Definitely not a towing accident but a the soon to be ex of a colleague of mine managed to wangle a visit to the AFS with her daughter in deepest darkest Cornwall one weekend.
Whilst taking a fire fighting appliance for a spin down the runway, trying to impress the guests with the performance, they managed to tip it on its side while trying to negotiate a corner too quickly.
My e-mail to some squadron mates who were embarked at the time, comically describing the incident, brought them much mirth, but the view of the Station CO (and my colleague) was, understandably, less jovial.