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

17/06/2024 07:59:56

UK Postcode

TOWNHILL-PARK-SOUTHAMPTON , HAMPSHIRE , SO18 1BU

Baseline geo-coordinates

50.9299 , -1.36946

Survey type

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

Assessment band

REGULAR

Assessment actual value

7.14

Assessment description

Will encounter some night-time and day-time noise disturbances that are caused by high volumes of planes flying at at low altitude. Also expect a visual impact too.

Band range

Lower: 7.0 --> Upper: 12.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

3,657 / 118.0 / 6.9 ❌ (3,135)

Flights above 26k feet.

1,327 / 42.8 / 2.5 ❌ (634)

Flights between 16k and 26k feet

1,289 / 41.6 / 2.4 ❌ (309)

Flights between 13k and 15k feet

175 / 5.6 / 0.3 ❌ (135)

Flights between 7k and 12k feet

86 / 2.8 / 0.2 ✔

Flights between 6k and 7k feet

4 / 0.1 / 0.0 ✔

Flights between 5k and 6k feet

18 / 0.6 / 0.0 ✔

Flights between 4k and 5k feet

19 / 0.6 / 0.0 ✔

Flights between 3k and 4k feet

13 / 0.4 / 0.0 ✔

Flights below 3k feet

726 / 23.4 / 1.4 ❌ (650)

4 or more flights per hour

272 / 8.8 ❌ (203)

9 or more flights per hour

20 / 0.6 ✔

Departures between 1.5k and 15k feet

469 / 15.1 / 0.9 ❌ (380)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

0 AM

20 / 0.6

1 AM

8 / 0.3

2 AM

12 / 0.4

3 AM

8 / 0.3

4 AM

8 / 0.3

5 AM

16 / 0.5

6 AM

194 / 6.3

7 AM

307 / 9.9

8 AM to 9 PM

2,685 / 86.6 / 6.2

10 PM

55 / 1.8

11 PM

11 / 0.4

Other Noise Disturbance, Vibration and Emissions factors

Time in seconds an aircraft existed in the airspace bubble

20 ✔

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

40 ✔

Minimum avg. distance in miles

0.25

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

50.0 / 20.0 / 2.6 ✔

Flight holding stack identified?

No

Altitude for all flights

22,088 ✔

Altitude of departures between 1.5k and 15k feet

3,609 ❌ (7,809)

Altitude of flights below 20k feet

11,695 ✔

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

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

9.60

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

9.20

Friday @ 20:00 - 4 time(s) in 4 weeks. Approx:4 flight events.

9.10

Thursday @ 8:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

8.80

Thursday @ 19:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

8.60

Saturday @ 8:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

8.50

Saturday @ 10:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

7.60

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