Stearman
Flight Crew Flight Instructor; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 10; Flight Crew Total 27622; Flight Crew Type 449
Human-Machine Interface
Ground Event / Encounter Ground Strike - Aircraft; Ground Excursion Runway; Inflight Event / Encounter Loss Of Aircraft Control
Aircraft Aircraft Damaged; Flight Crew Regained Aircraft Control
Human Factors
During rollout after a good landing and slowed almost to taxi speed the airplane started to swerve to the left from runway centerline.  I failed to make adequate and prompt enough correction with rudder/tailwheel steering input and went off runway at a 90 degree angle in a three-point attitude at an estimated groundspeed of 30 mph. The winds were light and variable.  The right lower wingtip momentarily contacted the grass surface just off the runway.  I continued around in a left turn at taxi speed and returned to runway surface and taxied in.  There was some damage to lower right wing.
A Stearman Pilot momentarily lost directional control on rollout following a normal landing and performed a ground loop; exiting and returning to the runway interrupted by brief ground contact with the lower right wingtip.