What was found
AIRCRAFT WAS GROUNDED: CABIN SMELL ON DESCENT 10000 FEET UNTIL LANDING , LIKE ANTIFREEZE. MAINTENANCE FOUND THE APU INLET PLENUM AND INTAKE SATURATED WITH OIL WITH NO SIGNS OF AN EXTERNAL LEAK. MAINTENANCE CLEANED THE APU INTAKE AND LOAD COMPRESSOR WASH AS WELL AS ACCOMPLISHING ENVIRONMENTAL SYSTEM DECONTAMINATION AND TASK CARDS 26L00021002,, 26L00021004, 26T31049006, AND 26L31049009 WITH NO FURTHER ODORS NOTED. SUPPLEMENTAL REPORT FOR AALA202205186977: MAINTENANCE ACCOMPLISHED A FOLLOW UP GENERAL VISUAL INSPECTION OF THE APU COMPARTMENT AND FOUND NO EXTERNAL LEAKS** (CLOSED)