What was found
AIRCRAFT WAS GROUNDED: FLIGHT AIR RETURNED TO CLT ON ACCOUNT OF CREW REPORTED FUMES IN THE CABIN. EMERGENCY WAS DECLARED. MAINTENANCE ACCOMPLISHED JOBCARDS 33L00021001, 33L00071001, 33L00021002, AND TSM 71-00-81-810-805A. SUSPECT TO HAVE OIL CONTAMINATION FROM THE FRONT BEARING HOUSING WEEP HOLE. ALSO ACCOMPLISHED STEPS 1 THRU 8 IAW EA 299180B. ACCOMPLISHED BORESCOPE INSPECTION OF THE APU AND FOUND INTERNAL DAMAGE TO THE APU, AN APU CHANGE HAS BEEN DECLARED. MAINTENANCE REPLACED APU PER JOB CARD 33L31549001.