I'm not debating the whys and wherefores, but should a trial have a full consultation? Interesting question.
I'm not sure of the "full" - but if the airport wants to maintain any level of trust with the local communities and a sense of a social licence to operate it needs to have a meaningful engagement with the people it is going to affect in advance of inflicting significant changes from trial procedures. Noise effects need to be considered way beyond the 57dBA Leq16hr averaged contour.
http://teddingtontown.co.uk/wp-conte...d-20140921.pdf