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

05/02/2025 12:30:14

UK Postcode

NORTH-MARDEN , WEST SUSSEX , PO18 9JX

Baseline geo-coordinates

50.9493 , -0.849599

Survey type

31 days prior to: 01-Sep-2024 @00:57:56

Assessment band

INTERMITTENT

Assessment actual value

4.98

Assessment description

Will encounter some day-time noise disturbances that are caused by the volumes of planes overflying Also expect a possible visual impact too.

Band range

Lower: 4.0 --> Upper: 7.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

2,354 / 75.9 / 4.5 ✔

Flights above 26k feet.

1,703 / 54.9 / 3.2 ❌ (760)

Flights between 16k and 26k feet

71 / 2.3 / 0.1 ✔

Flights between 13k and 15k feet

162 / 5.2 / 0.3 ✔

Flights between 7k and 12k feet

249 / 8.0 / 0.5 ✔

Flights between 6k and 7k feet

15 / 0.5 / 0.0 ✔

Flights between 5k and 6k feet

2 / 0.1 / 0.0 ✔

Flights between 4k and 5k feet

6 / 0.2 / 0.0 ✔

Flights between 3k and 4k feet

24 / 0.8 / 0.0 ✔

Flights below 3k feet

122 / 3.9 / 0.2 ✔

4 or more flights per hour

19 / 0.6 ✔

9 or more flights per hour

0 / 0.0 ✔

Departures between 1.5k and 15k feet

154 / 5.0 / 0.3 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

14 / 0.5

Between 1am and 2am

9 / 0.3

Between 2am and 3am

4 / 0.1

Between 3am and 4am

5 / 0.2

Between 4am and 5am

8 / 0.3

Between 5am and 6am

20 / 0.6

Between 6am and 7am

119 / 3.8

Between 7am and 8am

130 / 4.2

Between 8am and 9pm

1,861 / 60.0 / 4.3

Between 10pm and 11pm

92 / 3.0

Between 11pm and Midnight

43 / 1.4

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

16 ✔

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

35 ✔

Minimum avg. distance in miles

0.57

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

10.0 / 4.0 / 0.5 ✔

Flight holding stack identified?

No

Altitude for all flights

27,020 ✔

Altitude of departures between 1.5k and 15k feet

10,979 ✔

Altitude of flights below 20k feet

10,244 ✔

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

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

4.00

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

3.13

Saturdays between 17:00 and 18:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

5.17

Thursdays between 11:00 and 12:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

5.00

Wednesdays between 14:00 and 15:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

4.17

Sundays between 14:00 and 15:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

3.50

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

3.17

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

3.00

Fridays between 18:00 and 19:00 - 3 time(s) in 4 weeks. Approx:2 flight events.