As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOTH PIC ANS SIC BRAKE PEDALS GO HALF WAY TO THE FLOOR BEFORE THERE IS ANY PRESSURE. PRESSURE CHECKED BRK SYS REACHED 800 PSI. OPS CHECKED SHUTTLE VALVES, OPERATING PROPERLY. OHMS CHECKED WIRING HARNESS AT PN001 AT BRAKE CONTROL BOX AND BOTH WHEEL TRANSDUCERS PASSED CHECKS. SWAPPED BRAKE PACKS. BLED BRAKES, TAXIED AIRCRAFT AND OBSERVED NORMAL BRAKE OPERATION MM 32-42-00.