As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STOP RETRACTION CABLE RUBBED HOLE IN OXYGEN FEED LINE UNDER FLOOR AND CABIN. OXYGEN SYSTEM NOT FACTORY INSTALLED. LOGBOOK SHOWS REPLACEMENT OF CABLE A FEW YEARS BACK. SUBMITTER SUGGESTS OXYGEN LINE COULD HAVE BEEN INSTALLED IMPROPERLY.