just to clarify, 3rd party spectators are those outside the event, which i believe is now a post-shoreham consideration.. note the use of the phrase 'mitigation of risk' - that's legalise for 'arse covering'. Should something happen, then there is every likelyhood that the FDD/organiser would be in court being cross examined as to whether they honestly believed they had made reasonable provision for avoiding harm to 3rd party spectators (in addition to those inside the show!) 'tis the way of the world - do you think the officers running the football match at Hillsborough may've made different decisions of they considered they made be held legally accountable years later?
Ref the reds arrivals.. i believe that they have had a waiver in the past to do so as they are not carrying out aerobatics, just straight and level.. whether this will continue with the consideration of outside spectators then who knows - be interesting to see which displays they don't do this year due to the restrictions within and outside the venues. The mound was also closed for their display practice at CGY last year (?) again because they're aerobating rather than overflying
Ref Shuttleworth and the like.. there are different tiers of displays with different restrictions depending on how 'dynamic' they are, size and speed of aircraft etc.. in the wake of shoreham there did seem a bit of uncertainty around the regs issued at the time, which is why that venue has changed... the 230m from the crowd display line hasn't changed, but note shuttleworth now have restrictions around their venue on 3rd party gatherings..
Heathrow has nothing to do with any of this apart from the fact that they aircraft are carrying out normal arrival/departure procedures rather than aerobatics, so would be covered by the Rules Of The Air rather than either of these 2 docs.
