B737-800
Flight Crew Air Transport Pilot (ATP)
ATC Issue All Types; Inflight Event / Encounter Wake Vortex Encounter
Flight Crew Took Evasive Action; Flight Crew Requested ATC Assistance / Clarification
Environment - Non Weather Related; Procedure
Flying the IRNMN approach into LAX. Was put behind a B777. Told ATC distance was insufficient as we started to feel effects of wake turbulence. Told them we were slowing to 190 from the assigned 210. Three weeks ago encountered severe wake turbulence from B747 that turned us to a 45 degree right bank that was completely uncontrollable for 5 seconds. Swore I would never allow that to happen again.LAX is an anomaly in that the air is like a blender. Constantly disturbed. Along with that; ATC is putting us behind heavy and the distance is inadequate to avoid the effects and hazards to the safety of passengers and crew. There must be greater separation between heavies and smaller aircraft to mitigate the effects of wake turbulence and the potential hazards that it presents.
Reporter stated he was the Captain on this flight. He recommended considering different arrival routes for different aircraft wake classifications.
B737 Captain reported encountering wake turbulence on arrival into LAX in trail of a B777. He recommended that separation between light and heavy aircraft inbound to LAX be increased.