As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ANC INFLIGHT T169/08AUG - CREW FOUND OXYGEN TEST BUTTON STUCK. CREW OXYGEN BOTTLE HAS LOW PRESSURE. LANDED ANC WITHOUT INCIDENT. FOUND FIRST OBSERVER MASK LEAK. REPLACED FIRST OBSERVER MASK ASSEMBLY. SYSTEM GROUND CHECKED NORMAL OPERATION.