PA-31 pilot reported their aircraft made excursion from taxiway due to brake malfunction.

Attributes
ACN	1566246
Time
Date	201808
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	PA-31T Cheyenne II
Operating Under FAR Part	Part 91
Flight Phase	Taxi
Person 1
Function	Single Pilot Pilot Flying
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Private
Experience	Flight Crew Last 90 Days 20 Flight Crew Total 2200 Flight Crew Type 250
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Ground Event / Encounter Ground Strike - Aircraft Ground Event / Encounter Loss Of Aircraft Control Ground Excursion Taxiway

Narrative:

Right main brake or other issue caused aircraft to veer off the right side of the taxiway and into soft; wet terrain resulting in prop strikes.

Original NASA ASRS Text

Title: PA-31 Pilot reported their aircraft made excursion from taxiway due to brake malfunction.

Narrative: Right main brake or other issue caused aircraft to veer off the right side of the taxiway and into soft; wet terrain resulting in prop strikes.

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.