As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A/C SMELLED OF ELECTRICAL BURNING. CK E&E COMPT FWD EQUIP COMPT AFT ACCY APU COMPT CARGO COMPTS COCKPIT & CABIN AREAS NO OBVIOUS DEFECT NOTED OR FOUND. SOURCE OF SMELL COULD NOT BE LOCATED. CHECKED ACFT AGAIN AFTER 2 HRS ON GRD UNABLE TO DUPLICATE ANY ELECTRICAL SMELL, CONSIDERED SERVICEABLE.