What was found
AIR TURN BACK, LOST YELLOW HYD QUANTITY. ECAM YELLOW SYS LO PR. YELLOW LO PR LIGHT ON OVERHEAD FOLLOWED QRH/ECAM PROC DIVERTED BACK TO SDF.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIR TURN BACK, LOST YELLOW HYD QUANTITY. ECAM YELLOW SYS LO PR. YELLOW LO PR LIGHT ON OVERHEAD FOLLOWED QRH/ECAM PROC DIVERTED BACK TO SDF.