As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOTH CTR HYD PRESSURE IND LIGHTS IN OVHD PANEL ILLUMINATED WITH PRESSURE APPLIED. CTR HYD PRESS READING ON EICAS NORMAL. WHEN CREW TOOK THE ACTIVE RUNWAY FOR T/O CTR PRESSURE WENT TO ZERO. REPLACED CENTER HYD PUMP C-1 PRESSURE SWITCH S10003 PER M/M. OPS CHK GOOD