As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 7826 - MDT-ORD - ON CLIMBOUT OF MDT AT ABOUT 12,000 FEET, E1 HYD PUMP FAIL ADVISORY MESSAGE APPEARED ON EICAS. CHECKED HYDRAULIC PAGE ON MFD AND NOTICED QUANTITY DROPPING. TURNED OFF ELECTRIC PUMP PER QRH AND HYD 1 LOW QTY ADVISORY MESSAGE APPEARED ON EICAS. RAN QRH, SLOWED TO 250 KTS. NOSE GEAR OPENED AS EXPLAINED IN QRH. DECLARED EMERGENCY. MAINTENANCE REMOVED AND REPLACED THE ENGINE HYDRAULIC LINE.