Is there any way we can predict an air crash?
Yes, many aircraft are fitted with TCAS which predicts one type of crash - an aerial collision.

Many aircraft are fitted with GPWS which predicts another type of crash - controlled flight into terrain.

The ground based ATC have systems that predict a loss of separation, the Short-Term Conflict Alert [STCA]. See this question about separation and conflicts. In terms of predictions this would constitute a very high rate of false positives. But that is good.

Because of the predictions, many crashes are avoided.