As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ACCOMPLISHMENT OF AMDS WORK CARD THE AFT LEFT FLIGHT ATTENDANT OXYGEN MASK FAILED TO OPEN DURING STEP 1. CORRECTIVE ACTION: DOOR WAS RUBBING ON TRIM. ADJUSTED BOX, PER A319 AMM 35-21. OPERATIONS CK GOOD ASSOCIATED AA 2527-01041.