ADVOKS GLOBAL · KENYA
The Civil Aviation (Environmental Protection Aircraft Noise) Regulations, 2025
66. Noise certification reference procedures-General conditions
Edition: 2026-03-03 · In force
66. Noise certification reference procedures-General conditions
(1)The reference procedure shall comply with the appropriate airworthiness requirements and shall be approved by the certificating authority.(2)Except as otherwise approved, the overflight reference procedures shall be as defined under regulation 68.(3)When it is shown by the applicant that the design characteristics of the helicopter would prevent flight being conducted in accordance with regulation 68 the reference procedure shall be permitted to depart from the standard reference procedure, with the approval of the certificating authority, but only to the extent demanded by those design characteristics which make compliance with the reference procedures impossible.(4)The reference procedures shall be established for 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(5)The maximum normal operating rpm shall be taken as the highest rotor speed corresponding to the airworthiness limit imposed by the manufacturer and approved by the certificating authority for overflight. 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 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.