First Jet solo, Barkston Heath 1988, was down to the wire. Solo or chop, it was that close and my time was up, it looked very bad for me. My instructor looked at the fuel and said "if you have to go around, take it back to Cranwell, there isn't enough fuel for 2 circuits". Afterwards he jumped in and sat on top of the seat blind without strapping in for the journey back. That was the lowest I ever saw JP fuel gauges.
Sir, thank you for not chopping me, I have turned out alright!!