What was found
DURING CLIMB IN FLIGHT, APU OFF, ODOR IN AIRCRAFT. TURNED OFF PACK 1, AND ODOR DISSAPATED. MAINTENANCE ACCOMPLISHED CABIN ODOR JOB CARD 26L00021001 AND 26L0021002. DETERMINED APU TO BE SOURCE OF ODOR, LEAKING OIL FROM COMPRESSOR. AIRCRAFT WAS GROUNDED. ACCOMPLISHED JOB CARDS 26L00021002, 26L00021004 AND SATISFACTORY OPERATIONAL CHECK.