Prototype Firecracker with piston engine. Des somehow made it sound like a Merlin; lovely healthy crackle when he throttled back.
When he performed at Farnborough for the first time, he would always pull onto the grass at the holding point awaiting his slot. Adj Flying asked why he did this; I surmised that maybe he hadn't got a parking brake and the grass would prevent him 'creeping'. Adj Flying pooh- poohed this but I was right!