Originally Posted by
Pilot DAR
I cannot imagine their being released to service without at least a full overhaul.
A boroscope inspection will reveal if there is any damage to the engine core. If yes, indeed a full teardown. Regardless of the core, the fan disk will need extensive testing to check for any signs of overstress, if the test is positive it will need to be discarded, such damage is non-repairable. Any visible damage on the fan blades and especially the cowling is the least of the worries here.