Test flights raise hope for European air traffic
...but Dutch and German test flights carried out without apparent damage...
I thought that the use of the word apparent was interesting.
I think they meant that a first look didn’t uncover any damage, hence no “apparent damage”. After they borescope the engines they’ll know more but the ash makes itself apparent in things like cockpit windows that get sandblasted and radomes that show the wear and tear. That kind of stuff is immediately apparent.