B737-700
Flight Crew Last 90 Days 130; Flight Crew Type 160
Situational Awareness; Distraction
Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance; Inflight Event / Encounter Wake Vortex Encounter
Flight Crew Returned To Clearance
Environment - Non Weather Related; Human Factors; Procedure
On approach to RWY 9R ATL. Encountered large (45 degree Angle of Bank) roll due to aircraft wake ahead. Aircraft entered CWR (Control Wheel Roll) which disengaged LNAV mode. Loss of LNAV was not noticed until late turn onto RWY 9R Localizer. Deviation corrected by Crew and ATC. Remainder of approach and landing was normal.
B737-700 Captain reported uncommanded 45 degree roll from preceding aircraft wake on approach to Runway 9R at ATL.