What was found
ODOR REPORTED IN THE FOWARD CABIN DURING DESCENT. ODOR DESCRIBED OF MUSTY, DIRTY, BURNING PLASTIC. FOUND OVERHEAD AND RIGHT SIDEWALL LIGHTING AT ROWS 4, 8, 9, 13, 14, 18, 19, 24, 25 ON HIGH SETTING UNABLE TO DIM. SUSPECT CAUSE OF FAINT ODOR FROM BALLAST. PERFORMED CIDS RESET IAW AMM 23-73-00. CHECKS GOOD. AIRCRAFT WAS GROUNDED.