As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN DESCENT PASSING FL370 CREW DETECTED AN ELECTRICAL BURNING ODOR IN THE COCKPIT WHICH QUICKLY DISSIPATED. [SUP 05-18-07] ACCOMPLISHED INSPECTION BEHIND COCKPIT CB PANELS AND E & E COMP. CREW COMMENT ODOR DISSIPATED BY TURNING OFF RIGHT RECIRCULATION FAN. INSPECTED WIRING FOR RT RECIRC FAN. NO DISCREPANCY FOUND. CAUSE OF ODOR NOT ESTABLISHED. REPLACED RT RECIRC FAN.