As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
COPILOT LT BRAKE PEDAL ONLY (SPONGY) DEPRESSES ALMOST ALL THE WAY TO FLOOR. CAN BE PUMPED UP TO ACHIEVE EFFECTIVENESS BUT PRESSURE IS RAPIDLY LOST IN PEDAL FOLLOWING PUMP UP. LT PILOT SIDE IS OK. PERFORMED BRAKE BLEEDING PROCEDURES ON ALL 4 BRAKE PEDALS. PERFORMED OPS CHECK , OPS CHECK GOOD. ALL WORK WAS PERFORMED IAW MM CH. 32-42-00.