Table 10.
Measured sound levels for the aircraft B787-900 (flight 1), total measurement duration 24 m 7 s, entire trip duration 6 h 5 m.
| Segment | Duration (s) | [dB(A)] | [dB(A)] | [dB(C)] | [dB(C)] | Flight stage |
|---|---|---|---|---|---|---|
| 1 | 55.7 | 67.0 | 69.7 | 82.5 | 85.8 | Taxiing |
| 2 | 121.1 | 66.5 | 69.0 | 84.0 | 91.0 | Taxiing |
| 3 | 403.7 | 73.5 | 81.2 | 92.0 | 101.5 | Takeoff |
| 4 | 107.7 | 70.8 | 71.6 | 86.4 | 87.6 | Cruising |
| 5 | 112.4 | 73.8 | 76.4 | 87.7 | 89.0 | Cruising |
| 6 | 107.0 | 71.1 | 72.0 | 85.1 | 86.0 | Cruising |
| 7 | 5.6 | 72.2 | 73.7 | 84.5 | 85.1 | Cruising |
| 8 | 63.9 | 71.9 | 72.5 | 84.4 | 85.1 | Cruising |
| 9 | 39.2 | 70.4 | 74.4 | 84.5 | 85.4 | Cruising |
| 10 | 119.3 | 69.4 | 71.2 | 85.6 | 87.0 | Cruising |
| 11 | 78.8 | 71.0 | 72.0 | 85.7 | 86.9 | Landing |