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An ERJ145 first officer reported a wake vortex encounter on arrival to ord behind a B757 that resulted in a 60-degree bank.
| Attributes | |
| ACN | 977563 |
| Time | |
| Date | 201110 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ORD.Airport |
| State Reference | IL |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | EMB ERJ 145 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Route In Use | STAR WYNDE |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Route In Use | STAR WYNDE |
| Flight Plan | IFR |
| Person 1 | |
| Function | First Officer Pilot Flying |
| Qualification | Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 230 Flight Crew Total 6500 Flight Crew Type 1700 |
| Events | |
| Anomaly | Inflight Event / Encounter Wake Vortex Encounter |
Narrative:
On the wynde arrival into ord we saw that we were following an aircraft and that we were slowly catching them according to relative position on TCAS. When we were approximately 7-10 miles behind him; our aircraft rolled aggressively to the left. The aircraft bank angle went to 60 degrees and the autopilot disconnected. I stopped the bank and returned the aircraft to level flight and re-engaged the autopilot. When we queried ATC about the aircraft type we were following they told us a B757. We were never told this information before. In fact; the only controller to let us know was ord tower when we checked on for the visual approach. The rest of the flight was uneventful.
Original NASA ASRS Text
Title: An ERJ145 First Officer reported a wake vortex encounter on arrival to ORD behind a B757 that resulted in a 60-degree bank.
Narrative: On the WYNDE arrival into ORD we saw that we were following an aircraft and that we were slowly catching them according to relative position on TCAS. When we were approximately 7-10 miles behind him; our aircraft rolled aggressively to the left. The aircraft bank angle went to 60 degrees and the autopilot disconnected. I stopped the bank and returned the aircraft to level flight and re-engaged the autopilot. When we queried ATC about the aircraft type we were following they told us a B757. We were never told this information before. In fact; the only Controller to let us know was ORD Tower when we checked on for the visual approach. The rest of the flight was uneventful.
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.