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

21/06/2026 11:46:58

UK Postcode Area

WINCHESTER-WEST-3M, HAMPSHIRE, SO22 5FQ

Baseline geo-coordinates

51.0763 , -1.34328

Survey type

31 days prior to: 21-Jun-2026 @01:41:51

Assessment band

REGULAR

Assessment actual value

9.23

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

5,789 / 186.7 / 11.0 ❌ (3,159)

Flights above 26k feet.

3,010 / 97.1 / 5.7 ❌ (770)

Flights between 16k and 26k feet

926 / 29.9 / 1.8 ❌ (352)

Flights between 13k and 15k feet

213 / 6.9 / 0.4 ❌ (168)

Flights between 7k and 12k feet

599 / 19.3 / 1.1 ❌ (556)

Flights between 6k and 7k feet

340 / 11.0 / 0.6 ❌ (168)

Flights between 5k and 6k feet

123 / 4.0 / 0.2 ✔

Flights between 4k and 5k feet

44 / 1.4 / 0.1 ✔

Flights between 3k and 4k feet

51 / 1.6 / 0.1 ✔

Flights below 3k feet

483 / 15.6 / 0.9 ✔

4 or more flights per hour

383 / 12.4 ❌ (203)

9 or more flights per hour

65 / 2.1 ✔

Departures between 1.5k and 15k feet

485 / 15.6 / 0.9 ❌ (393)

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

54 / 1.7

Between 1am and 2am

52 / 1.7

Between 2am and 3am

23 / 0.7

Between 3am and 4am

20 / 0.6

Between 4am and 5am

47 / 1.5

Between 5am and 6am

73 / 2.4

Between 6am and 7am

286 / 9.2

Between 7am and 8am

398 / 12.8

Between 8am and 9pm

4,564 / 147.2 / 10.5

Between 10pm and 11pm

97 / 3.1

Between 11pm and Midnight

68 / 2.2

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

54 ❌ (30)

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

39 ✔

Minimum avg. distance in miles

1.41

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

71.0 / 28.0 / 3.7 ❌ (66)

Flight holding stack identified?

No

Altitude for all flights

22,874 ✔

Altitude of departures between 1.5k and 15k feet

8,532 ✔

Altitude of flights below 20k feet

9,144 ✔

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

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

12.80

Fridays between 14:00 and 15:00 - 4 time(s) in 4 weeks. Approx:7 flight events.

12.20

Thursdays between 8:00 and 9:00- 4 time(s) in 4 weeks. Approx:7 flight events.

11.50

Thursdays between 18:00 and 19:00 - 4 time(s) in 4 weeks. Approx:7 flight events.

11.30

Fridays between 16:00 and 17:00 - 4 time(s) in 4 weeks. Approx:7 flight events.

11.10

Thursdays between 7:00 and 8:00- 4 time(s) in 4 weeks. Approx:6 flight events.

10.90

Fridays between 20:00 and 21:00 - 4 time(s) in 4 weeks. Approx:7 flight events.

10.80

Thursdays between 17:00 and 18:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

10.60

Fridays between 17:00 and 18:00 - 4 time(s) in 4 weeks. Approx:6 flight events.

10.30

Fridays between 8:00 and 9:00- 4 time(s) in 4 weeks. Approx:6 flight events.