Many thanks for the clarification ChickenHouse. I still don’t fully understand though why people don’t appear on the database. Obviously those who have never held an FAA licence will not appear but for example, I myself had an FAA Airman Certificate, admittedly rather a long time ago, issued on the basis of a CAA licence and I have no entry in the database. Others whom I know did their initial licence in the US are not there; I have searched even for one who I know did his ATPL in the States and there is no entry. It could of course, (most likely!), be that I am just using the search function wrong.