What was found
ODOR DETECTED. DURING FLIGHT, PACKS CREATING GYM SOCK ODOR WITH PASSENGERS COMPLAINING. MAINTENANCE OPERATED PACKS WITH APU BLEED AIR AND ENGINE BLEED AIR. DISCOVERED ODOR COMING FROM NR 1 ENGINE BLEED AIR SOURCE, ABOVE IDLE. INSPECTED NR 1 ENG AND UNABLE TO FIND OIL LEAK. FOUND BLACK SUBSTANCE PRESENT AT STAGE 3 HPC. SUSPECT VSV LUBRICANT. PERFORMED COMPRESSOR WASH OF NR 1 ENG IAW AMERICA WEST AIRLINES (AWA) TASK CARD S5M72303. ALSO, REPLACED NR 1 AND NR 2 OZONE FILTERS DUE TO CONTAMINATION FROM NR 1 ENG BLEED AIR, IAW AWA TASK CARD S2C21301. OPERATIONAL CHECKS GOOD, NO ODOR PRESENT WHEN PACKS RUNNING OFF OF NR 1 ENG BLEED AIR SOURCE.