During the afternnon of 8 September a helicopter was flying over central London trailing a large Quantas advertising banner. The aircraft made several circuits during the 20 minutes or so it took me to walk between meetings.
I have no idea of the risk of an accidental detachment, and clearly a falling banner would not represent anything like the threat posed by a concrete laden container. Nevertheless, the consequences of such an event could be serious if it fell on a moving vehicle. The odds of landing on a car, lorry, bus or train must be much higher than the odds of hitting a lone cable car.
Given the comments on this thread about the regulation of carrying loads outside a helicopter and what does or does not constitute good practice can anyone comment on the regulatory position in the UK?