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Civil Aviation Bill

Does the Under-Secretary accept that even if there are some disagreements in the literature about the levels and frequencies of noise that most disturb sleep, there can be no doubt that the number of night flights is clearly and unequivocally measurable? The so-called average amount of noise generated through the night is difficult to measure—indeed, given the lack of response by protesters to individual flights that appear to have deviated from their flight paths or perhaps should not have taken place, it seems to be impossible in some cases.