Assessment ScoreCard – 31 Day

Assessment Scorecard headlines

All Assessments are based on an ambient background noise of between 30 and 40 dBs i.e. a quiet residential area. Typically the noise from an overflying aircraft is between 50-65 dBs. If your property is located near to a busy road i.e. 70-75 dBs, the noise impact from aircraft will be significantly reduced, whilst the road remains busy.

Note: Overflying aircraft noise typically has a duration of 30-50 seconds, the higher the plane the longer the duration. Whereas the average car, bus or HGV the duration is only a few seconds.

Date of survey

10/02/2025 19:31:20

UK Postcode Area

UP-SOMBORNE, HAMPSHIRE, SO20 6QZ

Baseline geo-coordinates

51.0892 , -1.4333

Survey type

31 days prior to: 31-Aug-2024 @20:56:22

Assessment band

MINIMAL

Assessment actual value

3.28

Assessment description

Might encounter some day-time irregular noise disturbances that are caused by the volumes of planes overflying.

Band range

Lower: 0.5 --> Upper: 4.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

580 / 18.7 / 1.1 ✔

Flights above 26k feet.

416 / 13.4 / 0.8 ✔

Flights between 16k and 26k feet

18 / 0.6 / 0.0 ✔

Flights between 13k and 15k feet

1 / 0.0 / 0.0 ✔

Flights between 7k and 12k feet

4 / 0.1 / 0.0 ✔

Flights between 6k and 7k feet

3 / 0.1 / 0.0 ✔

Flights between 5k and 6k feet

2 / 0.1 / 0.0 ✔

Flights between 4k and 5k feet

3 / 0.1 / 0.0 ✔

Flights between 3k and 4k feet

17 / 0.5 / 0.0 ✔

Flights below 3k feet

116 / 3.7 / 0.2 ✔

4 or more flights per hour

2 / 0.1 ✔

9 or more flights per hour

0 / 0.0 ✔

Departures between 1.5k and 15k feet

9 / 0.3 / 0.0 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

6 / 0.2

Between 1am and 2am

1 / 0.0

Between 2am and 3am

7 / 0.2

Between 3am and 4am

3 / 0.1

Between 4am and 5am

10 / 0.3

Between 5am and 6am

21 / 0.7

Between 6am and 7am

29 / 0.9

Between 7am and 8am

48 / 1.5

Between 8am and 9pm

411 / 13.3 / 0.9

Between 10pm and 11pm

9 / 0.3

Between 11pm and Midnight

9 / 0.3

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

27 ✔

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

41 ✔

Minimum avg. distance in miles

0.47

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

2.0 / 1.0 / 0.1 ✔

Flight holding stack identified?

No

Altitude for all flights

26,658 ✔

Altitude of departures between 1.5k and 15k feet

5,805 ❌ (8,519)

Altitude of flights below 20k feet

3,001 ❌ (8,791)

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

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

4.75

Sundays between 12:00 and 13:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

3.00

Mondays between 12:00 and 13:00 - 2 time(s) in 4 weeks. Approx:2 flight events.

8.00

Fridays between 15:00 and 16:00 - 1 time(s) in 4 weeks. Approx:4 flight events.

4.50

Saturdays between 13:00 and 14:00 - 1 time(s) in 4 weeks. Approx:3 flight events.

3.50

Saturdays between 17:00 and 18:00 - 1 time(s) in 4 weeks. Approx:2 flight events.

3.00

Thursdays between 13:00 and 14:00 - 1 time(s) in 4 weeks. Approx:2 flight events.