What was found
FLT#2519, LGA-MSY. 'FA/S IN REAR OF AIRPLANE REPORTED STRONG MUSTY ODOR AT AROUND 10000' ON DESCENT ACCOMPANIED BY HEADACHE. FO ALSO REPORTED THE SMELL BUT NOT AS STRONG ( PACKS ); RAN BOTH ENGINES WITH RESPECTIVE PACKS AND BLEEDS. 2 FULL CYCLES HOT AND COLD, NO ODOR FOUND. CHECKED HEAT EXCHANGER INPUTS, NO OIL FOUND. CHECKED APU WITH U/V LIGHT, AND FOUND OIL AT COMPRESSOR INLET. BLEED AIR ELBOW DRY PLACED APU ON MEL, L.P. 3354649 # 1. MDDR 471700 CLR. MCC CHRIS ADV. DISP. 44038 CONCURS PACKS 1 AND 2 O.K.'