Flyboy, I think you make some valid points about whether or not an "unathorized" use of a trademark is used in a commercial application to make money. I'd be shocked if Boeing went after private citizens or non-profits who restored or built replicas of planes an called them "P-51 Mustangs". But what if they add a seat and charge $1500 a pop for rides in their "Mustang"? Or rent their plane out to a movie company making a WW2 movie? I'm also not sure it matters that the USAAF or RAF, not North American, actually gave the plane its names "P-51" or "Mustang". That didn't stop Northrop-Grumman from making Ubisoft/IC Maddox penny up for calling a bunch of pixels the USN designation "F4F"" in their sim.