As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOST B-SYSTEM HYDRAULIC PRESSURE TO 2000 PSI DURING TAXI. BRAKE PRESSURE DROPPED TO 1750 PSI. FLUID LEVEL NORMAL. REMOVED AND REPLACED NR 1 AND NR 2 HYDRAULIC B-PUMPS. NR 1 PUMP WAS BAD, CHANGED NR 2 PUMP AS PRECAUTIONARY MEASURE. LEAK AND OPERATIONAL CHECKS GOOD. NO DEFECTS NOTED. (M)