As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 798: F/A REPORTED THAT DURING CABIN ALTITUDE EVENT WHEN THE CABIN OXYGEN SYSTEM WAS MANUALLY TURNED ON SEVERAL OXYGEN MASK DID NOT DEPLOY. FOUND OXYGEN CANISTERS INTERFERING WITH DOOR DROP HINGE REPOSITIONED OXYGEN CANISTERS PERFORMED DOOR LATCH MECHANISM TEST PER TASK 35-21-00-705-076 OPS CHECKS NORMAL. ALSO REPLACED 2 O2 MASK THAT WERE FOUND TORN.