Table 6.

Measured sound levels for the aircraft A350-900 (flight 3), total measurement duration 55 m 21 s, entire trip duration 3 h 26 m.

Segment	Duration (s)	$L_{\mathit{eq}}$ [dB(A)]	$L_{\mathit{max}}$ [dB(A)]	$L_{\mathit{eq}}$ [dB(C)]	$L_{\mathit{max}}$ [dB(C)]	Flight stage
1	27.5	65.1	72.1	79.5	81.0	Taxiing
2	8.0	62.3	62.8	79.8	80.4	Taxiing
3	85.3	62.8	72.7	78.4	80.8	Taxiing
4	368.2	65.3	73.7	82.5	89.4	Taxiing
5	292.9	64.1	72.6	82.2	86.8	Taxiing
6	423.5	73.7	80.2	90.7	100.1	Takeoff
7	363.5	76.3	78.0	89.5	90.6	Cruising
8	52.4	77.4	79.3	90.1	91.0	Cruising
9	300.0	77.9	79.7	90.7	91.9	Cruising
10	172.8	74.9	77.0	87.8	88.7	Cruising
11	112.4	75.8	76.7	88.6	89.4	Cruising
12	152.9	74.3	76.1	87.2	89.2	Cruising
13	181.1	73.0	76.8	86.3	88.6	Cruising
14	57.0	75.3	76.3	88.3	89.4	Cruising
15	11.0	72.4	72.9	85.6	86.3	Cruising
16	120.9	72.0	75.6	87.9	92.0	Cruising
17	81.5	68.8	69.8	83.8	84.7	Cruising
18	120.7	69.3	77.5	83.4	84.9	Cruising
19	165.7	69.3	72.8	84.5	86.8	Cruising
20	110.2	76.2	82.3	91.3	98.7	Landing