What was found
ODOR COMING FROM ROW 19 AFT. R & R THE RECIRCULATION FILTERS IAW AMM 21-21-41. PERFORMED A NORMAL ENGINE AUTOMATIC START, ENGINES 1 AND 2 IAW AMM 71-00-00. LEAK CHECKED OF DEOILER SEALS FOUND OK. NO ODORS IN ACFT. TROUBLESHOT IAW TSM 05-50-00-810-831-A AND TSM 71-00-00-810-801-A. FOUND THE NR 1 AND 2 ENGINE DE OILER SEALS LEAKING. R & R THE DEOILER SEALS IAW AMM 72-60-31 AND MATING RING IAW AMM 72-60-79. OPS AND LEAK CHECK IAW TSM 05-50-00-810-831-A.