Pity I didn't take a camera to work with me.... Occasionally aircraft will do a fly-past if they have a gear problem so that ATC and engineers can take a look-see before risking a landing. One day, very many years ago, at Heathrow a DC-9 operated by a well-respected European airline made such a fly past on 27L. At the threshold he broke right towards the tower..... right across T2... but so low we looked down on him from the tower and couldn't see the gear!! Some people outside T2 threw themselves to the ground in sheer terror! Ah.. magic days..