What was found
AFW - SECOND OBSERVER OXYGEN MASK REGULATOR INOPERATIVE. REPLACED SECOND OBSERVER OXYGEN MASK. SYSTEM GROUND CHECKED NORMAL OPERATION.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AFW - SECOND OBSERVER OXYGEN MASK REGULATOR INOPERATIVE. REPLACED SECOND OBSERVER OXYGEN MASK. SYSTEM GROUND CHECKED NORMAL OPERATION.