B737 Undifferentiated or Other Model
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 49.17
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Loss Of Aircraft Control
Aircraft Equipment Problem Dissipated; Flight Crew FLC Overrode Automation; Flight Crew Took Evasive Action; General Flight Cancelled / Delayed; General Maintenance Action
Aircraft
At Vr; approximately 137 knots; aircraft had a pronounced right yaw lasting briefly.  There were no gusts at the time and no pilot input to the rudder.  This pronounced yaw lasted about 2 seconds and then ended with the aircraft stable afterwards. rest of climb out; level off and descent into ZZZ was uneventful regarding this issue.  Called maintenance enroute; plus submitted a report. In addition; mechanics met the aircraft in ZZZ to discuss.
On t/o roll we experienced 'hard push' to right (approx. half distance to runway edge).  winds were calm; engine indications normal; no pilot inputs.   A/T was engaged with reduced pwr.  Regained center line and continued flight with no further incidents
Pilots reported an uncommanded yaw at Vr.