I really hope Denham has the nerve and finances to take this to appeal. An appalling decision and a really bad precedent. It raises the question though about any changes to normal practices at an aerodrome, the re-positioning of say a training area or FATO etc. which results in a change in noise footprint at the periphery of the aerodrome. From time to time, such zones need to move for a number of reasons and if the consequential impact can result in these kinds of legal challenges, then there's a very tricky road ahead.