What is that plane doing?!

Driving through the Cotswolds to meet a friend for a pub lunch today I was suddenly overwhelmed by a deafening sound that I thought was a terminal issue with my car. But no, it was a veteran Jumbo jet making its last ever landing at Kemble airfield where it will be broken up. If I had not known how near the airfield was I would have assumed this was an imminent air crash. (Still from my dash cam. )