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

07/04/2024 16:36:12

UK Postcode

ALFRISTON , EAST SUSSEX , BN26 5TD

Baseline geo-coordinates

50.8064 , 0.156348

Survey type

31 days from the 1st date shown in the Evidence table below .

Assessment band

MINIMAL

Assessment actual value

3.51

Assessment description

Sound equates to a quiet country lane i.e. irregular and low volume traffic. However, occasionally some of the flights could be below 7000 feet and could occur at evenings and weekends.

Band range

Lower: 0.0 --> Upper: 4.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

328 / 10.6 / 0.6 ✔

Flights above 26k feet.

78 / 2.5 / 0.1 ✔

Flights between 16k and 26k feet

94 / 3.0 / 0.2 ✔

Flights between 13k and 15k feet

9 / 0.3 / 0.0 ✔

Flights between 7k and 12k feet

32 / 1.0 / 0.1 ✔

Flights between 6k and 7k feet

0 ✔

Flights between 5k and 6k feet

0 ✔

Flights between 4k and 5k feet

2 / 0.1 / 0.0 ✔

Flights between 3k and 4k feet

10 / 0.3 / 0.0 ✔

Flights below 3k feet

103 / 3.3 / 0.2 ✔

4 or more flights per hour

2 / 0.1 ✔

9 or more flights per hour

0 / 0.0 ✔

Departures between 1.5k and 15k feet

17 / 0.5 / 0.0 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

2 / 0.1

1 AM

9 / 0.3

2 AM

19 / 0.6

3 AM

6 / 0.2

4 AM

7 / 0.2

5 AM

2 / 0.1

6 AM

8 / 0.3

7 AM

28 / 0.9

8 AM to 9 PM

232 / 7.5 / 0.5

10 PM

3 / 0.1

11 PM

4 / 0.1

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

26 ❌ (22)

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

29 ✔

Minimum avg. distance in miles

0.44

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

3.0 / 1.0 / 0.2 ✔

Flight holding stack identified?

No

Altitude for all flights

16,916 ✔

Altitude of departures between 1.5k and 15k feet

5,199 ❌ (7,809)

Altitude of flights below 20k feet

6,150 ❌ (8,007)

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

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

4.75

Tuesday @ 16:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

3.75

Friday @ 16:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

3.50

Tuesday @ 17:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

2.75

Sunday @ 17:00 - 2 time(s) in 4 weeks. Approx:2 flight events.

8.00

Thursday @ 2:00 - 1 time(s) in 4 weeks. Approx:6 flight events.

6.00

Thursday @ 3:00 - 1 time(s) in 4 weeks. Approx:4 flight events.

4.50

Tuesday @ 18:00 - 1 time(s) in 4 weeks. Approx:3 flight events.