As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON ARRIVAL AT JFK MAINTENANCE FOUND THAT THE AIR DRIVEN PUMP TURBINE HAS SEPARATED FROM THE AIRCRAFT AND HAD GONE THROUGH THE FUSELAGE AND OUT THE GEAR DOOR. CREW SENT AN ACARS MESSAGE THAT THEY HAD A PRESS LIGHT ILLUMINATE WHEN DROPPING FLAPS. MAINTENANCE IS IN PROGRESS.