What was found
FLT#773, BOS-AUA. 'FUME EVENT DESCENDING THROUGH 10,000 FT ROWS 27/28 EXPERIENCED A CHEMICAL OR SHARPIE SMELL THIS PROCEEDED TO APPROX ROW 12 AT APPROXIMATELY 4000 FT TH EODOR HAD MOSTLY DISSIPATED AND HAD CHANGED IN NATURE TO A SWEET MUSTY SMELL IT BECAME FAINTER AND FAINTER UNTIL LANDING; ACCOMPLISHED INFO NOTICE 2017-T015J SECTION B1. DECONTAMINATION LEVEL A WAS ACCOMPLISHED PER AMM 21-00-00-615-802-A. NO LEAKS OR ODORS WERE NOTED. A/C OK FOR SERVICE.'