As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT OXYGEN MASK QUICK-RELEASE DOOR BROKEN. SWAPPED CA OXYGEN MASK STOWAGE BOX WITH OBSERVER OXYGEN MASK BOX PER A MM 35-11-15. OPS CHECK GOOD. REMOVED AND REPLACED OBSERVERS MASK STOWAGE BOX AND OXYGEN MASK IAW AMM 35-11-15 & 35-11-12. PERFORMED OPERATIONAL TEST OF THE