As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 6384 - ROC-IAD - DURING CRUISE, THE FLIGHT CREW STATED THAT THEY DETECTED AND ELECTRICAL BURNING SMELL IN THE COCKPIT. AIRCRAFT LANDED AT IAD WITH NO FURTHER INCIDENTS. MAINTENANCE REPLACED THE NR 2 RMU. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)