EPC
There is an other possibility to perform an EPC when the reading seems to be not accurate. FLM authorises to perform it engine by engine in training mode. The training OEI Hi is equivalent to the real AEO take off power, it will not damage the engines if you respect the limitation. Stabilisation 3 minutes, EPC 50 seconds, computation 20 seconds. Total time below 5 minutes.
Cheers