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 18:22:27

UK Postcode

WEST-CHILTINGTON , WEST SUSSEX , RH20 2JW

Baseline geo-coordinates

50.9556 , -0.448877

Survey type

31 days prior to: 01-Sep-2024 @00:54:59

Assessment band

INTERMITTENT

Assessment actual value

5.24

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

1,888 / 60.9 / 3.6 ✔

Flights above 26k feet.

764 / 24.6 / 1.4 ❌ (760)

Flights between 16k and 26k feet

345 / 11.1 / 0.7 ✔

Flights between 13k and 15k feet

248 / 8.0 / 0.5 ❌ (178)

Flights between 7k and 12k feet

414 / 13.4 / 0.8 ✔

Flights between 6k and 7k feet

31 / 1.0 / 0.1 ✔

Flights between 5k and 6k feet

17 / 0.5 / 0.0 ✔

Flights between 4k and 5k feet

0 ❌ (407)

Flights between 3k and 4k feet

0 ❌ (407)

Flights below 3k feet

69 / 2.2 / 0.1 ✔

4 or more flights per hour

78 / 2.5 ✔

9 or more flights per hour

1 / 0.0 ✔

Departures between 1.5k and 15k feet

503 / 16.2 / 1.0 ❌ (407)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

11 / 0.4

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

6 / 0.2

Between 5am and 6am

15 / 0.5

Between 6am and 7am

96 / 3.1

Between 7am and 8am

180 / 5.8

Between 8am and 9pm

1,439 / 46.4 / 3.3

Between 10pm and 11pm

48 / 1.5

Between 11pm and Midnight

25 / 0.8

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

38 ✔

Minimum avg. distance in miles

0.49

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

20.0 / 8.0 / 1.1 ✔

Flight holding stack identified?

No

Altitude for all flights

21,712 ✔

Altitude of departures between 1.5k and 15k feet

12,032 ✔

Altitude of flights below 20k feet

12,674 ✔

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

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

4.30

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

4.00

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

3.50

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

3.25

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

6.50

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

6.33

Tuesdays between 9:00 and 10:00- 3 time(s) in 4 weeks. Approx:5 flight events.

6.17

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

5.83

Sundays between 16:00 and 17:00 - 3 time(s) in 4 weeks. Approx:4 flight events.