As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED REAR BAY OVERHEAT AT FL 250. TROUBLESHOOTING FOUND BLEED AIR LEAK AT LT BLEED AIR VLV & LT NON-RETURN VLV. REMOVED LT BLEED AIR SOV & LT NON-RETURN VLV. REPLACE DEFECTIVE SEALS WITH NEW PN 20496-200A, 6-464-1PAR & HTE580-3060-112A & REINSTALLED BLEED AIR VLV & NON-RETURN IAW HS125-800 MM 21-10-25. PERFORMED ENGINE OPERATION CHECK & NO LEAKS NOTED.