As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6568 - IAD-SCE - DURING CLIMB, AIRCRAFT MADE AN UNSCHEDULED LANDING DUE TO CREW HEAD LOUD BANG AND WOULD NOT HOLD PRESSURE. MAINTENANCE INSPECTED AND REMOVED AND REPLACED ACM DUCT AND RESECURED TO FLANGE, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)