As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EICAS DISPLAYED E1 HYD PUMP FAIL AS WELL AS HYD SYS 1 FAIL. HYD FLUID QTY SHOWED IN AMBER RANGE. AOM PROCEDURES COMPLIED WITH. PRESS FLUCTUATIONS WERE OBSERVED BETWEEN 2300 - 300 PSI. R & R NR 1 ENG EDP HYD OPERATIONAL & LEAK CHECKED OK IAW AMM 29-10-03.