What was found
ODOR IN CABIN DURING APU VISUAL INSPECTION, FOUND APU FCU LEAKING FUEL AT IGV ACTUATOR LINES ON FCU SIDE, R & R FUEL DRAIN, RETURN TUBE & TWO SUPPLY TUBE PACKINGS TO FCU IAW AMM 49-31-01-004-001-001. OPS & LEAK CHECKS PERFORMED. NO LEAKS NOTED. PERFORMED CHECKS FOR ODOR RAN LT & RT PACKS AS INDEPEDANTLY & INDEPENDENTLY RUNNING RECIRC FANS IN CONJUCTION WITH PACKS. ALL ODOR HAD DISSIPATED. IAW AMM TASK 05-51-56-202-001-001, LT & RT RECIRC FANS MUST BE REPLACED PRIOR TO NEXT FLT. R & R LT & RT RECIRC FILTERS IAW AMM 21-25-02 & AMM 05-51-56 STEP D. OK TO CONTINUE. PERFORMED FINAL INSPECTION OF CABIN AFTER RECIRC FAN FILTER CHANGE, ACFT HAD NO SIGNS OF ODORS. ACFT OKAY FOR SERVICE.