The engines on the 738 of FU are CFM56-7B24E. The high pressure foam went into the engine core when the engine was running. Due to thermal shock, some blades were deformed, the oil pipes and electronic components might have also been affected. Both engines were expected to be written off.
Good luck in getting somebody to pay for this claim.
How many other cases where engines with no damage have been written off after being hosed?