As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOST (A) SYSTEM HYDRAULIC PRESSURE DURING CLIMB OUT FROM MSY. ACCOMPLISHED EMERGENCY CHECKLIST RELATING TO LOSS OF (A) SYSTEM HYDRAULICS. EMERGENCY WAS DECLARED. AIRCRAFT LANDED WITHOUT INCIDENT. REPLACED NR 3 SLAT ACTUATOR ASSEMBLY AND OPERATIONAL CHECK SYSTEM IAW MM.(K)