B747 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 235; Flight Crew Total 12158; Flight Crew Type 9132
Deviation - Speed All Types; Inflight Event / Encounter Wake Vortex Encounter
General None Reported / Taken
Environment - Non Weather Related
During descent with autopilot and ATS (Automatic Throttle System) on; aircraft experienced momentary over speed due to suspected wake turbulence encounter in otherwise smooth air.
B747 Captain reported a momentary overspeed probably caused by wake turbulence encounter.