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B737 flight crew reported loss of aircraft control; for approximately 15 seconds; when they encountered severe wake turbulence 10 miles in trail of a B777 on approach to lax. A flight attendant was reportedly slightly injured in the event.
| Attributes | |
| ACN | 1265929 |
| Time | |
| Date | 201505 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | LAX.Airport |
| State Reference | CA |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Route In Use | STAR SADDE6 |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | B777 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach Descent |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 137 Flight Crew Type 8000 |
| Person 2 | |
| Function | First Officer Pilot Not Flying |
| Experience | Flight Crew Last 90 Days 212 |
| Events | |
| Anomaly | Flight Deck / Cabin / Aircraft Event Illness Inflight Event / Encounter Loss Of Aircraft Control Inflight Event / Encounter Wake Vortex Encounter |
Narrative:
Descending through 11;000 feet; the aircraft rolled left then right. As the roll started left again I disconnected the autopilot and applied power. The rolling motion was uncontrollable until we climbed. [A] flight attendant was knocked to the ground and complained of a hurt neck. After notifying ATC of the event; ATC indicated that we were 10 miles in trail of a 777.preventative measures: I am not sure. We were well in trail and at an appropriate altitude for flight attendant duties.
Original NASA ASRS Text
Title: B737 flight crew reported loss of aircraft control; for approximately 15 seconds; when they encountered severe wake turbulence 10 miles in trail of a B777 on approach to LAX. A Flight Attendant was reportedly slightly injured in the event.
Narrative: Descending through 11;000 feet; the aircraft rolled left then right. As the roll started left again I disconnected the autopilot and applied power. The rolling motion was uncontrollable until we climbed. [A] Flight Attendant was knocked to the ground and complained of a hurt neck. After notifying ATC of the event; ATC indicated that we were 10 miles in trail of a 777.Preventative Measures: I am not sure. We were well in trail and at an appropriate altitude for Flight Attendant duties.
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.