Found this link to a forum that he appears to have been contributing to:
http://www.forum.uniforminsignia.net...r=asc&start=15
I think that although this thread has nothing to do with Military Aircrew, it is worth leaving it for its amusement value, it certainly made my evening.
The word
ibnterpretrix does not appear within any google search, so one has to assume it was a mis-type of something equally amusing.