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

08/04/2025 19:08:15

UK Postcode

WINCHESTER-WEST , HAMPSHIRE , SO22 5FQ

Baseline geo-coordinates

51.076 , -1.34348

Survey type

31 days prior to: 08-Apr-2025 @00:48:57

Assessment band

MINIMAL

Assessment actual value

3.94

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

1,304 / 42.1 / 2.5 ✔

Flights above 26k feet.

813 / 26.2 / 1.5 ❌ (746)

Flights between 16k and 26k feet

232 / 7.5 / 0.4 ✔

Flights between 13k and 15k feet

30 / 1.0 / 0.1 ✔

Flights between 7k and 12k feet

120 / 3.9 / 0.2 ✔

Flights between 6k and 7k feet

49 / 1.6 / 0.1 ✔

Flights between 5k and 6k feet

20 / 0.6 / 0.0 ✔

Flights between 4k and 5k feet

10 / 0.3 / 0.0 ✔

Flights between 3k and 4k feet

8 / 0.3 / 0.0 ✔

Flights below 3k feet

22 / 0.7 / 0.0 ✔

4 or more flights per hour

13 / 0.4 ✔

9 or more flights per hour

0 / 0.0 ✔

Departures between 1.5k and 15k feet

57 / 1.8 / 0.1 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

12 / 0.4

Between 1am and 2am

Between 2am and 3am

2 / 0.1

Between 3am and 4am

4 / 0.1

Between 4am and 5am

4 / 0.1

Between 5am and 6am

18 / 0.6

Between 6am and 7am

73 / 2.4

Between 7am and 8am

108 / 3.5

Between 8am and 9pm

1,033 / 33.3 / 2.4

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

19 ✔

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

37 ✔

Minimum avg. distance in miles

0.43

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

5.0 / 2.0 / 0.3 ✔

Flight holding stack identified?

No

Altitude for all flights

26,283 ✔

Altitude of departures between 1.5k and 15k feet

8,956 ✔

Altitude of flights below 20k feet

11,321 ✔

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

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

5.00

Fridays between 7:00 and 8:00- 3 time(s) in 4 weeks. Approx:3 flight events.

3.00

Tuesdays between 11:00 and 12:00 - 3 time(s) in 4 weeks. Approx:2 flight events.

2.50

Wednesdays between 7:00 and 8:00- 3 time(s) in 4 weeks. Approx:2 flight events.

7.00

Mondays between 17:00 and 18:00 - 2 time(s) in 4 weeks. Approx:5 flight events.

3.25

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

3.00

Wednesdays between 8:00 and 9:00- 2 time(s) in 4 weeks. Approx:2 flight events.

2.75

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

2.50

Wednesdays between 19:00 and 20:00 - 2 time(s) in 4 weeks. Approx:2 flight events.