What was found
WHEN SWITCHING TO APU BLEED AFTER ENGINE SHUTDOWN WE SMELLED STRONG FUEL SMELL. PERFORMED GVI OF APU COMP/T, FOUND FUEL INGESTED IN PLENUM AND WICKING OUT OF ACCESS DOORS. FOUND NO BAD FUEL LINES/LEAKS ON APU ASSY. SUSPECT BAD BAD DRAIN ASSY BELLOWS ON APU PLENUM DOOR ASSY. DEBRIEFED CREW FUEL ODOR IN COCKPIT ONLY/APU BLEED ON. CROSSBLEED OFF. PACK BOTH ON AND BOTH ENG OFF. PERFORMED PACK ECS BURNOUT PER TC 2100-2005. AFT BULKHEAD PANELS OF FWD CARGO PIT REQ INSTALLATION WIP BF545168. INSTALLED FWD CARGO AFT BULKHEAD PANELS WIP 724033. WORK CARDS 0550-2002, 4900-2001, & 2100-2005 ALL COMPLETED. (LP: 5846265)