As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) CREW REPORTED BURNING ODOR IN FLIGHT DECK. ACFT IS NOW AOG. SOURCE OF ODOR IS UNKNOWN UNTIL FURTHER INVESTIGATION BY MAINTENANCE. NR 2 IDG REPLACED IAW 24-21-51PB401. FOUND POTABLE WATER DRAIN/OVERFLOW VALVE NOISY AND HUMMING. REPLACED ACTUATOR IAW 38-14-44PB401. ENGINE RUN CARRIED OUT, NO FAULTS.