What was found
AIRCRAFT GROUNDED. APU TAILPIPE FIRE. REMOTE SHUTDOWN & APU FIRE BOTTLE DISCHARGED. USED DRY CHEMICAL EXTINGUISHER ON EXTERNAL PORTION OF TAILPIPE. PERFORMED APU FIRE INSP PER AMM 49-11-00. ALL DAMAGE INTERNAL TO APU - TURBINE DAMAGED. EXTERNAL DAMAGE INSP C/W IAW 05-51-95 - NO EXTERNAL DAMAGE NOTED. CLEANED EXTERNAL AREA PER AMM 49-11-00. APU DEFERRED IAW MEL 49-11-01 . CAT C. DD 08JUN19. MDDR 112361. MTC PROCEDURES C/W. PLACARDS INSTALLED.