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B737-700 flight crew reported encountering wake turbulence in trail of a B747 at FL320 that resulted in a possible flight attendant injury.
| Attributes | |
| ACN | 1547146 |
| Time | |
| Date | 201805 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | SLIDR |
| State Reference | NM |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B737-700 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent Cruise |
| Route In Use | STAR EAGUL SIX |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | B747 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 150 Flight Crew Type 8000 |
| Person 2 | |
| Function | Pilot Flying First Officer |
| Qualification | Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument |
| Experience | Flight Crew Last 90 Days 290 Flight Crew Type 3510 |
| Events | |
| Anomaly | Deviation - Altitude Excursion From Assigned Altitude Inflight Event / Encounter Loss Of Aircraft Control Inflight Event / Encounter Wake Vortex Encounter |
Narrative:
[We were] in smooth air with the seatbelt sign on; near slidr intersection; at FL320; assigned 280 knots. We unexpectedly rolled right past 30 degrees [and] the autopilot disengaged. We disengaged autothrottles and smoothly applied left aileron to stop the roll and recover. We queried ATC as to what type of aircraft we were following. They replied 'B747'. We immediately asked for off course vector for spacing to avoid further wake turbulence. When we recovered fully; we asked flight attendants if they were okay; and they replied that the passengers were all seated; but flight attendants were up and tossed around in aft galley but no injuries. We landed uneventfully. I called dispatch and [maintenance] control. I wrote up the aircraft for severe turbulence inspection. At new gate; the a flight attendant advised getting pulled off trip to get checked out.
Original NASA ASRS Text
Title: B737-700 flight crew reported encountering wake turbulence in trail of a B747 at FL320 that resulted in a possible flight attendant injury.
Narrative: [We were] in smooth air with the seatbelt sign on; near SLIDR intersection; at FL320; assigned 280 knots. We unexpectedly rolled right past 30 degrees [and] the autopilot disengaged. We disengaged autothrottles and smoothly applied left aileron to stop the roll and recover. We queried ATC as to what type of aircraft we were following. They replied 'B747'. We immediately asked for off course vector for spacing to avoid further wake turbulence. When we recovered fully; we asked Flight Attendants if they were okay; and they replied that the passengers were all seated; but Flight Attendants were up and tossed around in aft galley but no injuries. We landed uneventfully. I called Dispatch and [Maintenance] Control. I wrote up the aircraft for severe turbulence inspection. At new gate; the A Flight Attendant advised getting pulled off trip to get checked out.
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.