Getting to Grips with Aircraft Noise

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3 - JET-PLANES NOISE CERTIFICATION 3.2. ICAO ANNEX 16 VOLUME 1 CHAPTER 3 This ICAO Chapter 3 is applicable to aircraft for which the application for certificate of airworthiness for the prototype was accepted on or after 6 October 1977 and before 1 January 2006. As a consequence, all relevant aircraft are nicknamed “Chapter 3”. This is the case of most commercial airplanes, and for all Airbus aircraft. 3.2.1. NOISE EVALUATION MEASURE ICAO Annex 16 Volume 1 Chapter 3 §3.2 The noise evaluation measure shall be the effective perceived noise level in EPNdB. 3.2.2. NOISE MEASUREMENT POINTS ICAO Annex 16 Volume 1 Chapter 3 §3.3 An aeroplane, when tested in accordance with these Standards, shall not exceed the noise levels specified in Chapter 3 §3.4 at the following points: 3.2.2.1. LATERAL FULL-POWER REFERENCE NOISE MEASUREMENT POINT The point on a line parallel to and 450 m from the runway centerline, where the noise level is a maximum during take-off. 12 Flight Operations Support & Line Assistance Getting to grips with aircraft noise
Flight Operations Support & Line Assistance Getting to grips with aircraft noise 3 - JET-PLANES NOISE CERTIFICATION 3.2.2.2. FLYOVER REFERENCE NOISE MEASUREMENT POINT The point on the extended centerline of the runway and at a distance of 6.5 km from the start of roll. 3.2.2.3. APPROACH REFERENCE NOISE MEASUREMENT POINT: The point on the ground, on the extended centerline of the runway 2 000 m from the threshold. On level ground this corresponds to a position 120 m (394 ft) vertically below the 3° descent path originating from a point 300 m beyond the threshold. 13
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9.3.5. AIRCRAFT NOISE DESCRIPTION F
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9.4. NOISE SINGLE EVENT DESCRIPTION
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9.5.9. SOME INDICES USED IN DIFFERE
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10.3. ANALYSERS Flight Operations S
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Getting to Grips with Aircraft Noise

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