As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DEN - ENGINE START ATTEMPT - FLT 489 WHILE STARTING NR 1 ENGINE AT APPROXIMATELY 28 PERCENT N2 FUEL FLOW DECREASED TO ZERO. MAINTENANCE TROUBLESHOT SYSTEM IAW MM 28-22-00-1 STEPS 1-4, MM 71-00-41-1 STEP 1, 71-00-42-01, 71-00-59-1. MAINTENANCE PERFORMED A CHECK AND CLEANED OUT THE CDP TUBE. MAINTENANCE INSPECTED THE MAIN ENGINE CONTROL AND SPECIFIC GRAVITY WITH NO FAULTS FOUND. MAINTENANCE RAN ENGINE 4 COMPLETE CYCLES. ENGINE CHECK GOOD.