Narrative:

Approach and touchdown were normal. During rollout; the tailwheel castered and I lost directional control despite sudden inputs. The aircraft rolled off the runway; onto the grass. A wingtip; aileron; and flap tip were damaged (left). I believe the tailwheel lock disengaged.

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Original NASA ASRS Text

Title: A T6 HAD A RUNWAY EXCURSION ON LANDING ROLL AT GEG AND DAMAGED THE AIRCRAFT; PERHAPS BECAUSE THE TAILWHEEL LOCK DISENGAGED.

Narrative: APCH AND TOUCHDOWN WERE NORMAL. DURING ROLLOUT; THE TAILWHEEL CASTERED AND I LOST DIRECTIONAL CONTROL DESPITE SUDDEN INPUTS. THE AIRCRAFT ROLLED OFF THE RWY; ONTO THE GRASS. A WINGTIP; AILERON; AND FLAP TIP WERE DAMAGED (LEFT). I BELIEVE THE TAILWHEEL LOCK DISENGAGED.

Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.