Engine chip light question.
Hello, I had an engine chip light that flickered when I was spooling up the other day in an astar350. It went out and maintenance checked the plugs and said they found carbon on it.The next day the light came on steady after shutdown. I checked and cleaned the plugs myself and found nothing and the light was distinguished. The mechanic said it is ok to fly. They recently changed the transmission, but this is an engine chip light... any thoughts?