Narrative:

On initial taxi out for first flight of the day; as the aircraft approached the runway hold short line; brakes were lightly applied while a right turn was initiated to maintain taxiway centerline. The airplane proceeded to veer left toward the back corner of taxiway near a ground vehicle access road. Throttles were reduced to idle and the brakes were released. By the time the plane began to turn back toward the right the left main tire went into the grass a few inches and the plane became stuck. It appeared that the right brake had failed. There was no damage to the airport and no major damage to the aircraft except for where the left brake came in contact with the pavement edge and there were no injuries.

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Original NASA ASRS Text

Title: A C402C Captain reported his right brake failed resulting in an excursion off the taxiway into the grass.

Narrative: On initial taxi out for first flight of the day; as the aircraft approached the runway hold short line; brakes were lightly applied while a right turn was initiated to maintain taxiway centerline. The airplane proceeded to veer left toward the back corner of taxiway near a ground vehicle access road. Throttles were reduced to idle and the brakes were released. By the time the plane began to turn back toward the right the left main tire went into the grass a few inches and the plane became stuck. It appeared that the right brake had failed. There was no damage to the airport and no major damage to the aircraft except for where the left brake came in contact with the pavement edge and there were no injuries.

Data retrieved from NASA's ASRS site as of April 2012 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.