As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHL - FLT 514 - DCA-PHL - EN ROUTE, THE CREW DETECTED AN ODD ODOR THROUGHOUT THE CABIN, AND FAINTLY IN THE COCKPIT. FLIGHT LANDED WITHOUT FURTHER INCIDENT IN PHL. MAINTENANCE REPLACED THE AVIONICS BLOWER FAN. OPERATIONALLY CHECKS OK. (M)