What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
On September 24, 2017, the pilot in command (PIC) of N72BT, an Aero Vodochody L39C, was accomplishing pattern work at Chicago Rockford international airport (krfd). During rollout on the full stop landing on rwy 19, the PIC discovered the loss of wheel brake pressure, although there was adequate hydraulic pressure in the system. The PIC attempted to recycle the brakes to regain pressure without success. The PIC then switched to the emergency brake system and regained brake pressure. The aircraft came to a stop approximately 20 feet into the overrun of the runway. The PIC was able to taxi the aircraft back to the hangar under his own power and with normal brake pressure.
As the FAA filed it
ON SEPTEMBER 24, 2017, THE PILOT IN COMMAND (PIC) OF N72BT, AN AERO VODOCHODY L39C, WAS ACCOMPLISHING PATTERN WORK AT CHICAGO ROCKFORD INTERNATIONAL AIRPORT (KRFD). DURING ROLLOUT ON THE FULL STOP LANDING ON RWY 19, THE PIC DISCOVERED THE LOSS OF WHEEL BRAKE PRESSURE, ALTHOUGH THERE WAS ADEQUATE HYDRAULIC PRESSURE IN THE SYSTEM. THE PIC ATTEMPTED TO RECYCLE THE BRAKES TO REGAIN PRESSURE WITHOUT SUCCESS. THE PIC THEN SWITCHED TO THE EMERGENCY BRAKE SYSTEM AND REGAINED BRAKE PRESSURE. THE AIRCRAFT CAME TO A STOP APPROXIMATELY 20 FEET INTO THE OVERRUN OF THE RUNWAY. THE PIC WAS ABLE TO TAXI THE AIRCRAFT BACK TO THE HANGAR UNDER HIS OWN POWER AND WITH NORMAL BRAKE PRESSURE.