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 20:41:19

UK Postcode

ALFRISTON-5XL-0225-3M , EAST SUSSEX , BN26 5XL

Baseline geo-coordinates

50.8071 , 0.150951

Survey type

31 days prior to: 14-Feb-2025 @17:34:51

Assessment band

INTERMITTENT

Assessment actual value

5.68

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

1,901 / 61.3 / 3.6 ✔

Flights above 26k feet.

999 / 32.2 / 1.9 ❌ (755)

Flights between 16k and 26k feet

474 / 15.3 / 0.9 ❌ (350)

Flights between 13k and 15k feet

91 / 2.9 / 0.2 ✔

Flights between 7k and 12k feet

272 / 8.8 / 0.5 ✔

Flights between 6k and 7k feet

3 / 0.1 / 0.0 ✔

Flights between 5k and 6k feet

3 / 0.1 / 0.0 ✔

Flights between 4k and 5k feet

13 / 0.4 / 0.0 ✔

Flights between 3k and 4k feet

11 / 0.4 / 0.0 ✔

Flights below 3k feet

35 / 1.1 / 0.1 ✔

4 or more flights per hour

68 / 2.2 ✔

9 or more flights per hour

1 / 0.0 ✔

Departures between 1.5k and 15k feet

243 / 7.8 / 0.5 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

6 / 0.2

Between 1am and 2am

12 / 0.4

Between 2am and 3am

15 / 0.5

Between 3am and 4am

11 / 0.4

Between 4am and 5am

8 / 0.3

Between 5am and 6am

8 / 0.3

Between 6am and 7am

100 / 3.2

Between 7am and 8am

190 / 6.1

Between 8am and 9pm

1,447 / 46.7 / 3.3

Between 10pm and 11pm

61 / 2.0

Between 11pm and Midnight

32 / 1.0

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

47 ❌ (30)

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

44 ❌ (43)

Minimum avg. distance in miles

2.10

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

10.0 / 5.0 / 0.5 ✔

Flight holding stack identified?

Yes ❌

Altitude for all flights

25,073 ✔

Altitude of departures between 1.5k and 15k feet

10,821 ✔

Altitude of flights below 20k feet

11,399 ✔

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

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

5.00

Sundays between 16:00 and 17:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

10.25

Sundays between 8:00 and 9:00- 2 time(s) in 4 weeks. Approx:7 flight events.

8.75

Thursdays between 9:00 and 10:00- 2 time(s) in 4 weeks. Approx:7 flight events.

8.00

Saturdays between 7:00 and 8:00- 2 time(s) in 4 weeks. Approx:6 flight events.

6.75

Fridays between 8:00 and 9:00- 2 time(s) in 4 weeks. Approx:4 flight events.

6.50

Fridays between 14:00 and 15:00 - 2 time(s) in 4 weeks. Approx:4 flight events.

6.25

Thursdays between 8:00 and 9:00- 2 time(s) in 4 weeks. Approx:4 flight events.

6.00

Saturdays between 22:00 and 23:00 - 2 time(s) in 4 weeks. Approx:4 flight events.