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

02/04/2022 16:58:52

UK Postcode

WINCHESTER-CENTRAL , HAMPSHIRE , SO23 8SL

Baseline geo-coordinates

51.0651 , -1.31726

Survey type

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

Assessment band

OCCASIONAL

Assessment actual value

4.55

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

1,176 / 37.9 / 2.2 ✔

Flights above 26k feet.

625 / 20.2 / 1.2 ✔

Flights between 16k and 26k feet

263 / 8.5 / 0.5 ✔

Flights between 13k and 15k feet

37 / 1.2 / 0.1 ✔

Flights between 7k and 12k feet

104 / 3.4 / 0.2 ✔

Flights between 6k and 7k feet

29 / 0.9 / 0.1 ✔

Flights between 5k and 6k feet

37 / 1.2 / 0.1 ✔

Flights between 4k and 5k feet

21 / 0.7 / 0.0 ✔

Flights between 3k and 4k feet

7 / 0.2 / 0.0 ✔

Flights below 3k feet

53 / 1.7 / 0.1 ✔

4 or more flights per hour

19 / 0.6 ✔

9 or more flights per hour

0 / 0.0 ✔

Departures between 1.5k and 15k feet

44 / 1.4 / 0.1 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

1 / 0.0

1 AM

2 AM

3 / 0.1

3 AM

5 / 0.2

4 AM

5 / 0.2

5 AM

16 / 0.5

6 AM

53 / 1.7

7 AM

108 / 3.5

8 AM to 9 PM

960 / 31.0 / 2.2

10 PM

4 / 0.1

11 PM

6 / 0.2

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

27 ✔

Minimum avg. distance in miles

0.53

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

7.0 / 2.0 / 0.4 ✔

Flight holding stack identified?

No

Altitude for all flights

23,321 ✔

Altitude of departures between 1.5k and 15k feet

8,530 ✔

Altitude of flights below 20k feet

11,528 ✔

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

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

4.13

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

3.75

Thursday @ 11:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

6.33

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

5.83

Friday @ 13:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

4.00

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

3.50

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

3.17

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

2.67

Sunday @ 13:00 - 3 time(s) in 4 weeks. Approx:2 flight events.

5.25

Saturday @ 11:00 - 2 time(s) in 4 weeks. Approx:3 flight events.