What was found
FIRST OFFICER REPORTED, COULD NOT EXHALE TESTING OXYGEN MASK. INSTALLED NEW FIRST OFFICERS CREW OXYGEN FULL FACE MASK IAW AMM 35-11-12. OPERATIONS & LEAK CHECKED GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FIRST OFFICER REPORTED, COULD NOT EXHALE TESTING OXYGEN MASK. INSTALLED NEW FIRST OFFICERS CREW OXYGEN FULL FACE MASK IAW AMM 35-11-12. OPERATIONS & LEAK CHECKED GOOD.