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B737 flight crew reported encountering wake turbulence in trail of another B737 at FL355 while climbing to FL360.
| Attributes | |
| ACN | 1474368 |
| Time | |
| Date | 201708 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZID.ARTCC |
| State Reference | IN |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | B737 Next Generation Undifferentiated |
| 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) |
| Person 2 | |
| Function | Pilot Not Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Inflight Event / Encounter Wake Vortex Encounter |
Narrative:
This event was wake turbulence related. We were given a climb to FL360 by ATC (don't recall if ZDC or ZID center) following in trail (approximately 9 miles) of another aircraft at FL360. Our optimum altitude was FL360; assigned speed of .75 mach for spacing and autopilot engaged. At approximately FL355 we encountered wake turbulence which rolled our aircraft left; at which point the autopilot disengaged. The aircraft rolled to approximately 35-40 degrees angle of bank; at which point I was able to manually take control and returned to straight and level flight. We did get the aural 'bank angle' call out. I continued the climb to FL360 without any further incident. We reported the wake turbulence incident to ATC.although the spacing looked good and winds negligible; perhaps we were too close to the aircraft ahead. I'll pay more attention to the aircraft in my vicinity.
Original NASA ASRS Text
Title: B737 flight crew reported encountering wake turbulence in trail of another B737 at FL355 while climbing to FL360.
Narrative: This event was wake turbulence related. We were given a climb to FL360 by ATC (don't recall if ZDC or ZID Center) following in trail (approximately 9 miles) of another aircraft at FL360. Our optimum altitude was FL360; assigned speed of .75 Mach for spacing and autopilot engaged. At approximately FL355 we encountered wake turbulence which rolled our aircraft left; at which point the autopilot disengaged. The aircraft rolled to approximately 35-40 degrees angle of bank; at which point I was able to manually take control and returned to straight and level flight. We did get the aural 'bank angle' call out. I continued the climb to FL360 without any further incident. We reported the wake turbulence incident to ATC.Although the spacing looked good and winds negligible; perhaps we were too close to the aircraft ahead. I'll pay more attention to the aircraft in my vicinity.
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.