | |
| Controlling Facilities | artcc : zfw |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Route In Use | enroute airway : zfw |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 280652 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | inflight encounter other other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : regained aircraft control flight crew : exited adverse environment |
| Consequence | Other |
| Miss Distance | horizontal : 60000 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
Narrative:
En route to dfw, in the vicinity of tuscola we encountered the possible wake turbulence of B757 aircraft at FL330. We were smooth air at the time of the encounter. The possible wake was exceptionally strong, rolling our aircraft into a 20 degree bank, and disengaging the autoplt. It lasted about 10 seconds at which point we returned to smooth air. The controller was a little busy, however we were able to learn that a B757 was 10 mi ahead along our route at FL330. I also believe that he may have been speed restr to 250 KTS. I have never experienced a wake this strong at such a high altitude.
Original NASA ASRS Text
Title: RPTR FLYING SUPER 80 10 MI IN TRAIL AT FL330 ENCOUNTERED WAKE LASTING ABOUT 10 SECONDS ROLLING THE ACFT TO 20 DEG BANK.
Narrative: ENRTE TO DFW, IN THE VICINITY OF TUSCOLA WE ENCOUNTERED THE POSSIBLE WAKE TURB OF B757 ACFT AT FL330. WE WERE SMOOTH AIR AT THE TIME OF THE ENCOUNTER. THE POSSIBLE WAKE WAS EXCEPTIONALLY STRONG, ROLLING OUR ACFT INTO A 20 DEG BANK, AND DISENGAGING THE AUTOPLT. IT LASTED ABOUT 10 SECONDS AT WHICH POINT WE RETURNED TO SMOOTH AIR. THE CTLR WAS A LITTLE BUSY, HOWEVER WE WERE ABLE TO LEARN THAT A B757 WAS 10 MI AHEAD ALONG OUR RTE AT FL330. I ALSO BELIEVE THAT HE MAY HAVE BEEN SPD RESTR TO 250 KTS. I HAVE NEVER EXPERIENCED A WAKE THIS STRONG AT SUCH A HIGH ALT.
Data retrieved from NASA's ASRS site as of July 2007 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.