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

10/05/2025 22:37:06

UK Postcode

BARNET , LONDON , EN5 2HX

Baseline geo-coordinates

51.6488 , -0.200492

Survey type

31 days prior to: 10-May-2025 @00:34:36

Assessment band

HIGH

Assessment actual value

16.64

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

6,594 / 212.7 / 12.5 ❌ (3,220)

Flights above 26k feet.

675 / 21.8 / 1.3 ✔

Flights between 16k and 26k feet

517 / 16.7 / 1.0 ❌ (350)

Flights between 13k and 15k feet

2,684 / 86.6 / 5.1 ❌ (179)

Flights between 7k and 12k feet

1,722 / 55.5 / 3.3 ❌ (547)

Flights between 6k and 7k feet

354 / 11.4 / 0.7 ❌ (155)

Flights between 5k and 6k feet

468 / 15.1 / 0.9 ❌ (227)

Flights between 4k and 5k feet

30 / 1.0 / 0.1 ✔

Flights between 3k and 4k feet

51 / 1.6 / 0.1 ✔

Flights below 3k feet

93 / 3.0 / 0.2 ✔

4 or more flights per hour

526 / 17.0 ❌ (206)

9 or more flights per hour

343 / 11.1 ❌ (78)

Departures between 1.5k and 15k feet

598 / 19.3 / 1.1 ❌ (399)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

73 / 2.4

Between 1am and 2am

20 / 0.6

Between 2am and 3am

10 / 0.3

Between 3am and 4am

8 / 0.3

Between 4am and 5am

11 / 0.4

Between 5am and 6am

19 / 0.6

Between 6am and 7am

207 / 6.7

Between 7am and 8am

309 / 10.0

Between 8am and 9pm

5,471 / 176.5 / 12.6

Between 10pm and 11pm

275 / 8.9

Between 11pm and Midnight

180 / 5.8

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

18 ✔

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

42 ✔

Minimum avg. distance in miles

0.56

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

182.0 / 78.0 / 9.6 ❌ (69)

Flight holding stack identified?

No

Altitude for all flights

14,005 ❌ (17,466)

Altitude of departures between 1.5k and 15k feet

7,124 ❌ (8,466)

Altitude of flights below 20k feet

11,288 ✔

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

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

26.30

Fridays between 11:00 and 12:00 - 4 time(s) in 4 weeks. Approx:18 flight events.

23.30

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

23.00

Thursdays between 17:00 and 18:00 - 4 time(s) in 4 weeks. Approx:14 flight events.

22.80

Wednesdays between 14:00 and 15:00 - 4 time(s) in 4 weeks. Approx:16 flight events.

22.70

Thursdays between 11:00 and 12:00 - 4 time(s) in 4 weeks. Approx:16 flight events.

22.40

Fridays between 13:00 and 14:00 - 4 time(s) in 4 weeks. Approx:15 flight events.

22.20

Fridays between 12:00 and 13:00 - 4 time(s) in 4 weeks. Approx:16 flight events.

21.80

Thursdays between 13:00 and 14:00 - 4 time(s) in 4 weeks. Approx:15 flight events.

21.20

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