Originally Posted by Carol Nistri
You know Skep,I just had my husband review for me the different designations of those letter a C in front of the number is a Cargo plane,an F is a fighter a B is a bomber,I asked him what if the designation was TR,he said this would indicate Trainer.Seems like an awful fancy trainer plane donit?
TR means Tactical Reconnaissance. The only TR currently acknowledged is the TR-1A, which is an updated U-2. There used to be speculation about a TR-3, which was supposed to be a long-range recce aircraft. The American aerospace press has a horrible habit of just making this stuff up, based on the odd eyewitness report, a little radio monitoring, and "leaks" from "sources." The sources are virtually always playing some game of their own.
This TR-6 thing looks to me to have been made up out of nothing by some UFO fan. Google TR-3 and you'll eventually get to links to Aviation Week and Space Technology, notorious for this kind of thing and sometimes referred to as "Aviation Leak and Space Mythology." Google TR-6 and you get nothing but UFO sites.
A good source on this stuff (although horribly out of date) is Mystery Aircraft