A beech C90 veered off a wet runway upon touchdown and came to rest in the grass.

Attributes
ACN	1052527
Time
Date	201212
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	King Air C90 E90
Operating Under FAR Part	Part 91
Flight Phase	Landing
Flight Plan	IFR
Component
Aircraft Component	Brake System
Person 1
Function	Captain Single Pilot
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 44 Flight Crew Total 4500 Flight Crew Type 500
Events
Anomaly	Aircraft Equipment Problem Critical Ground Event / Encounter Loss Of Aircraft Control Ground Excursion Runway

Narrative:

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.

Original NASA ASRS Text

Title: A Beech C90 veered off a wet runway upon touchdown and came to rest in the grass.

Narrative: 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.

Data retrieved from NASA's ASRS site as of July 2013 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.