As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR TURN BACK. FLIGHT CREW REPORTED LOSS OF "A" SYSTEM HYDRAULICS. AN EMERGENCY WAS DECLARED AND AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE PERFORMED AN OVERWEIGHT INSPECTION. FOUND NO. 2 MLG TIRE LOST CAP ON TAKEOFF, DAMAGING INBD. FORE FLAP, MID FLAP AND AFT FLAP. ALSO DAMAGED HYDRAULIC LINE TO MAIN GEAR CONTROL MODULE. REPAIR IS IN PROCESS. AN ADDENDUM WILL BE ISSUED WHEN REPAIR IS ACCOMPLISHED.