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Crj-200 captain reported encountering wake turbulence from a preceding B757 departing dtw; and questioned the spacing.
| Attributes | |
| ACN | 1687593 |
| Time | |
| Date | 201909 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | DTW.Airport |
| State Reference | MI |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Regional Jet 200 ER/LR (CRJ200) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Takeoff |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Climb |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | ATC Issue All Types Inflight Event / Encounter Wake Vortex Encounter |
Narrative:
We were cleared to lineup and wait on [runway] 21L behind a departing 757 with landing traffic at a 4 mile final. As the 757 rotated; we were given our takeoff clearance. I told the first officer that was very close to the 757 so we needed to be prepared for potential wake turbulence. Sure enough; at 200 feet; we hit moderate wake turbulence. Thankfully it wasn't too strong as 200 feet does not really give us too much room to work with if an unusual attitude recovery would be required. We mentioned to the controller that we had a good amount of wake turbulence as he handed us off (he said sorry). I'm not sure exactly what the ATC rules are but I thought I remember hearing 5 mile spacing behind a 757; either way it would be nice to have more than just the runway length of spacing. Looking back I should have just declined the lineup and wait knowing there was traffic on a 4 mile final with a 757 going out in front of us. I didn't do it because I didn't want to mess up there flow/traffic lineup that they had; so I felt pressured to take it as given. Overall the situation was manageable but I could see how it could have gone a lot worse. ATC did not give us enough spacing behind the 757 and rushed us to get out. Strict separation requirements after bigger aircraft departures.
Original NASA ASRS Text
Title: CRJ-200 Captain reported encountering wake turbulence from a preceding B757 departing DTW; and questioned the spacing.
Narrative: We were cleared to lineup and wait on [Runway] 21L behind a departing 757 with landing traffic at a 4 mile final. As the 757 rotated; we were given our takeoff clearance. I told the First Officer that was very close to the 757 so we needed to be prepared for potential wake turbulence. Sure enough; at 200 feet; we hit moderate wake turbulence. Thankfully it wasn't too strong as 200 feet does not really give us too much room to work with if an unusual attitude recovery would be required. We mentioned to the Controller that we had a good amount of wake turbulence as he handed us off (he said sorry). I'm not sure exactly what the ATC rules are but I thought I remember hearing 5 mile spacing behind a 757; either way it would be nice to have more than just the runway length of spacing. Looking back I should have just declined the lineup and wait knowing there was traffic on a 4 mile final with a 757 going out in front of us. I didn't do it because I didn't want to mess up there flow/traffic lineup that they had; so I felt pressured to take it as given. Overall the situation was manageable but I could see how it could have gone a lot worse. ATC did not give us enough spacing behind the 757 and rushed us to get out. Strict separation requirements after bigger aircraft departures.
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.