What was found
FLIGHT 103, CLT-MSY, RUBBER ODOR FROM ROW 6 AFTER, NEVER DISSIPATED FOR ENTIRE FLIGHT. MAINTENANCE CREW RAN SYSTEM ON APU AND ENGINES, ISOLATED PROBLEM TO RIGHT PACK. RELEASED PER MEL. RAN BOTH PACKS, AND COULDN'T DUPLICATE BURNING ODOR. CABIN DOES HAVE A NEW INTERIOR ODOR. REMOVED MEL 21-5201A.