As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPTAIN'S AND FIRST OFFICER'S LEFT BRAKE PEDALS WERE EXTREMELY SPONGY AND WENT TO FLOOR WITH VERY LITTLE TO NO BRAKING ABILITY. MAINTENANCE BLED THE LT BRAKE SYSTEM IAW MM 32-40-05. FLUSHED WITH 2 QUARTS OF 5606. TAXIED AIRCRAFT AND VERIFIED OPERATION. OPS CHECK GOOD.