ADVOKS GLOBAL · KENYA
The Civil Aviation (Environmental Protection Aircraft Noise) Regulations, 2025
74. Noise certification reference procedures-General conditions
Edition: 2026-03-03 · In force
74. Noise certification reference procedures-General conditions
(1)The reference procedures shall comply with the appropriate airworthiness requirements.(2)The reference procedures and flight paths shall be approved by the certificating authority.(3)Except in conditions specified in 13.6.1.4, the take-off, overflight and approach reference procedures shall be those defined in 13.6.2, 13.6.3 and 13.6.4, respectively.(4)When it is shown by the applicant that the design characteristics of the tilt-rotor would prevent a flight from being conducted in accordance with 13.6.2, 13.6.3 or 13.6.4, the reference procedures shall—(a)depart from the reference procedures defined in 13.6.2, 13.6.3 or 13.6.4 only to the extent demanded by those design characteristics which make compliance with the reference procedures impossible; and(b)be approved by the certificating authority.(5)The reference procedures shall be calculated under the following reference atmospheric conditions—(a)constant atmospheric pressure of 1 013.25 hPa;(b)constant ambient air temperature of 25°C, i.e. ISA + 10°C;(c)constant relative humidity of 70 per cent; and(6)For the purpose of these regulations, the maximum normal operating rpm shall be taken as the highest rotor speed for each reference procedure corresponding to the airworthiness limit imposed by the manufacturer and approved by the certificating authority.(7)Where a tolerance on the highest rotor speed is specified, the maximum normal operating rotor speed shall be taken as the highest rotor speed about which that tolerance is given.(8)Where the rotor speed is automatically linked with the flight condition, the maximum normal operating rotor speed corresponding with the reference flight condition shall be used during the noise certification procedure.(9)Where the rotor speed can be changed by pilot action, the maximum normal operating rotor speed specified in the flight manual limitation section for the reference conditions shall be used during the noise certification procedure.