When the audience comes in with too many transactions and therefore will support chan at the "dead pedal." in the hills, it's happening, and Farnborough, killed as many as 96 people.
When the audience entered the field are much greater than the grandstand to accommodate it. Thus was born the "dead pedal" in Hills Boro had happened and resulted in the deaths of up to 96 people.
When the audience enters the yard, there are too much grandstand will support it. It happens "step on each other" in the hills burro, had happened and resulting in the death of a lot to 96 people.