Homsap, The other SEPs in question were flying upwind to the ATZ boundary, then crosswind to a lateral spacing of about 2.5 miles, flying the downwind leg completely outside of the ATZ then flying something like a 4 mile final. Our downwind spacing was as per RAF teaching, with the RAF roundel (about 2/3 wing span) just "touching" the runway.
Years later, in a civilian aircraft, our chief pilot received an irate phone call from an instructor who complained that he (in person) hadn't given way to him. It turned out that the CP was flying an instrument approach through the overhead (via the NDB) and talking to ATC. He briefly saw the other aircraft and assumed it was making an overhead join without calling. This was the aircraft flown by the instructor. Not only had the instructor left his own ATZ (he was flying circuits at another airfield, 6 nm away) on an extremely long "downwind" leg but he had entered the ATZ of another airfield to the overhead at circuit height, where the alleged incident occurred!
Last edited by ShyTorque; 2nd Jul 2017 at 23:27.