Have ash/particulate sample screens been suggested as a fit on every aircraft.. Surely weekly checks on such a device, visually at first, presuming several different particle size compartments, would allow a quick estimate of potential engine life reduction and SFC increase to be made, fed back to to engineering depts..
Surely such a device would be fairly simple to design, if not already in airborne service in some applications
PS. Excuse and forgive if this has been discussed, it is rare I post without reading the whole thread, but after 50 pages had ot come across such a suggetsion, so have to beg out... and jump forward quickly!