some may say "you should see if the aircraft is shaking.if so ,then you should do the severe damage ,and if there is no shaking and the other engine parameters stay normal ,u should just do the engine limit "but some others believe once the EGT goes above the limit ,there could be a damage
The QRH is clear and unambiguous. There is no need to listen to what some say when the current symptoms match the condition statement of a non-normal checklist.
I thought the CFM 56 could take up to some 40C above engine limit temp for over up to 5 mins without damage to the engine
The answer is in the AFM. For the 3C-1 you have 20 secs below 10deg overheat to correct before you get an EGT warning.