What was found
ODOR IN CABIN AND COCKPIT COMING FROM THE NR 1 PACK DURING FLIGHT ON APP EASB WITH OUT APU USED. PERFORMED TSM 05-50-00-810-831-A, INSPECTED NR 1 ENGINE, NR 2 ENGINE, AND APU FOR POSSIBLE LEAKS. NO LEAKS NOTED. PERFORMED NR 1 & 2 ENGINE RUNS IAW AMM 71-00-00-810-801-A, TO ISOLATE BETWEEN NR 1 & 2 PACKS. DEFECTS NOTED, OK FOR CONTINUED OPERATION