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

16/02/2025 00:07:04

UK Postcode

WEST-BLATCHINGTON-0824-3M , EAST SUSSEX , BN3 6WW

Baseline geo-coordinates

50.851 , -0.17662

Survey type

31 days prior to: 31-Aug-2024 @23:53:08

Assessment band

FREQUENT

Assessment actual value

13.44

Assessment description

Likely to encounter both 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: 12.0 --> Upper: 16.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

8,039 / 259.3 / 15.3 ❌ (3,197)

Flights above 26k feet.

1,948 / 62.8 / 3.7 ❌ (760)

Flights between 16k and 26k feet

1,526 / 49.2 / 2.9 ❌ (349)

Flights between 13k and 15k feet

465 / 15.0 / 0.9 ❌ (178)

Flights between 7k and 12k feet

3,689 / 119.0 / 7.0 ❌ (547)

Flights between 6k and 7k feet

11 / 0.4 / 0.0 ✔

Flights between 5k and 6k feet

1 / 0.0 / 0.0 ✔

Flights between 4k and 5k feet

12 / 0.4 / 0.0 ✔

Flights between 3k and 4k feet

44 / 1.4 / 0.1 ✔

Flights below 3k feet

343 / 11.1 / 0.7 ✔

4 or more flights per hour

582 / 18.8 ❌ (204)

9 or more flights per hour

368 / 11.9 ❌ (77)

Departures between 1.5k and 15k feet

284 / 9.2 / 0.5 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

104 / 3.4

Between 1am and 2am

97 / 3.1

Between 2am and 3am

55 / 1.8

Between 3am and 4am

39 / 1.3

Between 4am and 5am

36 / 1.2

Between 5am and 6am

79 / 2.5

Between 6am and 7am

323 / 10.4

Between 7am and 8am

610 / 19.7

Between 8am and 9pm

6,148 / 198.3 / 14.2

Between 10pm and 11pm

273 / 8.8

Between 11pm and Midnight

221 / 7.1

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

105 ❌ (30)

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

48 ❌ (44)

Minimum avg. distance in miles

1.61

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

170.0 / 82.0 / 8.9 ❌ (68)

Flight holding stack identified?

Yes ❌

Altitude for all flights

17,820 ✔

Altitude of departures between 1.5k and 15k feet

11,948 ✔

Altitude of flights below 20k feet

11,156 ✔

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

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

20.10

Fridays between 16:00 and 17:00 - 4 time(s) in 4 weeks. Approx:14 flight events.

20.00

Thursdays between 13:00 and 14:00 - 4 time(s) in 4 weeks. Approx:14 flight events.

18.90

Wednesdays between 15:00 and 16:00 - 4 time(s) in 4 weeks. Approx:13 flight events.

17.90

Saturdays between 14:00 and 15:00 - 4 time(s) in 4 weeks. Approx:13 flight events.

17.30

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

16.90

Fridays between 17:00 and 18:00 - 4 time(s) in 4 weeks. Approx:12 flight events.

16.40

Saturdays between 15:00 and 16:00 - 4 time(s) in 4 weeks. Approx:12 flight events.

15.90

Thursdays between 9:00 and 10:00- 4 time(s) in 4 weeks. Approx:11 flight events.