As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PERFORMED TRANSIT CHECK. PORTABLE CREW OXYGEN BOTTLE LOW. REQUIRES REPLACEMENT. R & R FLIGHT CREW PORTABLE OXYGEN BOTTLE OPS NORMAL IAW MM35-30-000-0-0. R/I FROM FACT PREMATURE REMOVAL/INSTALLATION. R & R FLIGHT CREW PORTABLE OXYGEN BOTTLE OPS NORMAL IAW MM35-30-000-0-0. FINAL CLOSED.