Table 15.
Measured sound levels for the aircraft B777-200ER, total measurement duration 31 m 51 s, entire trip duration nine h 49 m.
Segment | Duration (s) | [dB(A)] | [dB(A)] | [dB(C)] | [dB(C)] | Flight stage |
---|---|---|---|---|---|---|
1 | 374.7 | 73.4 | 82.2 | 93.2 | 103.7 | Takeoff |
2 | 131.0 | 75.3 | 76.2 | 89.8 | 90.4 | Cruising |
3 | 70.2 | 75.5 | 76.4 | 89.9 | 90.8 | Cruising |
4 | 39.2 | 75.6 | 76.2 | 89.8 | 90.3 | Cruising |
5 | 64.1 | 73.6 | 74.4 | 87.1 | 87.8 | Cruising |
6 | 69.3 | 73.9 | 77.0 | 85.8 | 86.9 | Cruising |
7 | 123.7 | 71.9 | 72.6 | 85.7 | 86.6 | Cruising |
8 | 185.9 | 70.3 | 72.3 | 86.0 | 87.6 | Cruising |
9 | 212.0 | 70.1 | 73.7 | 84.8 | 88.0 | Cruising |
10 | 33.8 | 71.0 | 72.4 | 83.2 | 83.9 | Cruising |
11 | 82.7 | 73.0 | 87.5 | 82.9 | 90.8 | Cruising |
12 | 118.3 | 68.3 | 71.0 | 82.9 | 92.6 | Cruising |
13 | 266.3 | 73.9 | 80.9 | 89.0 | 97.9 | Landing |