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

11/02/2025 16:34:39

UK Postcode

NORTH-BARNES , LONDON , SW13 9RT

Baseline geo-coordinates

51.4795 , -0.237886

Survey type

31 days prior to: 01-Sep-2024 @00:23:41

Assessment band

EXTREMELY HIGH

Assessment actual value

58.06

Assessment description

Highly 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: 30.0 --> Upper: 1000.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

18,482 / 596.2 / 35.1 ❌ (3,153)

Flights above 26k feet.

672 / 21.7 / 1.3 ✔

Flights between 16k and 26k feet

147 / 4.7 / 0.3 ✔

Flights between 13k and 15k feet

86 / 2.8 / 0.2 ✔

Flights between 7k and 12k feet

45 / 1.5 / 0.1 ✔

Flights between 6k and 7k feet

4 / 0.1 / 0.0 ✔

Flights between 5k and 6k feet

25 / 0.8 / 0.0 ✔

Flights between 4k and 5k feet

34 / 1.1 / 0.1 ✔

Flights between 3k and 4k feet

138 / 4.5 / 0.3 ✔

Flights below 3k feet

17,331 / 559.1 / 32.9 ❌ (596)

4 or more flights per hour

509 / 16.4 ❌ (201)

9 or more flights per hour

458 / 14.8 ❌ (74)

Departures between 1.5k and 15k feet

16 / 0.5 / 0.0 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

42 / 1.4

Between 1am and 2am

38 / 1.2

Between 2am and 3am

22 / 0.7

Between 3am and 4am

9 / 0.3

Between 4am and 5am

138 / 4.5

Between 5am and 6am

237 / 7.6

Between 6am and 7am

1,046 / 33.7

Between 7am and 8am

1,005 / 32.4

Between 8am and 9pm

14,911 / 481.0 / 34.4

Between 10pm and 11pm

737 / 23.8

Between 11pm and Midnight

127 / 4.1

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

46 ❌ (31)

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

49 ❌ (43)

Minimum avg. distance in miles

0.53

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

570.0 / 275.0 / 30.0 ❌ (67)

Flight holding stack identified?

No

Altitude for all flights

3,862 ❌ (17,557)

Altitude of departures between 1.5k and 15k feet

3,116 ❌ (8,452)

Altitude of flights below 20k feet

2,613 ❌ (8,825)

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

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

56.50

Thursdays between 11:00 and 12:00 - 4 time(s) in 4 weeks. Approx:35 flight events.

55.80

Wednesdays between 20:00 and 21:00 - 4 time(s) in 4 weeks. Approx:34 flight events.

55.60

Thursdays between 10:00 and 11:00 - 4 time(s) in 4 weeks. Approx:34 flight events.

53.40

Thursdays between 15:00 and 16:00 - 4 time(s) in 4 weeks. Approx:33 flight events.

52.50

Thursdays between 16:00 and 17:00 - 4 time(s) in 4 weeks. Approx:32 flight events.

52.30

Thursdays between 18:00 and 19:00 - 4 time(s) in 4 weeks. Approx:32 flight events.

47.40

Saturdays between 16:00 and 17:00 - 4 time(s) in 4 weeks. Approx:29 flight events.

44.50

Saturdays between 13:00 and 14:00 - 4 time(s) in 4 weeks. Approx:27 flight events.

38.20

Wednesdays between 14:00 and 15:00 - 4 time(s) in 4 weeks. Approx:23 flight events.