AIRPLANE
FLIGHT
MANUAL
APPENDIX 2
GUIDANCE INFORMATION
AP2-10
REVISION 4 code 01 Page 1
AFM-1385
NOISE LEVELS - ICAO ANNEX 16 CHAPTER 4
Effective Perceived Noise Level (EPNL) exceedances for
EMBRAER 170 models and engine versions are listed in the tables
below. All the data herein presented is based on the EMBRAER 170
airplane noise certification test data base.
Compliance to ICAO Annex 16 Section 4.4 is met when:
1. Of the 3 noise levels, none may exceed the Stage 3/Chapter 3
limits, without considering trades. Thus the maximum
Stage3/Chapter 3 exceedance at any one point is 0 dB.
2. For any two of the 3 conditions, the sum of the exceedances at any
2 conditions must be less than -2 dB.
3. The sum of the exceedances at all 3 conditions must be less than
-10 dB.
The correspondent engine noise level, as perceived by human ear, is
presented at the Maximum A-Weighted Sound Level table.
MODELS: LR AND SU ENGINE: CF34-8E5
EFFECTIVE PERCEIVED NOISE LEVELS
Condition
Gross
Weight
Flap
Test
EPNL
(dB)
Stage 3/
Chapter 3
Limit (dB)
Exceedance
(dB)
Flyover
MTOW 1 84.08 89.00 -4.92
Lateral
MTOW 1 92.26 94.23 -1.97
Approach
MLW 6 94.89 98.21 -3.32
Cumulative -10.21
MAXIMUM A-WEIGHTED SOUND LEVELS
Condition Gross Weight Flap Noise – dB (A)
Flyover
MTOW 1 71.7
Approach
MLW 5 84.6
Approach
MLW 6 85.5
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