As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA FLIGHT NR 2383: NR 1 FUEL TEMPERATURE STARTED FLUCTUATING IN THE 80 AND 90 DEGREE RANGE. C/W CHECKLIST. NO IMPROVEMENT. AIRCRAFT RETURNED TO FIELD. MAINTENANCE REMOVED AND REPLACED NR 1 ENGINE TEMP SENSOR IAW Q400 AMM TASK 73-31-09, PAGE 401-408. FUEL TEMP OPS CHECK AND LEAK CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.