The Civil Aviation (Environmental Protection Aircraft Noise) Regulations, 2025

9. Trade-offs

Edition: 2026-03-03 · In force

9. Trade-offs

Where the maximum noise levels are exceeded at one or two measurement points—

(a)the sum of excesses shall not be greater than 4 EPNdB, except that in respect of four-engined aeroplanes powered by engines with a bypass ratio of 2 or more and for which the application for a certificate of airworthiness for the prototype was accepted, or another equivalent prescribed procedure was carried out by the certificating authority, before 1 December 1969, the sum of any excesses shall not be greater than 5 EPNdB;

(b)any excess at any single point shall not be greater than 3 EPNdB; and

(c)any excesses shall be offset by corresponding reductions at the other point or points.

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Source: Kenya Law