Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Flight Crew Last 90 Days 200; Flight Crew Total 6000; Flight Crew Type 1500
Deviation - Speed All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Wake Vortex Encounter
General None Reported / Taken
Environment - Non Weather Related; Procedure
On descent into CLT; while in speed mode set for 235 knots at a descent rate of 1000 ft per minute; there was an instant raise in airspeed to 251 knots for 1 second. The high speed; red chime came on. The airspeed immediately returned to normal. The aircraft was written up for inspection. Possible wake turbulence encounter. Corrected immediately. No proper amount of time to avoid and detect due to instant nature of speed increase.
EMB-145 First Officer reported a momentary flap speed limit exceedance following a possible wake turbulence encounter.