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

10/02/2025 17:22:26

UK Postcode

WINCHESTER-SPARSHOLT , HAMPSHIRE , SO21 2QH

Baseline geo-coordinates

51.0776 , -1.3783

Survey type

31 days prior to: 31-Aug-2024 @23:49:01

Assessment band

MINIMAL

Assessment actual value

3.80

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

1,098 / 35.4 / 2.1 ✔

Flights above 26k feet.

631 / 20.4 / 1.2 ✔

Flights between 16k and 26k feet

172 / 5.5 / 0.3 ✔

Flights between 13k and 15k feet

9 / 0.3 / 0.0 ✔

Flights between 7k and 12k feet

170 / 5.5 / 0.3 ✔

Flights between 6k and 7k feet

46 / 1.5 / 0.1 ✔

Flights between 5k and 6k feet

12 / 0.4 / 0.0 ✔

Flights between 4k and 5k feet

13 / 0.4 / 0.0 ✔

Flights between 3k and 4k feet

12 / 0.4 / 0.0 ✔

Flights below 3k feet

33 / 1.1 / 0.1 ✔

4 or more flights per hour

7 / 0.2 ✔

9 or more flights per hour

0 / 0.0 ✔

Departures between 1.5k and 15k feet

166 / 5.4 / 0.3 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

18 / 0.6

Between 1am and 2am

7 / 0.2

Between 2am and 3am

1 / 0.0

Between 3am and 4am

3 / 0.1

Between 4am and 5am

14 / 0.5

Between 5am and 6am

32 / 1.0

Between 6am and 7am

54 / 1.7

Between 7am and 8am

68 / 2.2

Between 8am and 9pm

856 / 27.6 / 2.0

Between 10pm and 11pm

15 / 0.5

Between 11pm and Midnight

6 / 0.2

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

22 ✔

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

46 ❌ (44)

Minimum avg. distance in miles

0.50

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

6.0 / 3.0 / 0.3 ✔

Flight holding stack identified?

No

Altitude for all flights

24,490 ✔

Altitude of departures between 1.5k and 15k feet

7,865 ❌ (8,431)

Altitude of flights below 20k feet

9,574 ✔

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

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

4.25

Wednesdays between 16:00 and 17:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

2.63

Fridays between 16:00 and 17:00 - 4 time(s) in 4 weeks. Approx:2 flight events.

3.50

Thursdays between 20:00 and 21:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

3.17

Fridays between 17:00 and 18:00 - 3 time(s) in 4 weeks. Approx:2 flight events.

3.00

Tuesdays between 20:00 and 21:00 - 3 time(s) in 4 weeks. Approx:2 flight events.

5.25

Fridays between 15:00 and 16:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

5.00

Tuesdays between 16:00 and 17:00 - 2 time(s) in 4 weeks. Approx:3 flight events.

4.75

Fridays between 21:00 and 22:00 - 2 time(s) in 4 weeks. Approx:3 flight events.