What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Upon landing on runway 30R and subsequent roll out, pilot initiated a normal brake application below 100 knots. Aircraft was slowed to approximately 31 knots when a sharp left hand dig-in was felt by pilot, with an aggressive turn to the left. Brakes were released and a subsequent aggressive left hand dig-in occurred at approximately 17 knots, with an associated aircraft turning to the left. Pilot steered aircraft between two taxi lights and continued onto the left hand gravel runway shoulder below 10 knots and came to a stop. Initial damage assessment was some scraping of the underside of left ejection fuel tank. Company maintenance later discovered the nose wheel steering (NWS) actuator leaking fluid and the steering input 1 to 1 1/2 degrees off center. The NWS actuator was replaced, the system calibrated, and a functional test was satisfactorily performed. It is unknown if the NWS actuator leak and off center input signal are a result of the incident or the cause of the incident. An inspection and functional test of the brake system was performed with no discrepancies found.
As the FAA filed it
UPON LANDING ON RUNWAY 30R AND SUBSEQUENT ROLL OUT, PILOT INITIATED A NORMAL BRAKE APPLICATION BELOW 100 KNOTS. AIRCRAFT WAS SLOWED TO APPROXIMATELY 31 KNOTS WHEN A SHARP LEFT HAND DIG-IN WAS FELT BY PILOT, WITH AN AGGRESSIVE TURN TO THE LEFT. BRAKES WERE RELEASED AND A SUBSEQUENT AGGRESSIVE LEFT HAND DIG-IN OCCURRED AT APPROXIMATELY 17 KNOTS, WITH AN ASSOCIATED AIRCRAFT TURNING TO THE LEFT. PILOT STEERED AIRCRAFT BETWEEN TWO TAXI LIGHTS AND CONTINUED ONTO THE LEFT HAND GRAVEL RUNWAY SHOULDER BELOW 10 KNOTS AND CAME TO A STOP. INITIAL DAMAGE ASSESSMENT WAS SOME SCRAPING OF THE UNDERSIDE OF LEFT EJECTION FUEL TANK. COMPANY MAINTENANCE LATER DISCOVERED THE NOSE WHEEL STEERING (NWS) ACTUATOR LEAKING FLUID AND THE STEERING INPUT 1 TO 1 1/2 DEGREES OFF CENTER. THE NWS ACTUATOR WAS REPLACED, THE SYSTEM CALIBRATED, AND A FUNCTIONAL TEST WAS SATISFACTORILY PERFORMED. IT IS UNKNOWN IF THE NWS ACTUATOR LEAK AND OFF CENTER INPUT SIGNAL ARE A RESULT OF THE INCIDENT OR THE CAUSE OF THE INCIDENT. AN INSPECTION AND FUNCTIONAL TEST OF THE BRAKE SYSTEM WAS PERFORMED WITH NO DISCREPANCIES FOUND.