As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FIRST OFFICERS OXYGEN MASK, HARNESS LEAK TOP LT TUBE. SWAPPED FIRST OFFICERS & OBSERVERS OXYGEN MASK IAW AMM 35-11-12. OPERATIONS CHECKED GOOD. DEFERRED OBSERVERS 02 MASK IAW MEL 35-10-01. PLACARD INSTALLED, PROCEDURE COMPLIED WITH & ENTERED INTO PMR IAW MOC 96074. RETURNED OBSERVERS & FIRST OFFICERS O2 MASK TO POSITION. R & R FIRST OFFICERS O2 MASK IAW AMM 35-11-12. OPERATIONS CHECK & LEAK CHECKED GOOD AT THIS TIME. THIS CLEARS DM 002607 & PLACARD REMOVED.