ADVOKS GLOBAL · KENYA
The Civil Aviation (Environmental Protection Aircraft Noise) Regulations, 2025
38. Test procedures
Edition: 2026-03-03 · In force
38. Test procedures
(1)The test procedures shall be acceptable to the Authority.(2)The test procedures and noise measurements shall be conducted and processed in an approved manner to yield the noise evaluation measure designated as effective perceived noise level, EPNL, in units of EPNdB, as described in the Third Schedule.(3)Acoustic data shall be adjusted by the methods outlined in the Third Schedule of the reference conditions specified in this chapter. Adjustments for speed and thrust shall be made as described in Section 8 of the Third Schedule.(4)Where the mass during the test is different from the mass at which the noise certification is requested, the necessary EPNL adjustment shall not exceed 2 EPNdB for take-offs and 1 EPNdB for approaches.(5)In determinining the variation of EPNL with mass for both take-off and approach test conditions, data approved by the Authority shall be used and the necessary EPNL adjustment for variations in approach flight path from the reference flight path shall not exceed 2 EPNdB.(6)For the approach conditions the test procedures shall be accepted if the aeroplane follows a steady glide path angle of 3° ± 0.5°.(7)Where equivalent test procedures different from the reference procedures are used, the test procedures and all methods for adjusting the results to the reference procedures shall be approved by the certificating authority. The amounts of the adjustments shall not exceed 16 EPNdB on take-off and 8 EPNdB on approach, and if the adjustments are more than 8 EPNdB and 4 EPNdB, respectively, the resulting numbers shall not be within 2 EPNdB of the limit noise levels specified under Regulation 33.