As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
F/O O2 MASK HOSE CAME OFF MASK BROKE. R & R F/O'S O2 MASK IAW AMM 35-12-41 PB401, OPS AND LEAK CHECK GOOD. SWAPPED OBSERVERS O2 MASK BACK TO ORIGINAL POSITION. MOC NOTIFIED PLACARD REMOVED. R & R F/O O2 MASK IAW AMM 35-12-41. OPS CHECK GOOD. NO LEAKS NOTED.