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

10/09/2025 11:31:44

UK Postcode

SPRINGVALE-WINCHESTER , HAMPSHIRE , SO21 1EU

Baseline geo-coordinates

51.0864 , -1.26759

Survey type

31 days prior to: 10-Sep-2025 @01:04:16

Assessment band

INTERMITTENT

Assessment actual value

6.62

Assessment description

Will encounter some day-time noise disturbances that are caused by the volumes of planes overflying Also expect a possible visual impact too.

Band range

Lower: 4.0 --> Upper: 7.0

Volumes, Height bands, and Intensity.

For Assessment / Daily Avg. / Hourly Avg.

Count of ALL flights

2,050 / 66.1 / 3.9 ✔

Flights above 26k feet.

783 / 25.3 / 1.5 ❌ (760)

Flights between 16k and 26k feet

361 / 11.6 / 0.7 ❌ (355)

Flights between 13k and 15k feet

131 / 4.2 / 0.2 ✔

Flights between 7k and 12k feet

189 / 6.1 / 0.4 ✔

Flights between 6k and 7k feet

81 / 2.6 / 0.2 ✔

Flights between 5k and 6k feet

35 / 1.1 / 0.1 ✔

Flights between 4k and 5k feet

12 / 0.4 / 0.0 ✔

Flights between 3k and 4k feet

99 / 3.2 / 0.2 ✔

Flights below 3k feet

359 / 11.6 / 0.7 ✔

4 or more flights per hour

141 / 4.5 ✔

9 or more flights per hour

2 / 0.1 ✔

Departures between 1.5k and 15k feet

131 / 4.2 / 0.2 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

37 / 1.2

Between 1am and 2am

28 / 0.9

Between 2am and 3am

12 / 0.4

Between 3am and 4am

11 / 0.4

Between 4am and 5am

13 / 0.4

Between 5am and 6am

18 / 0.6

Between 6am and 7am

90 / 2.9

Between 7am and 8am

195 / 6.3

Between 8am and 9pm

1,546 / 49.9 / 3.6

Between 10pm and 11pm

60 / 1.9

Between 11pm and Midnight

19 / 0.6

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

21 ✔

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

36 ✔

Minimum avg. distance in miles

0.51

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

30.0 / 11.0 / 1.6 ✔

Flight holding stack identified?

No

Altitude for all flights

18,696 ✔

Altitude of departures between 1.5k and 15k feet

11,343 ✔

Altitude of flights below 20k feet

8,269 ❌ (8,793)

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

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

7.80

Sundays between 16:00 and 17:00 - 4 time(s) in 4 weeks. Approx:5 flight events.

5.40

Sundays between 8:00 and 9:00- 4 time(s) in 4 weeks. Approx:3 flight events.

4.20

Sundays between 19:00 and 20:00 - 4 time(s) in 4 weeks. Approx:3 flight events.

7.38

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

7.25

Wednesdays between 8:00 and 9:00- 4 time(s) in 4 weeks. Approx:5 flight events.

6.88

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

6.75

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

6.63

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