ADVOKS GLOBAL · KENYA
The Civil Aviation (Environmental Protection Aircraft Noise) Regulations, 2025
50. Noise certification reference procedures-General conditions
Edition: 2026-03-03 · In force
50. Noise certification reference procedures-General conditions
(1)The noise certification reference procedures shall comply with the appropriate airworthiness requirements.(2)The reference procedures and flight paths shall be approved Authority.(3)Except in conditions specified in regulation 50(4), the take-off, overflight and approach reference procedures shall be those defined under Regulation 51, 52 and 53, respectively.(4)Where it is shown by the applicant that the design characteristics of the helicopter would prevent flight being conducted in accordance with Regulations 51, 52 or 53, the reference procedures shall—(a)depart from the reference procedures defined under Regulations 51, 52 or 53 only to the extent demanded by those design characteristics which make compliance with the reference procedures impossible; and(b)be approved by the 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;(c)constant relative humidity of 70 per cent; and(6)The maximum normal operating rpm, under Regulation 51(c), 52(c) and 53 (c), 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. 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. If the rotor speed is automatically linked with flight condition, the maximum normal operating rotor speed corresponding with the reference flight condition shall be used during the noise certification procedure. If 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.