As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT # 1909, PAP-FLL. INTERMITTENT ODOR LIKE A BURNT WIRE/HOT METAL IN THE FLIGHT DECK. NOT REAL STRONG. COMING THRU AIR VENT. ONLY IN FLIGHT DECK AND VERY TRANSIENT ; FOUND FAULT ELECTRICAL ODOR IN COCKPIT AREA WHILE TROUBLESHOOTING WITH PACK 1 ON/OFF AND CABIN FANS BLOWER/EXTRACT FANS. FURTHER TROUBLESHOOTING REQUIRED TSM 05-50-00-810-831-A.