As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FIRST OFFICER`S OXYGEN MASK DOES NOT TEST CORRECTLY WITH PRESS TO TEST BUTTON. REPLACED MASK & STOWAGE BOX IAW MM 35-12-41-000-001A AND MM 35-12-41-400-001-A AND REPLACED FULL FACE QUICK DONNING O2 MASK IAW MM 35-12-41- 400-002-A. LEAK AND OPS CHECKED GOOD.