B737-300 CREW HAD ENG FAN BLADES THAT HAD ICE ACCUMULATION; AND WERE DAMAGED.

Narrative

I WAS THE CAPT ON FLT #ABCD ON OCT/THURS/02 ZZZ; US. WE RECEIVED ACFT X AT GATE IN ZZZ. THE ACFT ARRIVED WITH AIRFRAME ICE VISIBLE DUE TO THE APCH INTO ZZZ. WE FOLLOWED SOP IN HAVING THE ACFT DE-ICED. WE THEN FLEW THE ACFT UNEVENTFULLY TO ZZZ1. UPON ARR IN ZZZ1 THE ACFT WAS FOUND TO HAVE FAN BLADE DAMAGE TO THE #2 ENG. WE WERE SURPRISED TO LATER HEAR ABOUT THE ENG DAMAGE IN LIGHT OF THE FACT THAT THE ACFT WAS PROPERLY DEICED AND ALL ACFT INDICATIONS WERE NORMAL. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE AIRPLANE LNDG GEAR; ENG INLET AND FAN BLADES WERE DEICED ON THE GATE AND AFTER PUSHBACK WAS TAXIED TO A DEICING PAD FOR THE ENTIRE ACFT TO BE DEICED. THE RPTR SAID AFTER DEICING A VERY SLIGHT VIBRATION WAS NOTED FROM #2 ENG AND THE ENG WAS ADVANCED TO 70 PERCENT PER THE FLT OPERATING MANUAL TO SHED ICE. THE RPTR STATED ON FLT TERMINATION THE R ENG WAS FOUND TO HAVE FAN BLADE DAMAGE. THE RPTR SAID THE AIRPLANE HAD BEEN DEICED PER THE STANDARD OPS PROC.