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UK Civil Aviation Regulations

These are published by the CAA on our UK Regulations pages. EU Regulations and EASA Access Guides published by EASA no longer apply in the UK. Our website and publications are being reviewed to update all references. Any references to EU law and EASA Access guides should be disregarded and where applicable the equivalent UK versions referred to instead.

DORA Report 9023: The Use of Leq as an Aircraft Noise Index

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The results of the public consultation on the proposal to replace the Noise and Number Index by Equivalent Continuous Sound Level are reviewed. Although there were many questions about the way in which Leq might be used, especially with regard to the distinction between day and night, there was general support for its adoption. Means for calculating Leq contours are discussed, as is the comparability of NNI and Leq values.
Status:
Current
Review comment:
-
Version:
1
Version date:
01-Sep-1990
View file:

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