As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN ON OF PRE BUYS INSPECTIONS WE CAME ACROSS SEVER DELAMINATION & WARPING FROM THE HEAT CREATED BY THE BYPASS AIR IN THE PRE-COOLER EXHAUST DUCTS. THESE WAS FOUND ON BOTH OF OUR PYLONS. I HAVE REACHED OUT TO OTHER OPERATORS AND THEY HAVE ALSO ACKNOWLEDGED THAT THEY HAVE HAD SIMILAR ISSUE WITH THEIR AIRCRAFT. I HAVE PICTURE AVAILABLE IF YOU WOULD LIKE TO SEE THEM.