Before I was posted to Farnborough, I attended the 1970 airshow there.
Pee Wee Judge flew the Wallis autogyro and pulled up then the aircraft started 'tumbling' and never recovered.
I was posted in to Farnborough as a controller in 1974 and was helping compile the daily flying programme when the S67 Blackhawk helicopter 'got it wrong' and crashed with 2 fatallities.
Some years later at another Farnborough Show, as I walked to the tower after finalising the next days flying programme I glanced up and saw the Buffalo circling over head gently descending. I went in the door and heard a muffled bang behind me which I thought was the door behind me shutting.
Then people burst out of doors and ran up stairs to the tower, so I looked out of the window to see the Buffalo which by then was on the ground with the flames dying down.