King Air C90 E90
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 44; Flight Crew Total 4500; Flight Crew Type 500
Other / Unknown
Aircraft Equipment Problem Critical; Ground Event / Encounter Loss Of Aircraft Control; Ground Excursion Runway
Flight Crew Regained Aircraft Control
Weather; Aircraft
After a routine IFR flight and on approach I picked up the runway 5 miles out and proceeded visually. Upon touching down (runway conditions were wet) the aircraft unexpectedly veered off to the left side of the runway leaving the pavement. The aircraft entered the grass and came to a stop after a skid of approximately 200 FT. Upon coming to a stop in the grass with no apparent issues; I powered the aircraft forward and back on to the runway (while communicating with the Tower) and taxied to the FBO ramp. No runway lights were struck and there was no apparent damage to the aircraft after shut down and a visual inspection. I believe that the left brake may have been grabbing and caused the unexpected pull to the left. This may have been caused by earlier use of the parking brake: prior to the flight the parking brake was applied for approximately 15 minutes and then released.
A Beech C90 veered off a wet runway upon touchdown and came to rest in the grass.