As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - FLT 0003 - EN ROUTE JFK-LAX, A SMOKE SMELL IN CABIN THAT POSSIBLE SMELLED LIKE ELECTRICAL. AIRCRAFT AIR INTERRUPTED AND LANDED ORD WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED AIRCRAFT AND GROUND RAN ENGINES WITH PACKS BEING CYCLED. UNABLE TO DUPLICATE SMELL. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)