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

16/08/2025 06:58:50

UK Postcode

FORTUNE-GREEN-3SJ-0824 , LONDON , NW2 3SJ

Baseline geo-coordinates

51.5539 , -0.202671

Survey type

31 days prior to: 31-Aug-2024 @23:46:29

Assessment band

REGULAR

Assessment actual value

11.11

Assessment description

Will encounter some 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: 7.0 --> Upper: 12.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

2,078 / 67.0 / 3.9 ✔

Flights above 26k feet.

687 / 22.2 / 1.3 ✔

Flights between 16k and 26k feet

226 / 7.3 / 0.4 ✔

Flights between 13k and 15k feet

247 / 8.0 / 0.5 ❌ (178)

Flights between 7k and 12k feet

177 / 5.7 / 0.3 ✔

Flights between 6k and 7k feet

108 / 3.5 / 0.2 ✔

Flights between 5k and 6k feet

446 / 14.4 / 0.8 ❌ (229)

Flights between 4k and 5k feet

161 / 5.2 / 0.3 ✔

Flights between 3k and 4k feet

7 / 0.2 / 0.0 ✔

Flights below 3k feet

19 / 0.6 / 0.0 ✔

4 or more flights per hour

105 / 3.4 ✔

9 or more flights per hour

33 / 1.1 ✔

Departures between 1.5k and 15k feet

619 / 20.0 / 1.2 ❌ (407)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

57 / 1.8

Between 1am and 2am

45 / 1.5

Between 2am and 3am

21 / 0.7

Between 3am and 4am

15 / 0.5

Between 4am and 5am

24 / 0.8

Between 5am and 6am

25 / 0.8

Between 6am and 7am

65 / 2.1

Between 7am and 8am

114 / 3.7

Between 8am and 9pm

1,545 / 49.8 / 3.6

Between 10pm and 11pm

85 / 2.7

Between 11pm and Midnight

61 / 2.0

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

17 ✔

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

44 ❌ (44)

Minimum avg. distance in miles

0.49

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

31.0 / 14.0 / 1.6 ✔

Flight holding stack identified?

No

Altitude for all flights

17,762 ✔

Altitude of departures between 1.5k and 15k feet

5,361 ❌ (8,431)

Altitude of flights below 20k feet

8,533 ❌ (8,792)

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

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

3.90

Wednesdays between 8:00 and 9:00- 4 time(s) in 4 weeks. Approx:3 flight events.

14.13

Wednesdays between 14:00 and 15:00 - 4 time(s) in 4 weeks. Approx:8 flight events.

11.75

Wednesdays between 11:00 and 12:00 - 4 time(s) in 4 weeks. Approx:7 flight events.

6.13

Saturdays between 12:00 and 13:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

4.88

Wednesdays between 6:00 and 7:00- 4 time(s) in 4 weeks. Approx:3 flight events.

18.17

Wednesdays between 13:00 and 14:00 - 3 time(s) in 4 weeks. Approx:9 flight events.

10.17

Wednesdays between 9:00 and 10:00- 3 time(s) in 4 weeks. Approx:6 flight events.

9.00

Wednesdays between 15:00 and 16:00 - 3 time(s) in 4 weeks. Approx:5 flight events.