What was found
AIRCRAFT EXPERIENCED A FIRE EVENT IN ATL, AND PASSENGER EVACUATED VIA THE AIRCRAFT DOORS AND TAIL CONE SLIDES. THE L1 AND L2 DOOR SLIDES OPERATED AS DESIGNED, AND THE TAIL CONE DEPLOYED AS DESIGNED; HOWEVER, THE TAIL CONE SLIDE DID NOT DEPLOY. MANUAL TAIL CONE SLIDE DEPLOYMENT WAS ATTEMPTED, BUT WAS ALSO UNSUCCESSFUL. THE EVENT INVESTIGATION DETERMINED THE SLIDE WAS NOT INSTALLED IN COMPLIANCE WITH MAINTENANCE INSTRUCTIONS, AND THE MIS-CONFIGURATION PREVENTED SLIDE OPERATION.