C188 pilot has single brake failure on landing; causing runway excursion and aircraft damage.

Attributes
ACN	799035
Time
Date	200808
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	Other
Make Model Name	Ag Wagon 188/Ag Truck/Ag Husky
Operating Under FAR Part	other : 137
Flight Phase	landing : roll
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Experience	flight time last 90 days : 150 flight time total : 6500 flight time type : 1500
ASRS Report	799035
Events
Anomaly	aircraft equipment problem : critical excursion : runway other anomaly
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	other other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Normal wheel landing; touchdown and directional control were established on the runway as expected. During tail-down braking; the right brake failed and the left brake initiated a slight left drift. The airplane slowed as expected but continued to wxvane (wind from 160 degrees; 8 mph; gust 12 mph) resulting in 5 mph travel for about 25 ft after exiting the south side of the runway. The left brake was again applied to turn left 180 degrees to return to the runway 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 ground causing minor damage to the right horizontal stabilizer and elevator. The right brake failure was due to a missing brake puck on the right main landing gear. The missing brake puck was recovered from the runway at the approximately 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 right and left brakes have been removed for evaluation and repair.

Original NASA ASRS Text

Title: 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.

Data retrieved from NASA's ASRS site as of May 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.