What was found
FLT#1952, MCO-BOS. "FUMES EVENT ON ARRIVAL AT 10,000 FT MUSTY DIRTY SCCK SMELL IN FLIGHT DECK AND FWD CABIN SMELL WENT AWAY WHEN #1 PACK TURNED OFF VIA PROCEDURE; INSPECTED A/C FOR OIL LEAK SIGNS. FOUND APU COOLING FAN TRANSFER TUBE LEAKING. R/R APU TRANSFER TUBE PER AMM 49-52-51 . LEAK CHECK GOOD RUN PACK ON EACH ENG AND APU. NO ODOR NOTED. PERFORMED A LEVEL AECS DECONTAMINATION PER AMM 21-00-00. A/ C OK FOR SERVICE."