The pilot of a piper P18 super cub reported a brake issue that resulted in a taxiway excursion.

Attributes
ACN	1375700
Time
Date	201607
Local Time Of Day	1801-2400
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	PA-18/19 Super Cub
Operating Under FAR Part	Part 91
Flight Phase	Taxi
Flight Plan	VFR
Component
Aircraft Component	Brake System
Person 1
Function	Pilot Flying Single Pilot
Qualification	Flight Crew Private Flight Crew Rotorcraft Flight Crew Multiengine Flight Crew Instrument
Experience	Flight Crew Last 90 Days 39 Flight Crew Total 2047 Flight Crew Type 70
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy Ground Event / Encounter Loss Of Aircraft Control Ground Excursion Runway

Narrative:

Upon landing the right brake pulled taking us off the runway into the weeds. We got the plane back on the runway & taxied to fuel dump - checking the brakes over & over. After stopping for fuel; I checked all brake lines; the calipers & pads.we started; taxied to the taxi way. We tested the brakes at least 4 full stops. After reaching the taxi way I decided to do a high speed taxi. At 25 or so mph I tested the brakes and the right brake locked up leaving skid marks on the taxi way. The plane went into the weeds continued to turn right & hit a berm. The left main gear collapsed & the left wing was bent. No injuries.

Original NASA ASRS Text

Title: The pilot of a Piper P18 Super Cub reported a brake issue that resulted in a taxiway excursion.

Narrative: Upon landing the Right Brake pulled taking us off the runway into the weeds. We got the plane back on the Runway & taxied to fuel dump - checking the brakes over & over. After stopping for fuel; I checked all brake lines; the calipers & pads.We started; taxied to the taxi way. We tested the brakes at least 4 full stops. After reaching the taxi way I decided to do a high speed taxi. At 25 or so MPH I tested the brakes and the Right brake locked up leaving skid marks on the taxi way. The plane went into the weeds continued to turn right & hit a berm. The left main gear collapsed & the left wing was bent. No injuries.

Data retrieved from NASA's ASRS site 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.