Assessment ScoreCard – 31 Day

Assessment Scorecard headlines

All Assessments are based on an ambient background noise of 40 decibels i.e. a quiet residential area. If your property is located near to a busy road i.e. 70-75 decibels, the noise impact from aircraft will be significantly reduced, whilst the road remains busy.

Note: Airborne aircraft noise is typically in the range of 45dB - 65dB for heights below 26,000 feet and for a duration of 30-50 seconds. Whereas the average car, bus or HGV the duration is only a few seconds.

Date of survey

06/04/2025 13:34:41

UK Postcode

KIDBROOKE-SOUTH-SUMMER24 , LONDON , SE9 6AU

Baseline geo-coordinates

51.4537 , 0.033113

Survey type

31 days prior to: 31-Aug-2024 @23:29:36

Assessment band

HIGH

Assessment actual value

16.20

Assessment description

Likely to encounter both night-time and day-time noise disturbances that are caused by high volumes of planes flying at at low altitude. Also expect a visual impact too.

Band range

Lower: 16.0 --> Upper: 20.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

4,577 / 147.6 / 8.7 ❌ (3,212)

Flights above 26k feet.

953 / 30.7 / 1.8 ❌ (753)

Flights between 16k and 26k feet

160 / 5.2 / 0.3 ✔

Flights between 13k and 15k feet

61 / 2.0 / 0.1 ✔

Flights between 7k and 12k feet

47 / 1.5 / 0.1 ✔

Flights between 6k and 7k feet

176 / 5.7 / 0.3 ❌ (155)

Flights between 5k and 6k feet

1,641 / 52.9 / 3.1 ❌ (228)

Flights between 4k and 5k feet

1,049 / 33.8 / 2.0 ❌ (271)

Flights between 3k and 4k feet

51 / 1.6 / 0.1 ✔

Flights below 3k feet

439 / 14.2 / 0.8 ✔

4 or more flights per hour

399 / 12.9 ❌ (206)

9 or more flights per hour

161 / 5.2 ❌ (78)

Departures between 1.5k and 15k feet

50 / 1.6 / 0.1 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

36 / 1.2

Between 1am and 2am

30 / 1.0

Between 2am and 3am

19 / 0.6

Between 3am and 4am

9 / 0.3

Between 4am and 5am

61 / 2.0

Between 5am and 6am

71 / 2.3

Between 6am and 7am

287 / 9.3

Between 7am and 8am

316 / 10.2

Between 8am and 9pm

3,528 / 113.8 / 8.1

Between 10pm and 11pm

127 / 4.1

Between 11pm and Midnight

42 / 1.4

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

27 ✔

Percentage of overflying occuring Out-Of-Hours and at Weekends

45 ❌ (44)

Minimum avg. distance in miles

0.54

Number of possible disruptions by; day / out-of-hours / hour

111.0 / 50.0 / 5.8 ❌ (68)

Flight holding stack identified?

No

Altitude for all flights

11,593 ❌ (17,475)

Altitude of departures between 1.5k and 15k feet

10,805 ✔

Altitude of flights below 20k feet

5,249 ❌ (8,784)

Busiest times of day
(Distruption: 0 - low, 25+ high)

Day of week, time, frequency and number of flight events.

23.30

Thursdays between 10:00 and 11:00 - 4 time(s) in 4 weeks. Approx:13 flight events.

19.50

Saturdays between 9:00 and 10:00- 4 time(s) in 4 weeks. Approx:11 flight events.

17.00

Thursdays between 11:00 and 12:00 - 4 time(s) in 4 weeks. Approx:9 flight events.

16.40

Thursdays between 7:00 and 8:00- 4 time(s) in 4 weeks. Approx:9 flight events.

15.70

Wednesdays between 8:00 and 9:00- 4 time(s) in 4 weeks. Approx:8 flight events.

15.30

Thursdays between 8:00 and 9:00- 4 time(s) in 4 weeks. Approx:9 flight events.

15.20

Thursdays between 18:00 and 19:00 - 4 time(s) in 4 weeks. Approx:8 flight events.