As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 2944 AFTER TAKEOFF AND GEAR RETRACTION THE CREW REPORTED, RECEIVED NR 1 HYDRAULIC SYSTEM FAIL MESSAGE ON EICAS. THE CREW DECLARED AN EMERGENCY AND RETURNED TO MAF. THE AIRCRAFT LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE NR 3 BRAKE ASSEMBLY IAW MTX W/C 32-600-14. THE OPERATIONAL BRAKE TEST WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.