As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#1 BLEED HOT CAUTION ILUMINATED INTERMITANATLY. RETURNED TO FIELD. LANDING UNEVENTFUL. REMOVED FROM SERVICE. REPLACED #1 ENGINE NACELLE DUCT-LEAK OVER TEMP SWITCH IAW Q400 AMM TASK # 36-11-21-000/400-801. OPS CHECK STILL REQUIRED. C/W OPERATIONAL TEST OF THE BLEED AIR SYSTEM IAW Q400 AMM TASK 36-11-00-710-802. OPS TESTS GOOD. RETURNED TO SERVICE.