From a licensed engineer perspective
I have never seen a maintenance manual task for inspection after ingestion of volcanic ash. until there is one in the manual or an approved inspection from the manufacturer, how are engineer supposed to close a tech log entry for this type of ingestion event.
it is the duty of the manufacturer to prove that this type of ingestion event is safe.not willy walsh or a BA boroscope inspector.
did BA ,LH KLM or any other of these 'test airlines' contact the aircraft manufacturer after there flight and look for an inspection procedure??
airlines will probably have to carry out extensive aircraft inspections after each flight.. will this be worth it, an AOG after each flight??
thankfully we have a sensible group(eurocontrol) that are not reducing their saftey standards for commercial interests.
and BTW i am stranded in Hungary.