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

30/01/2023 08:52:30

UK Postcode

HEATHFIELD , EAST SUSSEX , TN21 8JD

Baseline geo-coordinates

50.9674 , 0.22458

Survey type

31 Day. Based on the 31 days prior to the survey date shown above.

Assessment band

OCCASIONAL

Assessment actual value

6.30

Assessment description

Sound equates to a "C" road or an active country lane i.e. irregular traffic volumes. Location is on a flight route as opposed to a flight corridor. Some of the flights will be below 7000 feet and could occur at evenings and weekends.

Band range

Lower: 4.0 --> Upper: 7.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

1,149 / 37.1 / 2.2 ✔

Flights above 26k feet.

170 / 5.5 / 0.3 ✔

Flights between 16k and 26k feet

218 / 7.0 / 0.4 ❌ (175)

Flights between 13k and 15k feet

9 / 0.3 / 0.0 ✔

Flights between 7k and 12k feet

667 / 21.5 / 1.3 ❌ (228)

Flights between 6k and 7k feet

59 / 1.9 / 0.1 ✔

Flights between 5k and 6k feet

4 / 0.1 / 0.0 ✔

Flights between 4k and 5k feet

1 / 0.0 / 0.0 ✔

Flights between 3k and 4k feet

0 ✔

Flights below 3k feet

21 / 0.7 / 0.0 ✔

4 or more flights per hour

80 / 2.6 ✔

9 or more flights per hour

5 / 0.2 ✔

Departures between 1.5k and 15k feet

1 / 0.0 / 0.0 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

1 / 0.0

1 AM

3 / 0.1

2 AM

2 / 0.1

3 AM

3 / 0.1

4 AM

6 / 0.2

5 AM

12 / 0.4

6 AM

14 / 0.5

7 AM

59 / 1.9

8 AM to 9 PM

991 / 32.0 / 2.3

10 PM

38 / 1.2

11 PM

7 / 0.2

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

22 ❌ (22)

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

58 ❌ (41)

Minimum avg. distance in miles

0.40

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

19.0 / 12.0 / 1.0 ✔

Flight holding stack identified?

Yes ❌

Altitude for all flights

15,024 ❌ (16,135)

Altitude of departures between 1.5k and 15k feet

2,470 ❌ (7,666)

Altitude of flights below 20k feet

8,897 ✔

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

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

7.70

Saturday @ 11:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

7.13

Saturday @ 14:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

6.63

Saturday @ 13:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

5.00

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

4.50

Saturday @ 10:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

12.17

Saturday @ 12:00 - 3 time(s) in 4 weeks. Approx:8 flight events.

8.83

Sunday @ 15:00 - 3 time(s) in 4 weeks. Approx:6 flight events.

8.50

Monday @ 7:00 - 3 time(s) in 4 weeks. Approx:6 flight events.

7.17

Tuesday @ 18:00 - 3 time(s) in 4 weeks. Approx:5 flight events.