I've also found absolutely nothing through dozens of inspections. Has anyone actually found ash deposits?!
Who is deeming that flight through 'volcanic ash' is unsafe? Has anyone got limits from engine/airframe manufacturers stating how many parts per million of ash will cause damage to their components? My knowledge of it is that even if ash was encountered in low concentrations it would only cause greater wear on engines and abrade windows/airframe structure, not cause the aircraft to plummet earthward. Shouldn't this be a cost decision on the part of the airlines, not the Met Office?!