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

22/04/2024 11:02:56

UK Postcode

WINCHESTER-EAST , HAMPSHIRE , SO23 0JP

Baseline geo-coordinates

51.061 , -1.29789

Survey type

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

Assessment band

OCCASIONAL

Assessment actual value

6.38

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

2,125 / 68.5 / 4.0 ✔

Flights above 26k feet.

764 / 24.6 / 1.4 ❌ (634)

Flights between 16k and 26k feet

483 / 15.6 / 0.9 ❌ (309)

Flights between 13k and 15k feet

247 / 8.0 / 0.5 ❌ (135)

Flights between 7k and 12k feet

126 / 4.1 / 0.2 ✔

Flights between 6k and 7k feet

22 / 0.7 / 0.0 ✔

Flights between 5k and 6k feet

15 / 0.5 / 0.0 ✔

Flights between 4k and 5k feet

41 / 1.3 / 0.1 ✔

Flights between 3k and 4k feet

107 / 3.5 / 0.2 ✔

Flights below 3k feet

320 / 10.3 / 0.6 ✔

4 or more flights per hour

134 / 4.3 ✔

9 or more flights per hour

2 / 0.1 ✔

Departures between 1.5k and 15k feet

161 / 5.2 / 0.3 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

8 / 0.3

1 AM

6 / 0.2

2 AM

4 / 0.1

3 AM

3 / 0.1

4 AM

4 / 0.1

5 AM

15 / 0.5

6 AM

100 / 3.2

7 AM

164 / 5.3

8 AM to 9 PM

1,736 / 56.0 / 4.0

10 PM

46 / 1.5

11 PM

28 / 0.9

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

22 ✔

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

36 ✔

Minimum avg. distance in miles

0.32

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

31.0 / 11.0 / 1.6 ✔

Flight holding stack identified?

No

Altitude for all flights

19,025 ✔

Altitude of departures between 1.5k and 15k feet

12,266 ✔

Altitude of flights below 20k feet

10,042 ✔

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

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

6.30

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

5.10

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

3.50

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

8.25

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

8.13

Tuesday @ 12:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

7.38

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

7.00

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