As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BRAKES ON CO-PILOT SIDE ARE SPONGY, AND WHEN TURNING OFF RUNWAY LEFT PEDAL WENT TO THE FLOOR. REPEAT WRITE-UP. REMOVED PILOT'S AND COPILOT'S LEFT AND RIGHT MASTER CYLINDERS DUE TO CYLINDERS BYPASSING AND INSTALLED OVERHAULED UNITS IN ALL LOCATIONS. BLED SYSTEM. OPS, LEAK, AND TAXI CHECKS GOOD. ALL WORK DONE IAW CHAPTER 32-42-02 OF THE 560 MM. ANTI-SKID CHECKS GOOD IAW 32-42-00 OF 560MM. PILOT'S LT REMOVED P/N: 9912050-17, SN: 0586.