What was found
FLT#839, JFK-BQN. 'LEVEL 1 ODOR EVENT MILD PHASE FLIGHT TAKEOFF CLIMB CRUISE INTENSITY MILD DURATION TAKEOFF CLIMB CRUISE LOCATION DETECTED AFT CABIN NOTE SHUT DOWN PACK 2 AND BLEED SHUT AND ODOR DISSIPATED SOMEWHAT ODOR NOT NOTICEABLE ON DESCENT LANDING ODOR EVENT PART 2 ODOR VERY NOTICEABLE AFTER APU BLEED TUNED ON ON GROUND AFT CABIN PRIMARILY ( APU SYSTEM ); PERFORMED LEVEL A DECONTAMINATION. INSPECTED APU FOR OIL LEAKS NO LEAKS FOUND. ACCOMPLISHED ECS PACK BURN WITH APU AND ENG BLEED. IAW AMM 21-00-00615-802-A NO ODOR AT THIS TIME A/C OK FOR SERVICE. THIS CLEARS MDDR. MX 4 UPDATED. PLACARD REMOVED.'