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)	$L_{\mathit{eq}}$ [dB(A)]	$L_{\mathit{max}}$ [dB(A)]	$L_{\mathit{eq}}$ [dB(C)]	$L_{\mathit{max}}$ [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