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 07:56:36

UK Postcode

AMBERLEY , WEST SUSSEX , BN18 9NA

Baseline geo-coordinates

50.9075 , -0.534352

Survey type

31 days prior to: 01-Sep-2024 @00:16:53

Assessment band

INTERMITTENT

Assessment actual value

5.98

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

2,209 / 71.3 / 4.2 ✔

Flights above 26k feet.

968 / 31.2 / 1.8 ❌ (755)

Flights between 16k and 26k feet

237 / 7.6 / 0.4 ✔

Flights between 13k and 15k feet

300 / 9.7 / 0.6 ❌ (179)

Flights between 7k and 12k feet

486 / 15.7 / 0.9 ✔

Flights between 6k and 7k feet

22 / 0.7 / 0.0 ✔

Flights between 5k and 6k feet

5 / 0.2 / 0.0 ✔

Flights between 4k and 5k feet

1 / 0.0 / 0.0 ✔

Flights between 3k and 4k feet

12 / 0.4 / 0.0 ✔

Flights below 3k feet

178 / 5.7 / 0.3 ✔

4 or more flights per hour

117 / 3.8 ✔

9 or more flights per hour

2 / 0.1 ✔

Departures between 1.5k and 15k feet

526 / 17.0 / 1.0 ❌ (399)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

16 / 0.5

Between 1am and 2am

12 / 0.4

Between 2am and 3am

6 / 0.2

Between 3am and 4am

10 / 0.3

Between 4am and 5am

24 / 0.8

Between 5am and 6am

19 / 0.6

Between 6am and 7am

103 / 3.3

Between 7am and 8am

188 / 6.1

Between 8am and 9pm

1,715 / 55.3 / 4.0

Between 10pm and 11pm

59 / 1.9

Between 11pm and Midnight

28 / 0.9

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

79 ❌ (30)

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

34 ✔

Minimum avg. distance in miles

0.46

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

28.0 / 10.0 / 1.5 ✔

Flight holding stack identified?

No

Altitude for all flights

21,791 ✔

Altitude of departures between 1.5k and 15k feet

12,348 ✔

Altitude of flights below 20k feet

11,328 ✔

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

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

7.60

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

4.80

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

8.50

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

7.13

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

6.63

Wednesdays between 14:00 and 15:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

6.38

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

5.88

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