As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOSS OF PILOT SIDE BRAKES. PILOT NOTICED IN FLIGHT THAT BRAKES HAD LOSS PRESSURE. MAINTENANCE IN DURANGO CO, INSPECTED SYSTEM AND DETERMINED THERE HAD BEEN AN AIR BUBBLE IN THE SYTEM THAT WORKED ITS WAY TO THE PILOTS MASTER CYLINDERS CAUSING LOSS OF BRAKES. THIS IS A RECURRING ISSUE WITH PIPER MERIDIANS.