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

07/02/2025 16:13:41

UK Postcode

WESTDENE , EAST SUSSEX , BN1 5EJ

Baseline geo-coordinates

50.8618 , -0.156743

Survey type

31 days prior to: 31-Aug-2024 @23:04:11

Assessment band

INTERMITTENT

Assessment actual value

6.35

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

2,407 / 77.6 / 4.6 ✔

Flights above 26k feet.

887 / 28.6 / 1.7 ❌ (747)

Flights between 16k and 26k feet

406 / 13.1 / 0.8 ❌ (355)

Flights between 13k and 15k feet

104 / 3.4 / 0.2 ✔

Flights between 7k and 12k feet

850 / 27.4 / 1.6 ❌ (544)

Flights between 6k and 7k feet

2 / 0.1 / 0.0 ✔

Flights between 5k and 6k feet

0 ✔

Flights between 4k and 5k feet

7 / 0.2 / 0.0 ✔

Flights between 3k and 4k feet

18 / 0.6 / 0.0 ✔

Flights below 3k feet

133 / 4.3 / 0.3 ✔

4 or more flights per hour

147 / 4.7 ✔

9 or more flights per hour

6 / 0.2 ✔

Departures between 1.5k and 15k feet

56 / 1.8 / 0.1 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

22 / 0.7

Between 1am and 2am

33 / 1.1

Between 2am and 3am

10 / 0.3

Between 3am and 4am

12 / 0.4

Between 4am and 5am

16 / 0.5

Between 5am and 6am

31 / 1.0

Between 6am and 7am

111 / 3.6

Between 7am and 8am

215 / 6.9

Between 8am and 9pm

1,833 / 59.1 / 4.2

Between 10pm and 11pm

74 / 2.4

Between 11pm and Midnight

42 / 1.4

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

44 ❌ (43)

Minimum avg. distance in miles

0.52

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

30.0 / 13.0 / 1.6 ✔

Flight holding stack identified?

Yes ❌

Altitude for all flights

20,579 ✔

Altitude of departures between 1.5k and 15k feet

11,209 ✔

Altitude of flights below 20k feet

10,680 ✔

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

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

6.40

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

5.50

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

5.10

Fridays between 12:00 and 13:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

3.00

Thursdays between 20:00 and 21:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

7.63

Fridays between 17:00 and 18:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

7.25

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

6.88

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

6.13

Wednesdays between 13:00 and 14:00 - 4 time(s) in 4 weeks. Approx:5 flight events.