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

21/07/2022 13:56:55

UK Postcode

ASHINGTON , WEST SUSSEX , RH20 3DD

Baseline geo-coordinates

50.93 , -0.390753

Survey type

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

Assessment band

OCCASIONAL

Assessment actual value

5.26

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

1,549 / 50.0 / 2.9 ✔

Flights above 26k feet.

614 / 19.8 / 1.2 ✔

Flights between 16k and 26k feet

301 / 9.7 / 0.6 ✔

Flights between 13k and 15k feet

166 / 5.4 / 0.3 ❌ (135)

Flights between 7k and 12k feet

384 / 12.4 / 0.7 ✔

Flights between 6k and 7k feet

21 / 0.7 / 0.0 ✔

Flights between 5k and 6k feet

6 / 0.2 / 0.0 ✔

Flights between 4k and 5k feet

0 ✔

Flights between 3k and 4k feet

2 / 0.1 / 0.0 ✔

Flights below 3k feet

55 / 1.8 / 0.1 ✔

4 or more flights per hour

55 / 1.8 ✔

9 or more flights per hour

0 / 0.0 ✔

Departures between 1.5k and 15k feet

331 / 10.7 / 0.6 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

11 / 0.4

1 AM

10 / 0.3

2 AM

1 / 0.0

3 AM

1 / 0.0

4 AM

3 / 0.1

5 AM

10 / 0.3

6 AM

83 / 2.7

7 AM

138 / 4.5

8 AM to 9 PM

1,187 / 38.3 / 2.7

10 PM

36 / 1.2

11 PM

43 / 1.4

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

39 ✔

Minimum avg. distance in miles

0.43

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

15.0 / 6.0 / 0.8 ✔

Flight holding stack identified?

No

Altitude for all flights

21,595 ✔

Altitude of departures between 1.5k and 15k feet

12,027 ✔

Altitude of flights below 20k feet

12,602 ✔

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

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

5.38

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

3.88

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

6.67

Friday @ 9:00 - 3 time(s) in 4 weeks. Approx:5 flight events.

5.83

Wednesday @ 9:00 - 3 time(s) in 4 weeks. Approx:4 flight events.

5.50

Tuesday @ 9:00 - 3 time(s) in 4 weeks. Approx:4 flight events.

5.33

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

5.17

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

4.83

Thursday @ 19:00 - 3 time(s) in 4 weeks. Approx:3 flight events.