As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT DIVERTED TO CLT DUE TO ENGINE NUMBER 1 OIL QUANTITY DROPS FROM 14 QTS AT ENGINE START TO 2.0 QT IN FLIGHT. CREW REPORTED THEY DID NOT GET ECAM WARNING. THE AIRCRAFT LANDED SAFELY AT CLT WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND B SUMP SCAVENGE TUBE UNION 454K1 LEAKING ON THE LEFT HAND SIDE OF #1 ENGINE. MAINTENANCE SECURED UNION PER ESM 72-00-00-H1A 710A-C AND ACCOMPLISHED A SATISFACTORY LEAK CHECK.