B737-700
Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Flight Crew Last 90 Days 220; Flight Crew Type 2300
Situational Awareness
Inflight Event / Encounter Wake Vortex Encounter; Inflight Event / Encounter Loss Of Aircraft Control
Air Traffic Control Issued New Clearance; Flight Crew Took Evasive Action; Flight Crew Executed Go Around / Missed Approach; Flight Crew Requested ATC Assistance / Clarification; General Physical Injury / Incapacitation
Environment - Non Weather Related; Procedure
About eight miles in trail of a heavy B777; we experienced wake turbulence that upset the aircraft. The aircraft rolled uncommanded multiple times left and right up to 30-45 degrees. Pilot Flying disengaged the autopilot at the first uncommanded roll and hand flew the aircraft. Pilot Flying had the Pilot Monitoring cancel the IAP clearance; and we got vectors back around to [Runway] 25L for an uneventful approach and landing. After landing; the A Flight Attendant notified us the B Flight Attendant was injured due to the turbulence. We called for a Supervisor to meet us. She apparently fell and hit her head on one of the door handles in the rear of the aircraft. Flight Attendant B was able to secure herself in her seat for landing. Paramedics/medical attention was not requested by the injured Flight Attendant. We inquired of the flight attendants if medical attention was needed; they said it was not. We received a replacement Flight Attendant in LAX and the Captain spoke with the Operations' Center Chief Pilot about what happened.
[Report narrative contained no additional information.]
B737-700 flight crew reported encountering wake turbulence on arrival into LAX in trail of a B777 that resulted in multiple 30 to 45 degree rolls in both directions. A Flight Attendant sustained minor injuries in the encounter.