As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PACKS GAVE OFF A BURNING SMELL IN FLIGHT IN BOTH THE CABIN AND COCKPIT. (FLT 3134) CLOSED REMOVED AND REPLACED RT AND LT WATER SEPARATOR COALESCERS, IAW AMM. UPON OPERATIONAL TEST OF THE PACKS, FOUND NO SMELL PRESENT IN COCKPIT OR GALLEY. ALSO REMOVED AND REPLACED CEILING LIGHT BALLAST AT ROW 10C/D IAW AMM.