I have a Telemaster 70 Arf from the 90s with a 73 or 74" span.. I am quite sure this is the same as the modern 40 version, it was badged as a 40 size at the time. The original fuse had Telemaster 70 on the side, I had a mishap and got a replacment fuse and it had no markings on ithe fuse... It is a proven stable aircraft and I still enjoy flying today.