As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE: DONT PASS OPERATIONAL TEST EMERGENCY OXYGEN CONTAINER DROP IN PASSENGER CABIN; REF AEROMAN NR 2023-199325 WO 2023 114/1 PERFORMED TSM IAW 35-23-00-810-807A PERFORMED OPERATIONAL CHECK OF MANUAL MASK RELEASE IAW AMM 35-23-00-710-001A TEST IS OK ACCOMPLISHED BY AEROMAN TECH 8613818 RII BY QC 286.'