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

04/02/2025 19:01:01

UK Postcode

SELSFIELD-COMMON , WEST SUSSEX , RH19 4LJ

Baseline geo-coordinates

51.0892 , -0.056637

Survey type

31 days prior to: 01-Sep-2024 @00:12:48

Assessment band

REGULAR

Assessment actual value

8.19

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

1,083 / 34.9 / 2.1 ✔

Flights above 26k feet.

465 / 15.0 / 0.9 ✔

Flights between 16k and 26k feet

29 / 0.9 / 0.1 ✔

Flights between 13k and 15k feet

8 / 0.3 / 0.0 ✔

Flights between 7k and 12k feet

92 / 3.0 / 0.2 ✔

Flights between 6k and 7k feet

79 / 2.5 / 0.1 ✔

Flights between 5k and 6k feet

152 / 4.9 / 0.3 ✔

Flights between 4k and 5k feet

239 / 7.7 / 0.5 ✔

Flights between 3k and 4k feet

13 / 0.4 / 0.0 ✔

Flights below 3k feet

6 / 0.2 / 0.0 ✔

4 or more flights per hour

54 / 1.7 ✔

9 or more flights per hour

5 / 0.2 ✔

Departures between 1.5k and 15k feet

382 / 12.3 / 0.7 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

24 / 0.8

Between 1am and 2am

30 / 1.0

Between 2am and 3am

13 / 0.4

Between 3am and 4am

9 / 0.3

Between 4am and 5am

6 / 0.2

Between 5am and 6am

20 / 0.6

Between 6am and 7am

62 / 2.0

Between 7am and 8am

69 / 2.2

Between 8am and 9pm

738 / 23.8 / 1.7

Between 10pm and 11pm

53 / 1.7

Between 11pm and Midnight

31 / 1.0

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

14 ✔

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

48 ❌ (43)

Minimum avg. distance in miles

0.68

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

16.0 / 8.0 / 0.8 ✔

Flight holding stack identified?

No

Altitude for all flights

18,840 ✔

Altitude of departures between 1.5k and 15k feet

4,944 ❌ (8,466)

Altitude of flights below 20k feet

6,101 ❌ (8,790)

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

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

5.33

Wednesdays between 21:00 and 22:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

3.00

Wednesdays between 9:00 and 10:00- 3 time(s) in 4 weeks. Approx:2 flight events.

12.25

Saturdays between 17:00 and 18:00 - 2 time(s) in 4 weeks. Approx:6 flight events.

12.00

Wednesdays between 7:00 and 8:00- 2 time(s) in 4 weeks. Approx:6 flight events.

10.50

Wednesdays between 16:00 and 17:00 - 2 time(s) in 4 weeks. Approx:6 flight events.

10.00

Wednesdays between 6:00 and 7:00- 2 time(s) in 4 weeks. Approx:5 flight events.

9.25

Wednesdays between 8:00 and 9:00- 2 time(s) in 4 weeks. Approx:5 flight events.

9.00

Mondays between 12:00 and 13:00 - 2 time(s) in 4 weeks. Approx:5 flight events.