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 23:40:11

UK Postcode

MARSH-BARN , WEST SUSSEX , BN15 8LW

Baseline geo-coordinates

50.8232 , -0.307973

Survey type

31 days prior to: 31-Aug-2024 @23:00:52

Assessment band

INTERMITTENT

Assessment actual value

6.14

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

2,363 / 76.2 / 4.5 ✔

Flights above 26k feet.

613 / 19.8 / 1.2 ✔

Flights between 16k and 26k feet

616 / 19.9 / 1.2 ❌ (354)

Flights between 13k and 15k feet

306 / 9.9 / 0.6 ❌ (178)

Flights between 7k and 12k feet

693 / 22.4 / 1.3 ❌ (539)

Flights between 6k and 7k feet

0 ✔

Flights between 5k and 6k feet

4 / 0.1 / 0.0 ✔

Flights between 4k and 5k feet

8 / 0.3 / 0.0 ✔

Flights between 3k and 4k feet

20 / 0.6 / 0.0 ✔

Flights below 3k feet

103 / 3.3 / 0.2 ✔

4 or more flights per hour

190 / 6.1 ✔

9 or more flights per hour

7 / 0.2 ✔

Departures between 1.5k and 15k feet

240 / 7.7 / 0.5 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

18 / 0.6

Between 1am and 2am

24 / 0.8

Between 2am and 3am

17 / 0.5

Between 3am and 4am

6 / 0.2

Between 4am and 5am

9 / 0.3

Between 5am and 6am

32 / 1.0

Between 6am and 7am

121 / 3.9

Between 7am and 8am

164 / 5.3

Between 8am and 9pm

1,802 / 58.1 / 4.2

Between 10pm and 11pm

83 / 2.7

Between 11pm and Midnight

56 / 1.8

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

24 ✔

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

46 ❌ (43)

Minimum avg. distance in miles

0.48

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

38.0 / 18.0 / 2.0 ✔

Flight holding stack identified?

No

Altitude for all flights

19,012 ✔

Altitude of departures between 1.5k and 15k feet

13,008 ✔

Altitude of flights below 20k feet

12,703 ✔

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

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

5.40

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

5.20

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

7.88

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

7.63

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

7.50

Saturdays between 18:00 and 19:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

6.50

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

6.38

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

6.13

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

6.00

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