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 RETURNED TO CLT DUE TO THE FLIGHT CREW REPORTING ON CLIMB OUT AN AIR APU BLEED LEAK APU LEAK FED BY ENGINE OCCURRED - THE ECAM CALLED FOR SHUTTING OFF ENGINE 1 BLEED AND PACK 1 - THE AIRCRAFT LANDED SAFELY AT CLT WITHOUT FURTHER INCIDENT. OPEN