As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIV TO OKC DUE TO CREW OXYGEN SLOWLY DECREASING AND DOWN TO 240 PSI. MTC FOUND OBS SEAT O2 MASK IN EMERGENCY, REPLACED OBS O2 STORAGE BOX. FOUND F/O O2 MASK LEAKING AT STORAGE BOX, REPLACED MASK AND STORAGE BOX. REPLACED O2 BOTTLE LEAK CHECKS GOOD.