What was found
AIRCRAFT 3144, STRONG FUME/ ODOR SMELL NOTICED AFTER TURNING APU AIR ON. FUMES/SMELL DISSIPATED AFTER APU AIR TURNED OFF. CORRECTIVE ACTION: REMOVED INSPECTED AND REINSTALLED SLEEVE DUCTS FORWARD OF BOTH OZONE FILTERS PER A-319 AMM 21-51-41. NEEDS LEAK CHECK. NO CONTAMINATION FOUND. LP 4084578