What was found
FUMES DURING DESCENT, ISOLATED TO PACK 1. ATTEMPTED TO FILL OUT AIR QUALITY FORM. UNABLE DOES NOT WORK EITHER. ( PACKS A320 WITH MOD 31283/MP P7125 (FWC H2-F1 STND) AND WITH MOD. 30626/MP K6443 (ENHANCED ECS) - FAULT CAUTIONS ASSOCIATED WITH OPERATIVE SIDE NOT DISPLAYED )-REACTIVATED PACK 1 IAW AMM 21-51-00. FOUND PACK 1 FLOW CONTROL UNIT (23HB) INOP. R/R PACK 1 FLOW CONTROL UNIT (23HB) IAW AMM 21-51-51. OPS CK GOOD. PERFORMED DECONTAMINATION OF ECS IAW AMM 21-00-00. NO FUMES NOTED. THIS CLEARS MDDR 24766. MOC NOTIFIED. PLACARD REMOVED.