What was found
DISCREPANCY: LP11766619-1 DURING #1 ENGINE START WITH APU BLEED AIR AN UNKNOWN ODOR ENTERED THE AIRCRAFT AND WAS IMMEDIATELY REPORTED BY THE FA'S. QRH PROCEDURES C/W, BTB. CORRECTIVE ACTION: AIRCRAFT WAS GROUNDED DUE TO EVENT, AND THEN A MAINTENANCE FERRY TO TPA WAS PERFORMED. FOUND AFT CARGO COMPARTMENT CONTAMINATED. CLEANED AND DECONTAMINATED AFT CARGO COMPARTMENT REF PEMCO NR 2388N8. FROM PEMCO NR 2388N8: AFT CARGO CLEANED AND DECONTAMINATED FLOOR PANELS AND RE-INSTALLED, CIC RE-APPLIED AS NEEDED. ALL WORK PERFORMED IAW A-320-AMM-06-41-53, AMM 51-78-00-615-001, AMM 51-78-00-916-001-A, AMM 25-55-12. FROM PEMCO NR 2388N12: REMOVED AND REPLACED WASTE TANK DRAIN VALVE FIN 3340MM, AND DRAIN VALVE FLANGE IAW A320 AMM 38-31-71-000-001A, AMM 38-31-21-400-001-A, AMM 38-31-72-000-001-A, AND AMM 38-31-72-400-001A./END/