As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PASSENGER OXYGEN CONTAINER AT SEAT 12DEF FAILED TO OPEN DURING MANUAL DROP TEST. REMOVED PASSENGER OXYGEN CONTAINER AT SEAT 12DEF PER AMM 35 -21-41-000-001-A. REPLACED PASSENGER OXYGEN CONTAINER AT SEAT 12D EF PER AMM 35-21-41-400-001-A. OPS CHECK PERFORMED ON TC 1 7-3523-1-7806 SEQ 449.