The tape shows a descending turn with slight wing rock as the aircraft rounded Whittle Hall....
72' agl was the alleged minimum to which it descended.
The tape used to be used on the Flying Supervisors' Course as an example - it has, to the best of my knowledge, not leaked into the spotters' world.
Mods, if we get any stupid links to ill-disciplined SOAF low flying clips, please close the thread!