As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PASSENGER OXYGEN MASK AT SEAT 12AB FAILED TO DROP DURING FUNCTIONAL CHECK RE-PACKED MASK AND RE-LATCHED DOOR IAW CRJ 200 AMM 35-21-05. COMPLIED WITH OPERATIONAL TEST OF THE PASSENGER OXYGEN SYSTEM 2 TIMES IAW CRJ 200 AMM 35-20-00-00-710-801. NO DEFECTS NOTED AT THIS TIME.