How long before it fell off?

Had that happen on Paris piripherique off at 1st exit park up get spanners out and do a bit of work was lucky was on middle axle just lowered suspension to bottom jack up axle a nd put 2 ratchet straps on suspension back to normal and crack on no drama just get on with the job.most new drivers don’t even carry a screwdriver useless most of them,not my job will get a call out,they won’t even change a bulb FFS