As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#761, LGA-PBI. 'STRING DIRTY SOCK SMELL STARTING AT 8,000 FT ENTERING CLOUDS UNTIL PARKING ENG THRUST IDLE INITIALLY WITH APU OFF. SMELL BOTH IN THE COCKPIT AND REPORTED BY INFLIGHT IN CABIN ( APU BLEED AIR SUPPLY SYSTEM).' (SUPPLEMENTAL TO FOLLOW)