As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OBSERVERS O2 MASK LEAK DETECTED. ONE OF THE HOSES SHOW BREAKAGE/DAMAGE DEFFERING OBSERVERS OXYGEN SYSTEM IAW MEL 35-10-1. REMOVED AND REPLACED OBSERVERS SEAT O2 MASK IAW AMM 35-11-12. LEAK TEST GOOD IAW AMM 35-10-00. NO LEAKS DETECTED.