As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NO LT BRAKE PSI WHEN BRAKE PEDAL APPLIED. LT BRAKE PEDAL GOES ALL THE WAY TO STOP. RT BRAKE WORKS NORMAL. FOUND THE PILOTS LT MASTER CYLINDER LEAKING EXTERNALLY. REMOVED THE MASTER CYLINDER AND INSTALLED A INSPECTED MASTER CYLINDER REF MM 32-40-00. OPS AND LEAK CHECKED GOOD.