As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLOSED 2748 FROM PHL TO DTW, DECLARED AN EMERGENCY AND RETURNED TO THE FIELD DUE TO A COWL ANTI-ICE FAIL AND 14TH STAGE BLEED FAIL. MAINTENANCE IS IN THE PROCESS OF TROUBLESHOOTING. 12/11/04, MAINTENANCE REPLACE PYLON LOOP A OPS CHECKED GOOD.