What was found
FLT 677, JFK-JAX. NOTICED WET SOCK SMELL ON A/C. TURNED OFF PACK 1 AND SMELL WENT AWAY SMELL HAPPEN ON CLIMB OUT ( PACKS - SINGLE (SPEEDBRAKES OK) (N503-N665) ); R & R #1 DE-OILER ASSEMBLY AND PERFORMED OPS/LEAK CHECK. ALSO PERFORMED LEVEL A DECONTAMINATION OF ECS. WORK DONE IAW AMM 72-60-31 AND 21-00-00. THIS CLEARS MDDR 432043, PLACARD REMOVED, MX4 UPDATED.