Assessment ScoreCard – 31 Day

Aircraft Traffic Assessment: 31 Day Scorecard



The symbol indicates the measure is better than the average when compared with other assessed
UK postcodes. The ❌ represents the opposite. Assessed averages are shown in brackets.

See: for a full explanation about the Assessment scorecard.

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.

Our scorecard is designed to provide a greater understanding how the assessment was reached for your selected UK post code. To enable you to validate our assessment we also provide up to 10 occurrences when we believe the disruption will be at its highest.

For those that would like to perform their own analysis we can also provide the low level flight data that includes the length of time a plane existed inside your select airspace bubble.



Evidence by associated Airport – indicative only: NORTH-BARNES

UK Airport Count of Flights Percentage of Total
LONDON HEATHROW AIRPORT1727993.5
TRANSATLANTIC FLIGHT?4542.5