As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHORTLY AFTER TURNING ON WING A/I DUCT LEAK ILLUMINATED ALONG WITH RT ENG ANTI ICE. A/C DIVERTED INTO PHX. FOUND CLAMP DPN 366201022 HAD FAILED IN THE RT ENG/PYLON FWD SECTION, 16 SMALL RIVITS HAD FAILED ON THE CLAMP ALLOWING THE DUCT TO SEPARATE.