As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHL-SYR FLIGHT 3814. WHILE IN CRUISE FLIGHT CREW REPORTED REAR BAY OVERHEAT CAUTION LIGHT FOR APU ILLUMINATED. CREW DECLARED AN EMERGENCY AND DIVERTED TO MDT. MAINTENANCE FOUND A BLEED LEAK IN REAR BAY. O-RING AND PERRY SEALS REPLACED ON BLEED LINES. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.