What was found
(AIRCRAFT NOT GROUNDED) DIRTY SOCK SMELL ASCENDING THRU FL 210. DISSIPATED ON ITS OWN WITHIN A FEW MINUTES / PERFORMED TC A32X-21-000-001 AND FOUND SOURCE OF ODOR COMING FROM THE APU. PERFORMED LEVEL II DECONTAMINATION REF TASKCARD A32X-21-000-002. REMOVED & REPLACED FCU IAW AMM 49-32-11-000-003-A & 49-32-11-400-003-A, REMOVED AND REPLACED OIL COOLING FAN IAW AMM 49-52-51-000-002-A & 49-52-51-400-002-A. OPS & LEAK CHECK GOOD. CLEANED APU COMPARTMENT IAW AMM 49-00-00-100-003-A, CLEANED AIR INTAKE IAW AMM 49-16-00-100-005-A, CLEANED APU COMPARTMENT DOORS IAW AMM 49-00-00-100-807-A. PERFORMED BLEED DUCT DECON IAW AMM 36-12-00-615-807-A. PERFORMED AMM 21-00-00-615-802-A TO VERIFY NO ODOR IN CABIN.