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

14/05/2025 16:25:19

UK Postcode

WINCHESTER-WEST , HAMPSHIRE , SO22 5FQ

Baseline geo-coordinates

51.076 , -1.34348

Survey type

31 days prior to: 13-May-2025 @22:34:43

Assessment band

INTERMITTENT

Assessment actual value

4.44

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

1,434 / 46.3 / 2.7 ✔

Flights above 26k feet.

916 / 29.5 / 1.7 ❌ (754)

Flights between 16k and 26k feet

228 / 7.4 / 0.4 ✔

Flights between 13k and 15k feet

32 / 1.0 / 0.1 ✔

Flights between 7k and 12k feet

148 / 4.8 / 0.3 ✔

Flights between 6k and 7k feet

44 / 1.4 / 0.1 ✔

Flights between 5k and 6k feet

17 / 0.5 / 0.0 ✔

Flights between 4k and 5k feet

12 / 0.4 / 0.0 ✔

Flights between 3k and 4k feet

15 / 0.5 / 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

82 / 2.6 / 0.2 ✔

Time and Sleep Analysis

For Assessment / Daily Avg. / Hourly Avg.

Between Midnight and 1am

11 / 0.4

Between 1am and 2am

6 / 0.2

Between 2am and 3am

4 / 0.1

Between 3am and 4am

6 / 0.2

Between 4am and 5am

5 / 0.2

Between 5am and 6am

16 / 0.5

Between 6am and 7am

89 / 2.9

Between 7am and 8am

101 / 3.3

Between 8am and 9pm

1,126 / 36.3 / 2.6

Between 10pm and 11pm

30 / 1.0

Between 11pm and Midnight

18 / 0.6

Other Noise Disturbance, Vibration and Emissions factors

Avg time in seconds an aircraft remained in the airspace bubble

17 ✔

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

31 ✔

Minimum avg. distance in miles

0.45

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

6.0 / 2.0 / 0.3 ✔

Flight holding stack identified?

No

Altitude for all flights

26,477 ✔

Altitude of departures between 1.5k and 15k feet

8,426 ❌ (8,468)

Altitude of flights below 20k feet

10,835 ✔

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

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

4.67

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

4.17

Fridays between 18:00 and 19:00 - 3 time(s) in 4 weeks. Approx:3 flight events.

3.83

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

2.50

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

5.00

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

3.25

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