Via Google translation:
Air Force studies, the ash dust did not cause significant damage to the Air Force Hornet fighter jet engine. Exposed volcanic tuhkalle fighter engine study found, however, signs of the engine surfaces accumulated contaminants.
Air Force safety switch engine parts, which show signs or foreign material implantation. Detachable parts will be carefully analyzed, and then settled their usefulness in the future.
Machine on the surface of the collected dust and engine components of the samples have not yet shown results. The analysis of air samples, however, is found in volcanic material in the typical elements such as aluminum, silicon, magnesium, sulfur and iron.
Operations will continue piston engine fleet. Aviation training jet-turbine equipment, and kick start gradually.
Two Air Force Hawk jet trainer planes remain on standby Pirkkala base case letters rogatory. Both are sampling its safety yet.
Operational Operations are managed as usual.
So not quite no damage, but perhaps better characterized as limited or minimal damage.
- GY