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

10/05/2023 09:07:25

UK Postcode

SOUTH_HARTING , WEST SUSSEX , GU30 7JN

Baseline geo-coordinates

51.0493 , -0.815563

Survey type

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

Assessment band

INTERMITTENT

Assessment actual value

6.51

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

2,942 / 94.9 / 5.6 ✔

Flights above 26k feet.

1,470 / 47.4 / 2.8 ❌ (656)

Flights between 16k and 26k feet

168 / 5.4 / 0.3 ✔

Flights between 13k and 15k feet

301 / 9.7 / 0.6 ❌ (152)

Flights between 7k and 12k feet

911 / 29.4 / 1.7 ❌ (432)

Flights between 6k and 7k feet

5 / 0.2 / 0.0 ✔

Flights between 5k and 6k feet

24 / 0.8 / 0.0 ✔

Flights between 4k and 5k feet

18 / 0.6 / 0.0 ✔

Flights between 3k and 4k feet

1 / 0.0 / 0.0 ✔

Flights below 3k feet

44 / 1.4 / 0.1 ✔

4 or more flights per hour

157 / 5.1 ✔

9 or more flights per hour

7 / 0.2 ✔

Departures between 1.5k and 15k feet

493 / 15.9 / 0.9 ❌ (390)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

10 / 0.3

1 AM

4 / 0.1

2 AM

5 / 0.2

3 AM

4 / 0.1

4 AM

1 / 0.0

5 AM

22 / 0.7

6 AM

167 / 5.4

7 AM

219 / 7.1

8 AM to 9 PM

2,393 / 77.2 / 5.5

10 PM

72 / 2.3

11 PM

17 / 0.5

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

15 ✔

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

43 ✔

Minimum avg. distance in miles

0.39

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

35.0 / 15.0 / 1.8 ✔

Flight holding stack identified?

No

Altitude for all flights

23,057 ✔

Altitude of departures between 1.5k and 15k feet

11,893 ✔

Altitude of flights below 20k feet

12,102 ✔

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

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

3.70

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

8.50

Saturday @ 14:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

7.63

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

6.50

Monday @ 12:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

6.00

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

5.50

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

5.38

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

5.00

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

4.75

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