As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: SEAT ROW ROW #1EF PSU IS NOT PASSING MANUAL MASK DROP TEST. DIAGNOSE AND OPERATIONAL CHECK PSU. FOUND PASSENGER OXYGEN MASK TRIGGER MIS-WIRED AND WIRED CORRECTLY PER AMM 23-73-31 AND AMM 35-23-00-710-001. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.