C188 PLT HAS SINGLE BRAKE FAILURE ON LNDG; CAUSING RWY EXCURSION AND ACFT DAMAGE.

Narrative

NORMAL WHEEL LNDG; TOUCHDOWN AND DIRECTIONAL CTL WERE ESTABLISHED ON THE RWY AS EXPECTED. DURING TAIL-DOWN BRAKING; THE R BRAKE FAILED AND THE L BRAKE INITIATED A SLIGHT L DRIFT. THE AIRPLANE SLOWED AS EXPECTED BUT CONTINUED TO WXVANE (WIND FROM 160 DEGS; 8 MPH; GUST 12 MPH) RESULTING IN 5 MPH TRAVEL FOR ABOUT 25 FT AFTER EXITING THE S SIDE OF THE RWY. THE L BRAKE WAS AGAIN APPLIED TO TURN L 180 DEGS TO RETURN TO THE RWY AND INITIATED A BACK-TAXI. AS THE AIRPLANE TURNED THE TAILWHEEL DROPPED INTO A SMALL DITCH AND CAUSED THE AIRPLANE TO STOP. WHEN THE TAILWHEEL ENTERED THE DITCH; THE TAILWHEEL SPRING MOUNTING BOLTS SHEARED AND THE TAILWHEEL SPRING ROTATED. THE EMPENNAGE DROPPED TO THE GND CAUSING MINOR DAMAGE TO THE R HORIZ STABILIZER AND ELEVATOR. THE R BRAKE FAILURE WAS DUE TO A MISSING BRAKE PUCK ON THE R MAIN LNDG GEAR. THE MISSING BRAKE PUCK WAS RECOVERED FROM THE RWY AT THE APPROX 100 FT BEYOND THE POINT OF TOUCHDOWN. THE STABILIZER AND ELEVATOR HAVE BEEN REMOVED FOR EVALUATION AND REPAIR. THE TAILWHEEL ASSEMBLY; TAILWHEEL SPRING; AND MOUNTS HAVE BEEN REMOVED FOR EVALUATION AND REPAIR. BOTH THE R AND L BRAKES HAVE BEEN REMOVED FOR EVALUATION AND REPAIR.