What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) Pilot privacy data omitted was doing touch and goes in aircraft N8156D. He stated on landing the left brake failed and would not pump up, although it was working before takeoff. He got to the end of the runway and was going slow enough he said he got out of the airplane and tried to stop it. He thought he had turned the ignition switch to the off position, but it went to the right magneto instead of to the off position so the engine kept running. He said he tried to hold the airplane but could not so he let it go over the end of the runway. The aircraft rolled down a hill and came to rest upright when it contacted a fence. The propeller was damaged and the fuselage fabric covering had a hole punctured in it from the fence post. During the investigation the left brake master cylinder center shaft that hydraulic fluid coming out of it and there was hydraulic fluid on the floor directly behind the left brake master cylinder. A malfunction or defect report (m or d) has been submitted on the faulty left brake master cylinder.
As the FAA filed it
(-23) PILOT ^PRIVACY DATA OMITTED^ WAS DOING TOUCH AND GOES IN AIRCRAFT N8156D. HE STATED ON LANDING THE LEFT BRAKE FAILED AND WOULD NOT PUMP UP, ALTHOUGH IT WAS WORKING BEFORE TAKEOFF. HE GOT TO THE END OF THE RUNWAY AND WAS GOING SLOW ENOUGH HE SAID HE GOT OUT OF THE AIRPLANE AND TRIED TO STOP IT. HE THOUGHT HE HAD TURNED THE IGNITION SWITCH TO THE OFF POSITION, BUT IT WENT TO THE RIGHT MAGNETO INSTEAD OF TO THE OFF POSITION SO THE ENGINE KEPT RUNNING. HE SAID HE TRIED TO HOLD THE AIRPLANE BUT COULD NOT SO HE LET IT GO OVER THE END OF THE RUNWAY. THE AIRCRAFT ROLLED DOWN A HILL AND CAME TO REST UPRIGHT WHEN IT CONTACTED A FENCE. THE PROPELLER WAS DAMAGED AND THE FUSELAGE FABRIC COVERING HAD A HOLE PUNCTURED IN IT FROM THE FENCE POST. DURING THE INVESTIGATION THE LEFT BRAKE MASTER CYLINDER CENTER SHAFT THAT HYDRAULIC FLUID COMING OUT OF IT AND THERE WAS HYDRAULIC FLUID ON THE FLOOR DIRECTLY BEHIND THE LEFT BRAKE MASTER CYLINDER. A MALFUNCTION OR DEFECT REPORT (M OR D) HAS BEEN SUBMITTED ON THE FAULTY LEFT BRAKE MASTER CYLINDER.