What I find curious is that not one of the many that have flown through "the zone" seem to have published borescope results, or oil spectronalysis results, both of which are eminently do-able.
Will the CAA require aircraft that have traversed the suspect zone perform hidden damage checks as they would, for instance, in a heavy landing incident?
What are the implications of unnoticed/unreported encounters, and the IFSD rate especially for ETOPS?