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

14/02/2025 18:14:46

UK Postcode

ALFRISTON-5XL-0824-3M , EAST SUSSEX , BN26 5XL

Baseline geo-coordinates

50.8071 , 0.150951

Survey type

31 days prior to: 01-Sep-2024 @00:44:48

Assessment band

INTERMITTENT

Assessment actual value

6.89

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

2,507 / 80.9 / 4.8 ✔

Flights above 26k feet.

1,223 / 39.5 / 2.3 ❌ (747)

Flights between 16k and 26k feet

518 / 16.7 / 1.0 ❌ (355)

Flights between 13k and 15k feet

56 / 1.8 / 0.1 ✔

Flights between 7k and 12k feet

361 / 11.6 / 0.7 ✔

Flights between 6k and 7k feet

8 / 0.3 / 0.0 ✔

Flights between 5k and 6k feet

11 / 0.4 / 0.0 ✔

Flights between 4k and 5k feet

27 / 0.9 / 0.1 ✔

Flights between 3k and 4k feet

49 / 1.6 / 0.1 ✔

Flights below 3k feet

254 / 8.2 / 0.5 ✔

4 or more flights per hour

121 / 3.9 ✔

9 or more flights per hour

10 / 0.3 ✔

Departures between 1.5k and 15k feet

308 / 9.9 / 0.6 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

33 / 1.1

Between 1am and 2am

29 / 0.9

Between 2am and 3am

32 / 1.0

Between 3am and 4am

28 / 0.9

Between 4am and 5am

17 / 0.5

Between 5am and 6am

7 / 0.2

Between 6am and 7am

124 / 4.0

Between 7am and 8am

185 / 6.0

Between 8am and 9pm

1,942 / 62.6 / 4.5

Between 10pm and 11pm

50 / 1.6

Between 11pm and Midnight

36 / 1.2

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

74 ❌ (31)

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

46 ❌ (43)

Minimum avg. distance in miles

2.11

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

23.0 / 11.0 / 1.2 ✔

Flight holding stack identified?

Yes ❌

Altitude for all flights

22,620 ✔

Altitude of departures between 1.5k and 15k feet

8,905 ✔

Altitude of flights below 20k feet

7,764 ❌ (8,833)

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

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

5.25

Saturdays between 10:00 and 11:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

5.00

Fridays between 14:00 and 15:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

4.75

Fridays between 17:00 and 18:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

7.83

Sundays between 14:00 and 15:00 - 3 time(s) in 4 weeks. Approx:4 flight events.

7.50

Sundays between 11:00 and 12:00 - 3 time(s) in 4 weeks. Approx:4 flight events.

7.00

Wednesdays between 11:00 and 12:00 - 3 time(s) in 4 weeks. Approx:4 flight events.

6.33

Fridays between 15:00 and 16:00 - 3 time(s) in 4 weeks. Approx:3 flight events.