As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: MAINTENANCE IDENTIFIED THAT EMERGENCY OXYGEN CONTAINER ABOVE L2 PASSENGER AND CREW DOOR REQUIRES REPLACEMENT BECAUSE IT DID NOT DEPLOY PROPERLY. (SEE AALA202208191997 FOR ASSOCIATED CABIN PRESSURIZATION LOSS EVENT) REPLACED EMERGENCY OXYGEN CONTAINER ABOVE L2 DOOR PER AMM 35-21-41. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.