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

27/03/2025 21:44:31

UK Postcode

HOLLINGBURY-SUMMER24-3M , EAST SUSSEX , BN1 6PY

Baseline geo-coordinates

50.8502 , -0.148114

Survey type

31 days prior to: 31-Aug-2024 @23:53:19

Assessment band

FREQUENT

Assessment actual value

13.01

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

7,424 / 239.5 / 14.1 ❌ (3,197)

Flights above 26k feet.

1,815 / 58.5 / 3.4 ❌ (760)

Flights between 16k and 26k feet

1,359 / 43.8 / 2.6 ❌ (349)

Flights between 13k and 15k feet

316 / 10.2 / 0.6 ❌ (178)

Flights between 7k and 12k feet

3,521 / 113.6 / 6.7 ❌ (547)

Flights between 6k and 7k feet

10 / 0.3 / 0.0 ✔

Flights between 5k and 6k feet

2 / 0.1 / 0.0 ✔

Flights between 4k and 5k feet

15 / 0.5 / 0.0 ✔

Flights between 3k and 4k feet

46 / 1.5 / 0.1 ✔

Flights below 3k feet

340 / 11.0 / 0.6 ✔

4 or more flights per hour

556 / 17.9 ❌ (204)

9 or more flights per hour

321 / 10.4 ❌ (77)

Departures between 1.5k and 15k feet

188 / 6.1 / 0.4 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

96 / 3.1

Between 1am and 2am

100 / 3.2

Between 2am and 3am

53 / 1.7

Between 3am and 4am

40 / 1.3

Between 4am and 5am

33 / 1.1

Between 5am and 6am

73 / 2.4

Between 6am and 7am

259 / 8.4

Between 7am and 8am

549 / 17.7

Between 8am and 9pm

5,759 / 185.8 / 13.3

Between 10pm and 11pm

234 / 7.5

Between 11pm and Midnight

189 / 6.1

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

117 ❌ (30)

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

47 ❌ (44)

Minimum avg. distance in miles

1.69

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

155.0 / 72.0 / 8.2 ❌ (68)

Flight holding stack identified?

Yes ❌

Altitude for all flights

17,708 ✔

Altitude of departures between 1.5k and 15k feet

11,331 ✔

Altitude of flights below 20k feet

10,838 ✔

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

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

19.80

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

18.20

Fridays between 16:00 and 17:00 - 4 time(s) in 4 weeks. Approx:13 flight events.

17.60

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

17.10

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

15.60

Saturdays between 15:00 and 16:00 - 4 time(s) in 4 weeks. Approx:11 flight events.

15.40

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